{"id":174,"date":"2024-10-22T19:00:36","date_gmt":"2024-10-22T11:00:36","guid":{"rendered":"https:\/\/eve2333.top\/?p=174"},"modified":"2024-10-25T10:45:13","modified_gmt":"2024-10-25T02:45:13","slug":"v1%e5%88%b0v5","status":"publish","type":"post","link":"https:\/\/eve2333.top\/?p=174","title":{"rendered":"YOLOv1\u5230YOLOv5\u7684\u53d1\u5c55"},"content":{"rendered":"\r\n<h1 id=\"\u57fa\u7840\u6982\u5ff5\" class=\"wp-block-heading\">\u57fa\u7840\u6982\u5ff5<\/h1>\r\n\r\n\r\n\r\n<h1 class=\"wp-block-heading\">1.YOLO\u7b80\u4ecb<\/h1>\r\n\r\n\r\n\r\n<p>YOLO\uff08You Only Look Once\uff09\uff1a\u662f\u4e00\u79cd\u57fa\u4e8e\u6df1\u5ea6\u795e\u7ecf\u7f51\u7edc\u7684\u5bf9\u8c61\u8bc6\u522b\u548c\u5b9a\u4f4d\u7b97\u6cd5\uff0c\u5176\u6700\u5927\u7684\u7279\u70b9\u662f\u8fd0\u884c\u901f\u5ea6\u5f88\u5feb\uff0c\u53ef\u4ee5\u7528\u4e8e\u5b9e\u65f6\u7cfb\u7edf\u3002<\/p>\r\n\r\n\r\n\r\n<h1 id=\"_2-\u76ee\u6807\u68c0\u6d4b\u7b97\u6cd5\" class=\"wp-block-heading\">2.\u76ee\u6807\u68c0\u6d4b\u7b97\u6cd5<\/h1>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>RCNN<\/strong>\uff1a\u8be5\u7cfb\u5217\u7b97\u6cd5\u5b9e\u73b0\u4e3b\u8981\u4e3a\u4e24\u4e2a\u6b65\u9aa4\uff1a\u5148\u4ece\u56fe\u7247\u4e2d\u641c\u7d22\u51fa\u4e00\u4e9b\u53ef\u80fd\u5b58\u5728\u5bf9\u8c61\u7684\u5019\u9009\u533a\uff08Selective Search\uff09\uff0c\u5927\u69822000\u4e2a\u5de6\u53f3\uff1b\u7136\u540e\u5bf9\u6bcf\u4e2a\u5019\u9009\u533a\u8fdb\u884c\u5bf9\u8c61\u8bc6\u522b\u3002\u68c0\u6d4b\u7cbe\u5ea6\u8f83\u9ad8\uff0c\u4f46\u901f\u5ea6\u6162\u3002<\/li>\r\n\r\n\r\n\r\n<li><strong>YOLO<\/strong>\uff1a\u5c06\u7b5b\u9009\u5019\u9009\u533a\u57df\u4e0e\u76ee\u6807\u68c0\u6d4b\u5408\u4e8c\u4e3a\u4e00\uff0c\u5927\u5927\u52a0\u5feb\u76ee\u6807\u68c0\u6d4b\u901f\u5ea6\uff0c\u4f46\u51c6\u786e\u5ea6\u76f8\u5bf9\u8f83\u4f4e\u3002<\/li>\r\n\r\n\r\n\r\n<li>3.\u8bc4\u4ef7\u7b97\u6cd5<\/li>\r\n\r\n\r\n\r\n<li>3.1IOU<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-114\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729496311-\u5c4f\u5e55\u622a\u56fe-2024-10-21-153537.png\" alt=\"\" width=\"535\" height=\"292\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729496311-\u5c4f\u5e55\u622a\u56fe-2024-10-21-153537.png 981w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729496311-\u5c4f\u5e55\u622a\u56fe-2024-10-21-153537-300x164.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729496311-\u5c4f\u5e55\u622a\u56fe-2024-10-21-153537-768x420.png 768w\" sizes=\"auto, (max-width: 535px) 100vw, 535px\" \/><\/figure>\r\n\r\n\r\n\r\n<p><strong>IOU\uff08Intersection over Union\uff09<\/strong>\uff1a\u4ea4\u5e76\u6bd4\uff0c\u5019\u9009\u6846\uff08candidate bound\uff0c\u7d2b\u8272\u6846\uff09\u4e0e\u539f\u6807\u8bb0\u6846\uff08ground truth bound\uff0c\u7ea2\u8272\u6846\uff09\u7684\u4ea4\u53e0\u7387\uff0cIOU\u503c\u8d8a\u9ad8\uff0c\u8bf4\u660e\u7b97\u6cd5\u5bf9\u76ee\u6807\u7684\u9884\u6d4b\u7cbe\u5ea6\u8d8a\u9ad8\u3002<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Area of overlap<\/strong>\uff1a\u539f\u6807\u8bb0\u6846\u4e0e\u5019\u9009\u6846\u7684\u4ea4\u96c6\u9762\u79ef<\/li>\r\n\r\n\r\n\r\n<li><strong>Area of union<\/strong>\uff1a\u539f\u6807\u8bb0\u6846\u4e0e\u5019\u9009\u6846\u7684\u5e76\u96c6\u9762\u79ef<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 id=\"_32-\u7f6e\u4fe1\u5ea6\" class=\"wp-block-heading\">3.2\u7f6e\u4fe1\u5ea6<\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-115\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729496380-\u5c4f\u5e55\u622a\u56fe-2024-10-21-153931-1024x282.png\" alt=\"\" width=\"643\" height=\"177\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729496380-\u5c4f\u5e55\u622a\u56fe-2024-10-21-153931-1024x282.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729496380-\u5c4f\u5e55\u622a\u56fe-2024-10-21-153931-300x83.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729496380-\u5c4f\u5e55\u622a\u56fe-2024-10-21-153931-768x212.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729496380-\u5c4f\u5e55\u622a\u56fe-2024-10-21-153931.png 1071w\" sizes=\"auto, (max-width: 643px) 100vw, 643px\" \/><\/figure>\r\n\r\n\r\n\r\n<p><strong>confidence<\/strong>\uff1a\u9884\u6d4b\u6846\u91cc\u5b58\u5728\u68c0\u6d4b\u76ee\u6807\u7684\u53ef\u4fe1\u5ea6\uff0c\u5f53\u7f6e\u4fe1\u5ea6\u5927\u4e8e\u8bbe\u5b9a\u9608\u503c\u65f6\uff0c\u5c31\u8ba4\u4e3a\u8be5\u9884\u6d4b\u6846\u5185\u6709\u68c0\u6d4b\u76ee\u6807\uff0c\u00a0\u5373\u901a\u8fc7\u300c\u7f6e\u4fe1\u5ea6\u300d\u6765\u5b9e\u73b0\u5bf9\u300c\u5f85\u68c0\u6d4b\u76ee\u6807\u300d\u4e0e\u300c\u80cc\u666f\u300d\u7684\u5212\u5206\u3002<\/p>\r\n\r\n\r\n\r\n<p>confidence=Pr(Object)\u2217IOUpredtruthconfidence=Pr(Object)\u2217IOUpredtruth\u200b<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Pr(Object)Pr(Object)\uff0c\u5019\u9009\u6846\u91cc\u5b58\u5728\u7269\u4f53\u7684\u6982\u7387\uff1b<\/li>\r\n\r\n\r\n\r\n<li>IOUpredtruthIOUpredtruth\u200b\uff0c\u300c\u9884\u6d4b\u6846\u300d\u4e0e\u539f\u6807\u8bb0\u6846\u7684\u4ea4\u53e0\u7387\u3002\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u9884\u6d4b\u6846\uff1a<\/strong>\u00a0\u4ece\u4e00\u5806\u300c\u5019\u9009\u6846\u300d\u4e2d\uff0c\u9009\u62e9\u4e86\u4e00\u4e2a\u6548\u679c\u6700\u597d\u7684\u5f53\u4f5c\u300c\u9884\u6d4b\u6846\u300d\uff0c\u4e00\u822c\u53d6\u6700\u503cIOUpredtruth=max\u2061(IOU0,IOU1,\u22ef\u2009,IOUB)IOUpredtruth\u200b=max(IOU0\u200b,IOU1\u200b,\u22ef,IOUB\u200b)<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 id=\"_33-\u4e8c\u5206\u7c7b\u6307\u6807\" class=\"wp-block-heading\">3.3\u4e8c\u5206\u7c7b\u6307\u6807<\/h2>\r\n\r\n\r\n\r\n<p>\u5728\u300c\u4e8c\u5206\u7c7b\u300d\u4efb\u52a1\u4e2d\uff0c\u5bf9\u6837\u672c\u7684\u63cf\u8ff0\uff1a<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Position<\/strong>\uff1a\u6b63\u4f8b\uff0c\u4e8c\u5206\u7c7b\u4e2d\u7684\u4e00\u7c7b\u6837\u672c\uff0c\u4e00\u822c\u662f\u60f3\u8981\u7684<\/li>\r\n\r\n\r\n\r\n<li><strong>Negative<\/strong>\uff1a\u8d1f\u4f8b\uff0c\u4e8c\u5206\u7c7b\u4e2d\u53e6\u4e00\u7c7b\u6837\u672c\uff0c\u4e00\u822c\u662f\u4e0d\u60f3\u8981\u7684<\/li>\r\n\r\n\r\n\r\n<li><strong>TP\uff08True Position\uff09<\/strong>\uff1a\u5728\u62ff\u51fa\u6837\u672c\u4e2d\uff0c\u6b63\u786e\u8bc6\u522b\u4e3a\u6b63\u4f8b<\/li>\r\n\r\n\r\n\r\n<li><strong>FP\uff08False Position\uff09<\/strong>\u00a0\uff1a\u5728\u62ff\u51fa\u6837\u672c\u4e2d\uff0c\u9519\u8bef\u8bc6\u522b\u4e3a\u6b63\u4f8b\uff0c\u5373\u672c\u8eab\u662f\u8d1f\u4f8b\uff08\u8bef\u5224\uff09<\/li>\r\n\r\n\r\n\r\n<li><strong>TN\uff08True Negative\uff09<\/strong>\u00a0\uff1a\u672a\u62ff\u51fa\u6837\u672c\u4e2d\uff0c\u6b63\u786e\u5f53\u8d1f\u4f8b\u820d\u5f03<\/li>\r\n\r\n\r\n\r\n<li><strong>FP\uff08False Negative\uff09<\/strong>\u00a0\uff1a\u672a\u62ff\u51fa\u6837\u672c\u4e2d\uff0c\u9519\u8bef\u5f53\u8d1f\u4f8b\u820d\u5f03\uff0c\u5373\u672c\u8eab\u662f\u6b63\u4f8b\uff08\u9057\u6f0f\uff09<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>\u4e8c\u5206\u7c7b\u7ed3\u679c\u7684\u8bc4\u5224\u6307\u6807\uff1a<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u7cbe\u5ea6\uff08Accuracy\uff09<\/strong>\uff1a\u6b63\u786e\u5206\u7c7b\u6837\u672c\u5360\u603b\u6837\u672c\u7684\u6bd4\u5217Accuracy=TP+TNTP+FP+TN+FNAccuracy=TP+FP+TN+FNTP+TN\u200b<\/li>\r\n\r\n\r\n\r\n<li><strong>\u51c6\u786e\u5ea6\uff08Precision\uff09<\/strong>\uff1a\u8bc6\u522b\u6b63\u786e\u7684\u6837\u672c\u5360\u88ab\u62ff\u51fa\u6837\u672c\u7684\u6bd4\u5217Precision=TPTP+FPPrecision=TP+FPTP\u200b<\/li>\r\n\r\n\r\n\r\n<li><strong>\u67e5\u51c6\u5ea6\uff08Recall\uff09<\/strong>\uff1a\u8bc6\u522b\u6b63\u786e\u7684\u6837\u672c\u5360\u76ee\u6807\u6837\u672c\u603b\u6570\u7684\u6bd4\u5217Recall=TPTP+FNRecall=TP+FNTP\u200b<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 id=\"_34-ap\" class=\"wp-block-heading\">3.4AP<\/h2>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\"><strong>3.4.1\u95ee\u9898<\/strong><\/h3>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">[!tip] \u7531\u4e8e Precision \u4e0e Recall \u53ea\u9002\u7528\u4e8e\u300c\u4e8c\u5206\u7c7b\u95ee\u9898\u300d\u3002\u5f53\u5b58\u5728\u591a\u6837\u672c\u5206\u7c7b\u65f6\uff0c\u5bf9\u6bcf\u4e00\u7c7b\u6837\u672c\u5355\u72ec\u8003\u8651\u5176\u300c\u4e8c\u5206\u7c7b\u95ee\u9898\u300d\uff0c\u5373\u76ee\u6807\u6837\u672c\u4e0e\u5176\u4ed6\u6837\u672c\u7684\u5206\u7c7b\u95ee\u9898\u3002 <\/blockquote>\r\n\r\n\r\n\r\n<p>\u5f53\u786e\u8ba4\u7684\u6837\u672c\u8d8a\u5c11\uff0c\u51fa\u9519\u7684\u98ce\u9669\u4e5f\u5c31\u8d8a\u5c0f\uff1b\u5f53\u9009\u62e9\u51fa\u7684\u6837\u672c\u91cf\u8d8a\u5927\uff0c\u5f97\u5230\u5168\u90e8\u76ee\u6807\u6837\u672c\u7684\u53ef\u80fd\u6027\u8d8a\u5927\u3002\u56e0\u6b64 Precision \u4e0e Recall \u662f\u4e00\u5ea6\u77db\u76fe\u7684\u5173\u7cfb<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Precision \u8f83\u5927\u65f6\uff0cRecall \u8f83\u5c0f\uff1a\u5f53\u8981\u5206\u8fa8 10 \u4e2a\u82f9\u679c\u65f6\uff0c\u6211\u53ea\u62ff\u51fa\u4e00\u4e2a\u82f9\u679c\uff0c\u90a3\u4e48 Precision \u5c31\u662f\u00a0<code>100 %<\/code>\uff0c\u800c Recall \u786e\u662f\u00a0<code>10 %<\/code><\/li>\r\n\r\n\r\n\r\n<li>Precision \u8f83\u5927\u65f6\uff0cRecall \u8f83\u5c0f\uff1a\u82e5\u9009\u62e9\u51fa 100 \u4e2a\u6c34\u679c\uff0c10 \u4e2a\u82f9\u679c\u6211\u4eec\u90fd\u62ff\u51fa\u6765\u4e86\uff0c\u4f46\u662f\u8fd8\u6709 90 \u4e2a\u5176\u4ed6\u6c34\u679c\u3002Precision \u5c31\u662f\u00a0<code>10 %<\/code>\uff0c\u800c Recall \u662f\u00a0<code>100 %<\/code><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\"><strong>3.4.2<\/strong><strong>Precision-Recall\u66f2\u7ebf<\/strong><\/h3>\r\n\r\n\r\n\r\n<p>\u5047\u8bbe\u6a21\u578b\u7684\u4efb\u52a1\u4e3a\u4ece\u56fe\u7247\u4e2d\uff0c\u68c0\u6d4b\u51fa\u4e09\u7c7b\u7269\u4f53\uff1a(1,2,3)\u3002\u300c\u4e00\u5f20\u56fe\u7247\u300d\u7684\u6a21\u578b\u9884\u6d4b\u7ed3\u679c\u5982\u4e0b\u6240\u793a<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-131\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729585969-\u5c4f\u5e55\u622a\u56fe-2024-10-22-162423.png\" alt=\"\" width=\"147\" height=\"165\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729585969-\u5c4f\u5e55\u622a\u56fe-2024-10-22-162423.png 382w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729585969-\u5c4f\u5e55\u622a\u56fe-2024-10-22-162423-267x300.png 267w\" sizes=\"auto, (max-width: 147px) 100vw, 147px\" \/><\/figure>\r\n\r\n\r\n\r\n<p><strong>\u73b0\u5728\u5bf9\u6bcf\u4e00\u7c7b\u522b\u5206\u522b\u7ed8\u5236 Precision-Recall\u66f2\u7ebf<\/strong>\uff1a<\/p>\r\n\r\n\r\n\r\n<ol class=\"wp-block-list\">\r\n<li><strong>\u6bcf\u4e2a\u9884\u6d4b\u7684 box \u4e0e\u5176\u5206\u7c7b\u5bf9\u5e94\u7684\u6240\u6709 Ground True box \u8fdb\u884c IOU \u8ba1\u7b97\uff0c\u5e76\u9009\u62e9\u51fa\u6700\u5927\u7684 IOU \u4f5c\u4e3a\u8f93\u51fa\u7ed3\u679c\u3002<\/strong>\u00a0\u8ba4\u4e3a\u5f53\u524d\u9884\u6d4b box \u5c31\u662f IOU \u6700\u5927\u7684\u8fd9\u4e2a Ground True box \u7684\u9884\u6d4b\u7ed3\u679c\u3002\uff08\u82e5\u591a\u4e2a\u9884\u6d4bbox \u4e0e\u540c\u4e00\u4e2a Ground True box \u76f8\u5bf9\u5e94\uff0c\u5219\u53ea\u8bb0\u5f55\u4e00\u4e2a\uff09<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-132\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729586000-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163304.png\" alt=\"\" width=\"227\" height=\"191\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586000-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163304.png 516w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586000-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163304-300x252.png 300w\" sizes=\"auto, (max-width: 227px) 100vw, 227px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>2.\u5c06\u00a0<code>max_iou<\/code>\u00a0\u4e0e\u7ed9\u5b9a\u9608\u503c\u00a0<code>thresh = 0.5<\/code>\u00a0\u8fdb\u884c\u6bd4\u8f83\uff0c\u5927\u4e8e\u9608\u503c\u5c31\u6807\u8bb0\u00a0<code>1<\/code><\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-133\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729586004-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163308.png\" alt=\"\" width=\"262\" height=\"180\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586004-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163308.png 647w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586004-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163308-300x206.png 300w\" sizes=\"auto, (max-width: 262px) 100vw, 262px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>3.\u6570\u636e\u6839\u636e\u300c\u5206\u7c7b\u7f6e\u4fe1\u5ea6\u00a0<code>class_conf<\/code>\u300d \u8fdb\u884c\u6392\u5e8f<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-139\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729586407-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163707.png\" alt=\"\" width=\"256\" height=\"171\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586407-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163707.png 642w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586407-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163707-300x201.png 300w\" sizes=\"auto, (max-width: 256px) 100vw, 256px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>4.\u53d6\u51fa\u5206\u7c7b 1<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-138\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729586269-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163711.png\" alt=\"\" width=\"287\" height=\"109\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586269-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163711.png 652w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586269-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163711-300x114.png 300w\" sizes=\"auto, (max-width: 287px) 100vw, 287px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>5.\u5047\u8bbe\u5728\u5f53\u524d\u56fe\u7247\u4e2d\uff0c\u5b58\u5728\u00a0<code>3<\/code>\u00a0\u4e2a 1 \u7c7b\u76ee\u6807\uff0c\u8ba1\u7b97\u5176 Precision \u4e0e Recall\u3002\u6839\u636e\u4e0a\u9762\u7684\u7ed3\u679c\uff0c\u5047\u8bbe\u53ea\u627e\u51fa 1 \u4e2a 1 \u7c7b\u76ee\u6807\u65f6\uff1a<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-137\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729586268-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163716.png\" alt=\"\" width=\"286\" height=\"57\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586268-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163716.png 506w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586268-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163716-300x60.png 300w\" sizes=\"auto, (max-width: 286px) 100vw, 286px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>\u5047\u8bbe\u53ea\u627e\u51fa 2 \u4e2a 1 \u7c7b\u76ee\u6807\u65f6<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-136\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729586268-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163718.png\" alt=\"\" width=\"265\" height=\"69\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586268-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163718.png 491w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586268-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163718-300x78.png 300w\" sizes=\"auto, (max-width: 265px) 100vw, 265px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>\u5047\u8bbe\u53ea\u627e\u51fa 3 \u4e2a 1 \u7c7b\u76ee\u6807\u65f6<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-135\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729586268-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163721.png\" alt=\"\" width=\"249\" height=\"118\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586268-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163721.png 493w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586268-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163721-300x142.png 300w\" sizes=\"auto, (max-width: 249px) 100vw, 249px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>\u4ee5\u6b64\u7c7b\u63a8\uff0c\u627e\u51fa\u5168\u90e8\u65f6<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-134\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729586267-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163724.png\" alt=\"\" width=\"261\" height=\"128\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586267-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163724.png 469w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586267-\u5c4f\u5e55\u622a\u56fe-2024-10-22-163724-300x147.png 300w\" sizes=\"auto, (max-width: 261px) 100vw, 261px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>6.\u6839\u636e\u4e0a\u8ff0 Precision \u4e0e Recall \u5e8f\u5217\u7ed8\u5236\u51fa\u7684\u66f2\u7ebf\uff0c\u5c31\u662f 1 \u7c7b\u522b\u76ee\u6807\u5bf9\u5e94\u7684Precision-Recall\u66f2\u7ebf\uff0c\u91cd\u590d\u4e0a\u8ff0\u6b65\u9aa4\uff0c\u5c31\u662f\u7ed8\u5236\u51fa 2, 3 \u7c7b\u522b\u7684\u66f2\u7ebf\u3002 \u6839\u636ePrecision-Recall\u66f2\u7ebf\u5c31\u80fd\u8ba1\u7b97 AP \u503c\u4e86\u3002<\/p>\r\n\r\n\r\n\r\n<p><strong>PS:<\/strong><\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<ul class=\"wp-block-list\">\r\n<li>\u6839\u636e\u4e0a\u8ff0\u9608\u503c\u00a0<code>thresh_50 = 0.5<\/code>\u00a0\u7684\u4e0d\u540c\u53d6\u503c\uff0c\u5c31\u80fd\u8ba1\u7b97\u5f97\u5230\u4e0d\u540c\u7684 AP \u7c7b\u578b\uff0c\u4f8b\u5982\u00a0<code>thresh = 0.5<\/code>\u00a0\u5c31\u662f AP50\uff1b<code>thresh = 0.75<\/code>\u00a0\u5c31\u662f AP75\u3002\u8ba1\u7b97\u591a\u4e2a AP \u7c7b\u578b\uff0c\u7136\u540e\u53d6\u5747\u503c\uff0c\u5c31\u662f \u300cmAP\u300d\u3002\u4f8b\u5982mAP=AP50+AP75+AP80+\u22efnmAP=nAP50+AP75+AP80+\u22ef\u200b<\/li>\r\n\r\n\r\n\r\n<li>\u4e0a\u8ff0\u8ba1\u7b97\u6d41\u7a0b\u53ea\u662f\u5904\u7406\u4e86\u300c\u4e00\u5f20\u56fe\u7247\u300d\u7684\u9884\u6d4b\u7ed3\u679c\u3002\u5bf9\u4e8e\u591a\u5f20\u56fe\u7247\u7684\u5904\u7406\uff0c\u5219\u662f\u5bf9\u6bcf\u5f20\u56fe\u7247\u5206\u522b\u8fdb\u884c\u6b65\u9aa41\u3001\u6b65\u9aa42\uff0c\u6700\u540e\u5c06\u6240\u6709\u7684\u56fe\u7247\u7ed3\u679c\u5168\u90e8\u5806\u53e0\u8d77\u6765\uff0c\u8fdb\u884c\u540e\u7eed\u6b65\u9aa4\u5904\u7406\u3002<\/li>\r\n<\/ul>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<h3 id=\"_343-ap-\u8ba1\u7b97\" class=\"wp-block-heading\">3.4.3AP\u8ba1\u7b97<\/h3>\r\n\r\n\r\n\r\n<p><strong>AP\uff08Average Precision\uff09<\/strong>\uff1aPrecision-Recall\u66f2\u7ebf\u4e0b\u65b9\u7684\u9762\u79ef\u3002\u7ed3\u5408 Precision \u4e0e Recall \uff0c\u66f4\u52a0\u5168\u9762\u7684\u5bf9\u6a21\u578b\u7684\u597d\u574f\u8fdb\u884c\u8bc4\u4ef7\u3002<\/p>\r\n\r\n\r\n\r\n<ol class=\"wp-block-list\">\r\n<li><strong>\u7ed8\u5236\u5b8c\u6574\u7684 Precision-Recall\u66f2\u7ebf<\/strong>\uff1a\u5c06 Precision \u4e0e Recall \u7ed8\u5236\u6210\u66f2\u7ebf\u3002 <img loading=\"lazy\" decoding=\"async\" class=\"wp-image-142\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729586956-\u5c4f\u5e55\u622a\u56fe-2024-10-22-164852.png\" alt=\"\" width=\"508\" height=\"386\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586956-\u5c4f\u5e55\u622a\u56fe-2024-10-22-164852.png 980w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586956-\u5c4f\u5e55\u622a\u56fe-2024-10-22-164852-300x228.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586956-\u5c4f\u5e55\u622a\u56fe-2024-10-22-164852-768x584.png 768w\" sizes=\"auto, (max-width: 508px) 100vw, 508px\" \/><\/li>\r\n\r\n\r\n\r\n<li>\u67e5\u627e precision \u7a81\u7136\u53d8\u5927\u7684\u70b9 <img loading=\"lazy\" decoding=\"async\" class=\"wp-image-141\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729586955-\u5c4f\u5e55\u622a\u56fe-2024-10-22-164856.png\" alt=\"\" width=\"551\" height=\"413\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586955-\u5c4f\u5e55\u622a\u56fe-2024-10-22-164856.png 973w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586955-\u5c4f\u5e55\u622a\u56fe-2024-10-22-164856-300x225.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586955-\u5c4f\u5e55\u622a\u56fe-2024-10-22-164856-768x575.png 768w\" sizes=\"auto, (max-width: 551px) 100vw, 551px\" \/><\/li>\r\n\r\n\r\n\r\n<li>\u5229\u7528\u8fd9\u4e2a\u7a81\u53d8\u70b9\u6765\u4ee3\u8868\u8fd9\u4e2a\u533a\u95f4\u5185\u7684 Precision <img loading=\"lazy\" decoding=\"async\" class=\"wp-image-140\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729586955-\u5c4f\u5e55\u622a\u56fe-2024-10-22-164900.png\" alt=\"\" width=\"542\" height=\"407\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586955-\u5c4f\u5e55\u622a\u56fe-2024-10-22-164900.png 974w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586955-\u5c4f\u5e55\u622a\u56fe-2024-10-22-164900-300x225.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729586955-\u5c4f\u5e55\u622a\u56fe-2024-10-22-164900-768x577.png 768w\" sizes=\"auto, (max-width: 542px) 100vw, 542px\" \/><\/li>\r\n\r\n\r\n\r\n<li>\u6700\u540e\u8ba1\u7b97\u5f69\u8272\u77e9\u5f62\u533a\u57df\u7684\u9762\u79ef\uff0c\u8be5\u503c\u5c31\u662f AP<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n<h1 id=\"yolo-v1\" class=\"wp-block-heading\">YOLOV1<\/h1>\r\n\r\n\r\n\r\n<h1 class=\"wp-block-heading\">1.\u7f51\u683c\u6a21\u578b<\/h1>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-143\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729587095-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165124-1024x429.png\" alt=\"\" width=\"592\" height=\"248\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587095-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165124-1024x429.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587095-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165124-300x126.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587095-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165124-768x322.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587095-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165124.png 1031w\" sizes=\"auto, (max-width: 592px) 100vw, 592px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>\u5bf9\u4e8e\u7b2c\u4e00\u7248 YOLO \u7684\u7f51\u7edc\u6a21\u578b\u5c31\u4e24\u4e2a\u90e8\u5206\uff1a\u00a0\u5377\u79ef\u5c42\u3001\u5168\u8fde\u63a5\u5c42\u00a0\u3002<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u8f93\u5165\uff1a<\/strong>\u00a0\u5c3a\u5bf8\u4e3a\u00a0<code>448x448x3<\/code>\u00a0\u7684\u56fe\u7247\uff0c\u00a0\u56fe\u7247\u5c3a\u5bf8\u5b9a\u6b7b<\/li>\r\n\r\n\r\n\r\n<li><strong>\u8f93\u51fa\uff1a<\/strong>\u00a0\u56fe\u7247\u4e2d\u88ab\u68c0\u6d4b\u76ee\u6807\u7684\u4f4d\u7f6e\uff08\u77e9\u5f62\u6846\u5750\u6807\uff09\u4e0e\u88ab\u68c0\u6d4b\u7269\u4f53\u7684\u5206\u7c7b\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>\u200b<img loading=\"lazy\" decoding=\"async\" class=\"wp-image-144\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729587424-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165151.png\" alt=\"\" width=\"641\" height=\"278\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587424-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165151.png 1044w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587424-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165151-300x130.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587424-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165151-1024x444.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587424-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165151-768x333.png 768w\" sizes=\"auto, (max-width: 641px) 100vw, 641px\" \/><\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">2.\u76ee\u6807\u68c0\u6d4b\u539f\u7406<\/h2>\r\n\r\n\r\n\r\n<ol class=\"wp-block-list\">\r\n<li>\u5c06\u8f93\u5165\u56fe\u7247\u901a\u8fc7\u00a0<code>7x7<\/code>\u00a0\u7f51\u683c\uff0c\u5212\u5206\u4e3a\u00a0<code>49<\/code>\u00a0\u4e2a\u5355\u5143\u683c<\/li>\r\n\r\n\r\n\r\n<li>\u6bcf\u4e2a\u5355\u5143\u683c\u8d1f\u8d23\u4e00\u4e2a\u68c0\u6d4b\u76ee\u6807\uff1a\u5b58\u50a8\u68c0\u6d4b\u76ee\u6807\u5916\u63a5\u77e9\u5f62\u7684\u300c\u4e2d\u5fc3\u70b9\u5750\u6807\u300d\u3001\u957f\u5bbd\uff1b\u5b58\u50a8\u68c0\u6d4b\u76ee\u6807\u7684\u7c7b\u578b\u3002\u00a0\u5373\u5f53\u68c0\u6d4b\u76ee\u6807\u7684\u5916\u63a5\u77e9\u5f62\u300c\u4e2d\u5fc3\u70b9\u5750\u6807\u300d\u4f4d\u4e8e\u8be5\u5355\u5143\u683c\u5185\u65f6\uff0c\u5c31\u8ba9\u8be5\u5355\u5143\u683c\u5168\u6743\u8d1f\u8d23\u50a8\u5b58\u8fd9\u4e2a\u68c0\u6d4b\u76ee\u6807\u7684\u4fe1\u606f\u3002<\/li>\r\n\r\n\r\n\r\n<li>\u6bcf\u4e2a\u5355\u5143\u683c\u6301\u6709<code>2<\/code>\u4e2a\u5019\u9009\u77e9\u5f62\u6846\uff0c\u4f1a\u901a\u8fc7\u7f6e\u4fe1\u5ea6\u9009\u62e9\u4e00\u4e2a\u6700\u597d\u7684\u5f53\u4f5c\u9884\u6d4b\u7ed3\u679c\u8f93\u51fa<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-147\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729587672-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165852.png\" alt=\"\" width=\"295\" height=\"297\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587672-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165852.png 973w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587672-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165852-298x300.png 298w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587672-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165852-150x150.png 150w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587672-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165852-768x772.png 768w\" sizes=\"auto, (max-width: 295px) 100vw, 295px\" \/><\/figure>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-146\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729587671-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165858.png\" alt=\"\" width=\"293\" height=\"292\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587671-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165858.png 662w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587671-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165858-300x300.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587671-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165858-150x150.png 150w\" sizes=\"auto, (max-width: 293px) 100vw, 293px\" \/><\/figure>\r\n\r\n\r\n\r\n<h1 id=\"_3-\u6a21\u578b\u8f93\u51fa\" class=\"wp-block-heading\">3.\u6a21\u578b\u8f93\u51fa<\/h1>\r\n\r\n\r\n\r\n<p>V1 \u7248\u672c\u7684\u8f93\u51fa\u7ed3\u679c\u4e3a\u00a0<code>7x7x30<\/code>\u00a0\u7684\u4e00\u4e2a\u5411\u91cf\uff0c\u5bf9\u8be5\u5411\u91cf\u8fdb\u884c\u7ef4\u5ea6\u8f6c\u6362\u5f97\u5230<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-145\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729587669-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165902.png\" alt=\"\" width=\"534\" height=\"295\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587669-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165902.png 960w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587669-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165902-300x166.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587669-\u5c4f\u5e55\u622a\u56fe-2024-10-22-165902-768x424.png 768w\" sizes=\"auto, (max-width: 534px) 100vw, 534px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>\u5176\u4e2d\u00a0<code>7x7<\/code>\u00a0\u8868\u793a\u5229\u7528\u00a0<code>7x7<\/code>\u00a0\u7684\u7f51\u683c\uff0c\u5c06\u8f93\u5165\u56fe\u7247\u5212\u5206\u4e3a\u00a0<code>49<\/code>\u00a0\u4e2a\u5355\u5143\u683c\uff1b<code>30<\/code>\u00a0\u8868\u793a\u5bf9\u6bcf\u4e2a\u5355\u5143\u683c\u9884\u6d4b\u7ed3\u679c\u7684\u63cf\u8ff0\uff1a\u4e24\u4e2a\u76ee\u6807\u4f4d\u7f6e\u5019\u8865\u6846\u3001\u7f6e\u4fe1\u5ea6\u3001\u76ee\u6807\u7684\u5206\u7c7b<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-148\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729587761-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170236-1024x190.png\" alt=\"\" width=\"587\" height=\"109\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587761-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170236-1024x190.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587761-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170236-300x56.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587761-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170236-768x142.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587761-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170236.png 1057w\" sizes=\"auto, (max-width: 587px) 100vw, 587px\" \/><\/figure>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>bounding box 1 \uff1a\u7b2c\u4e00\u4e2a\u5019\u8865\u6846\u7684\u53c2\u6570\uff0c\u5916\u63a5\u77e9\u5f62\u4e2d\u5fc3\u5750\u6807\u00a0(x1,y1)(x1\u200b,y1\u200b)\u00a0\uff1b\u957f\u5bbd\u00a0(w1,h1)(w1\u200b,h1\u200b)<\/li>\r\n\r\n\r\n\r\n<li>confidence 1 \uff1a\u7b2c\u4e00\u4e2a\u5019\u8865\u6846\u662f\u5f85\u68c0\u6d4b\u76ee\u6807\u7684\u7f6e\u4fe1\u5ea6<\/li>\r\n\r\n\r\n\r\n<li>bounding box 2 \uff1a\u7b2c\u4e8c\u4e2a\u5019\u8865\u6846\u7684\u53c2\u6570\uff0c\u5916\u63a5\u77e9\u5f62\u4e2d\u5fc3\u5750\u6807\u00a0(x1,y1)(x1\u200b,y1\u200b)\u00a0\uff1b\u957f\u5bbd\u00a0(w1,h1)(w1\u200b,h1\u200b)<\/li>\r\n\r\n\r\n\r\n<li>confidence 2 \uff1a\u7b2c\u4e8c\u4e2a\u5019\u8865\u6846\u662f\u5f85\u68c0\u6d4b\u76ee\u6807\u7684\u7f6e\u4fe1\u5ea6<\/li>\r\n\r\n\r\n\r\n<li>\u5206\u7c7b\uff1a\u68c0\u6d4b\u76ee\u6807\u4e3a\u00a0<code>20<\/code>\u00a0\u4e2a\u5206\u7c7b\u7684\u6982\u7387<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>\u5176\u4e2d\uff0c\u5bf9\u4e8e\u4e2d\u5fc3\u5750\u6807\u00a0(x,y)(x,y)\u00a0\u3001\u957f\u5bbd\u00a0(w,h)(w,h)\u00a0\u503c\u7684\u5b58\u50a8\u662f\u4e00\u4e2a\u767e\u5206\u6bd4\u3002<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u4e2d\u5fc3\u5750\u6807\u00a0(x,y)(x,y)\u00a0\uff1a\u76f8\u5bf9\u5355\u5143\u683c\u957f\u5bbd\u7684\u6bd4\u503c<\/li>\r\n\r\n\r\n\r\n<li>\u957f\u5bbd\u00a0(w,h)(w,h)\uff1a\u76f8\u5bf9\u4e8e\u8f93\u5165\u56fe\u7247\u957f\u5bbd\u7684\u6bd4\u503c<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h1 id=\"_4-\u635f\u5931\u51fd\u6570\" class=\"wp-block-heading\">4.\u635f\u5931\u51fd\u6570<\/h1>\r\n\r\n\r\n\r\n<h2 id=\"_41-\u5b9a\u4e49\" class=\"wp-block-heading\">4.1\u5b9a\u4e49<\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-149\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729587873-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170424.png\" alt=\"\" width=\"575\" height=\"385\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587873-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170424.png 1014w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587873-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170424-300x201.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587873-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170424-768x514.png 768w\" sizes=\"auto, (max-width: 575px) 100vw, 575px\" \/><\/figure>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>ii\uff1a\u8868\u793a\u5bf9<code>SxS<\/code>\u7684\u5355\u5143\u683c\u7684\u7d22\u5f15\uff0c\u5c06\u4e8c\u7ef4\u6570\u7ec4\u5c06\u7ef4\u4e3a\u4e00\u7ef4\u6570\u7ec4\u8fdb\u884c\u5904\u7406<\/li>\r\n\r\n\r\n\r\n<li>jj\uff1a\u5bf9<code>B<\/code>\u4e2a\u5019\u8865\u77e9\u5f62\u7684\u7d22\u5f15<\/li>\r\n\r\n\r\n\r\n<li>1iobj1iobj\u200b\uff1a\u6807\u8bb0\u5355\u5143\u683c\u4e2d\u662f\u5426\u5b58\u5728\u68c0\u6d4b\u76ee\u6807\uff0c\u5b58\u5728\u503c\u4e3a<code>1<\/code>\uff0c\u4e0d\u5b58\u5728\u503c\u4e3a<code>0<\/code>\u3002<\/li>\r\n\r\n\r\n\r\n<li>1ijobj1ijobj\u200b\uff1a\u6807\u8bb0\u5355\u5143\u683c\u7684\u300c\u5019\u8865\u6846\u300d\u4e2d\u662f\u5426\u5b58\u5728\u68c0\u6d4b\u76ee\u6807\uff0c\u5b58\u5728\u503c\u4e3a<code>1<\/code>\uff0c\u4e0d\u5b58\u5728\u503c\u4e3a<code>0<\/code><\/li>\r\n\r\n\r\n\r\n<li>1ijnoobj1ijnoobj\u200b\uff1a\u6807\u8bb0\u5355\u5143\u683c\u7684\u300c\u5019\u8865\u6846\u300d\u4e2d\u662f\u5426\u5b58\u5728\u68c0\u6d4b\u76ee\u6807\uff0c\u5b58\u5728\u503c\u4e3a<code>0<\/code>\uff0c\u4e0d\u5b58\u5728\u503c\u4e3a<code>1<\/code><\/li>\r\n\r\n\r\n\r\n<li>C^C^\uff1a\u671f\u671b\u8f93\u51fa\u7684\u7f6e\u4fe1\u5ea6\r\n<ul class=\"wp-block-list\">\r\n<li>\u5b58\u5728\u76ee\u6807\u65f6\uff1aC^=Pr(Object)\u2217IOUpredtruthC^=Pr(Object)\u2217IOUpredtruth\u200b\u90fd\u8ba4\u4e3a\u662f\u5b58\u5728\u76ee\u6807\u4e86\uff0c\u90a3\u4e48\u00a0Pr(Object)=1Pr(Object)=1<\/li>\r\n\r\n\r\n\r\n<li>\u4e0d\u5b58\u5728\u76ee\u6807\u65f6\uff1aC^=0C^=0<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">4.2\u4f4d\u7f6e\u9884\u6d4b<\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-150\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729587963-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170554.png\" alt=\"\" width=\"186\" height=\"226\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587963-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170554.png 518w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729587963-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170554-247x300.png 247w\" sizes=\"auto, (max-width: 186px) 100vw, 186px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>\u5f53\u9884\u6d4b\u5916\u63a5\u6846\u4e0e\u76ee\u6807\u5916\u63a5\u6846\u7684\u5bbd\u5ea6\u3001\u9ad8\u5ea6\u7684\u5dee\u503c\u4e00\u6837\u65f6\uff0c\u5bf9\u4e8e\u8f83\u5927\u7684\u7269\u4f53\u800c\u8a00\u76f8\u5bf9\u8bef\u5dee\u5c0f\uff0c\u800c\u5bf9\u4e8e\u8f83\u5c0f\u7269\u4f53\u800c\u8a00\u76f8\u5bf9\u8bef\u5dee\u8f83\u5927\u3002\u56e0\u6b64\u4e3a\u4e86\u8ba9\u635f\u5931\u51fd\u6570\u5bf9\u5c0f\u7269\u4f53\u7684\u5916\u63a5\u77e9\u5f62\u7684\u5bbd\u5ea6\u3001\u9ad8\u5ea6\u66f4\u654f\u611f\u4e00\u4e9b\uff0c\u5728 YOLO V1 \u4e2d\u91c7\u7528\u4e86\u00a0<strong>\u300c\u6839\u53f7\u300d: \u81ea\u53d8\u91cf\u5728[0,1]\u53d6\u503c\u65f6\uff0c\u6839\u53f7\u7684\u659c\u7387\u53d8\u5316\u6bd4\u76f4\u7ebf\u8981\u5927\u3002<\/strong><\/p>\r\n\r\n\r\n\r\n<h1 id=\"_5-\u6a21\u578b\u9884\u6d4b\" class=\"wp-block-heading\">5.\u6a21\u578b\u9884\u6d4b<\/h1>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">5.1\u6a21\u578b\u601d\u8def<\/h2>\r\n\r\n\r\n\r\n<p>\u8bad\u7ec3\u597d\u7684 YOLO \u7f51\u7edc\uff0c\u8f93\u5165\u4e00\u5f20\u56fe\u7247\uff0c\u5c06\u8f93\u51fa\u4e00\u4e2a\u00a0<code>7x7x30<\/code>\u00a0\u7684\u5f20\u91cf\uff08tensor\uff09\u6765\u8868\u793a\u56fe\u7247\u4e2d\u6240\u6709\u7f51\u683c\u5305\u542b\u7684\u5bf9\u8c61\uff08\u6982\u7387\uff09\u4ee5\u53ca\u8be5\u5bf9\u8c61\u53ef\u80fd\u7684<code>2<\/code>\u4e2a\u4f4d\u7f6e\uff08bounding box\uff09\u548c\u53ef\u4fe1\u7a0b\u5ea6\uff08\u7f6e\u4fe1\u5ea6\uff09\u3002\u6bcf\u4e2a\u5355\u5143\u683c\u6709\u4e24\u4e2a bounding box \uff0c\u4e00\u5171\u6709\u00a0<code>7x7<\/code>\u00a0\u4e2a\u5355\u5143\u683c\uff0c\u73b0\u5728\u5c06\u6240\u6709\u7684\u00a0<code>7x7x2=98<\/code>\u00a0\u4e2a bounding box \u7ed8\u5236\u51fa\u6765<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-151\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729588134-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170619.png\" alt=\"\" width=\"290\" height=\"292\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588134-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170619.png 672w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588134-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170619-298x300.png 298w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588134-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170619-150x150.png 150w\" sizes=\"auto, (max-width: 290px) 100vw, 290px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>\u53ef\u4ee5\u770b\u89c1\u56fe\u4e0a\u5230\u5904\u90fd\u662f bounding box\uff0c\u73b0\u5728\u5c31\u9700\u8981\u4ece\u8fd9\u4e9b bounding box \u4e2d\uff0c\u7b5b\u9009\u51fa\u80fd\u6b63\u786e\u8868\u793a\u76ee\u6807\u7684 bounding box\u3002<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-152\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729588155-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170624-1024x446.png\" alt=\"\" width=\"560\" height=\"244\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588155-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170624-1024x446.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588155-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170624-300x131.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588155-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170624-768x335.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588155-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170624.png 1028w\" sizes=\"auto, (max-width: 560px) 100vw, 560px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>\u4e3a\u4e86\u5b9e\u73b0\u8be5\u76ee\u7684\uff0c YOLO \u91c7\u7528 NMS\uff08Non-maximal suppression\uff0c\u975e\u6781\u5927\u503c\u6291\u5236\uff09\u7b97\u6cd5\u3002<\/p>\r\n\r\n\r\n\r\n<h2 id=\"_52-\u7b5b\u9009\u6b65\u9aa4\" class=\"wp-block-heading\">5.2\u7b5b\u9009\u6b65\u9aa4<\/h2>\r\n\r\n\r\n\r\n<ol class=\"wp-block-list\">\r\n<li>\u8ba1\u7b97\u6bcf\u4e2a bounding box \u5bf9\u5e94\u5206\u7c7b\u7684\u5f97\u5206Scoreij=Pi(C)\u2217CjScoreij\u200b=Pi\u200b(C)\u2217Cj\u200b\u5176\u4e2d\u00a0CjCj\u200b\u00a0\u662f bounding box \u7f6e\u4fe1\u5ea6\uff1bPi(C)Pi\u200b(C)\u00a0\u4e0d\u540c\u5206\u7c7b\u5bf9\u5e94\u7684\u6982\u7387\u3002\u5c06\u8ba1\u7b97\u7ed3\u679c\u5199\u6210\u77e9\u9635\u5f62\u5f0f <img loading=\"lazy\" decoding=\"async\" class=\"wp-image-153\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729588238-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170629.png\" alt=\"\" width=\"383\" height=\"298\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588238-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170629.png 978w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588238-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170629-300x233.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588238-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170629-768x597.png 768w\" sizes=\"auto, (max-width: 383px) 100vw, 383px\" \/><\/li>\r\n\r\n\r\n\r\n<li>\u5bf9 Score \u77e9\u9635\u91cc\u9762\u7684\u6240\u6709\u5f97\u5206\u8fdb\u884c\u68c0\u6d4b\uff0c\u5c06\u5f97\u5206\u5c0f\u4e8e\u9608\u503c\u7684\u5168\u90e8\u8bbe\u7f6e\u4e3a\u96f6 <img loading=\"lazy\" decoding=\"async\" class=\"wp-image-154\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729588378-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170633.png\" alt=\"\" width=\"445\" height=\"261\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588378-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170633.png 988w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588378-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170633-300x176.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588378-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170633-768x450.png 768w\" sizes=\"auto, (max-width: 445px) 100vw, 445px\" \/><\/li>\r\n\r\n\r\n\r\n<li>\u7531\u4e8e\u8fd9\u91cc\u5b58\u5728\u00a0<code>20<\/code>\u00a0\u4e2a\u5206\u7c7b\uff0c\u56e0\u6b64\u9700\u8981\u5bf9\u4e0d\u540c\u7684\u5206\u7c7b\u8fdb\u884c\u5206\u5f00\u5904\u7406\u3002\u5728\u5f97\u5206\u77e9\u9635\u4e2d\uff0c\u6bcf\u4e00\u884c\u5c31\u5bf9\u5e94\u4e00\u4e2a\u5206\u7c7b\u3002<\/li>\r\n\r\n\r\n\r\n<li>\u5bf9\u4e00\u884c\u5206\u7c7b\u7684 Score \u8fdb\u884c\u6392\u5e8f\uff0c\u5e76\u5bf9\u6392\u5e8f\u597d\u7684\u7c7b\u578b\u8fdb\u884c\u6781\u5927\u503c\u6291\u5236\u5904\u7406\u3002 <img loading=\"lazy\" decoding=\"async\" class=\"wp-image-155\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729588395-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170643.png\" alt=\"\" width=\"350\" height=\"236\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588395-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170643.png 983w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588395-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170643-300x202.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588395-\u5c4f\u5e55\u622a\u56fe-2024-10-22-170643-768x517.png 768w\" sizes=\"auto, (max-width: 350px) 100vw, 350px\" \/><\/li>\r\n\r\n\r\n\r\n<li>\u91cd\u590d\u6b65\u9aa44\uff0c\u5b8c\u6210\u5bf9\u6240\u6709\u5206\u7c7b\u7684\u5904\u7406\u3002<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">5.3. \u6781\u5927\u503c\u6291\u5236<\/h2>\r\n\r\n\r\n\r\n<ol class=\"wp-block-list\">\r\n<li><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-156\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729588481-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171434.png\" alt=\"\" width=\"527\" height=\"260\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588481-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171434.png 986w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588481-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171434-300x148.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588481-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171434-768x379.png 768w\" sizes=\"auto, (max-width: 527px) 100vw, 527px\" \/><\/li>\r\n<li>\u4e4b\u540e Score \u4e0d\u4e3a\u96f6\u7684 bounding box \u90fd\u8981\u4e0e\u300c\u57fa\u51c6\u6846\u300d\u8ba1\u7b97 IOU\u3002\u7136\u540e\u5bf9\u8fd9\u4e9b bounding box \u8fdb\u884c\u8fc7\u6ee4IOU&gt;0.5IOU&gt;0.5\r\n<ul class=\"wp-block-list\">\r\n<li>\u4e0d\u7b49\u5f0f\u6210\u7acb\uff1a\u8ba4\u4e3a\u5f53\u524d\u7684 bounging box \u4e0e\u300c\u57fa\u51c6\u6846\u300d\u90fd\u662f\u6807\u8bb0\u7684\u540c\u4e00\u76ee\u6807\uff0c\u91cd\u590d\u4e86\uff0c\u56e0\u6b64\u5c31\u9700\u8981\u5c06\u5f53\u524d bounding box \u7684 Score \u7f6e\u4e3a 0<\/li>\r\n\r\n\r\n\r\n<li>\u4e0d\u7b49\u5f0f\u4e0d\u6210\u7acb\uff1a\u8ba4\u4e3a\u5f53\u524d\u7684 bounging box \u4e0e\u300c\u57fa\u51c6\u6846\u300d\u6807\u8bb0\u7684\u662f\u4e0d\u540c\u76ee\u6807\uff0c\u5f53\u524d bounding box \u9700\u8981\u4fdd\u7559 <img loading=\"lazy\" decoding=\"async\" class=\"wp-image-157\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729588513-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171427.png\" alt=\"\" width=\"521\" height=\"263\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588513-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171427.png 970w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588513-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171427-300x152.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588513-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171427-768x388.png 768w\" sizes=\"auto, (max-width: 521px) 100vw, 521px\" \/><\/li>\r\n<\/ul>\r\n<\/li>\r\n\r\n\r\n\r\n<li>\u91cd\u590d\u6b65\u9aa4 2 \uff0c\u6d88\u9664\u4e0e\u5f53\u524d\u300c\u57fa\u51c6\u6846\u300d\u91cd\u5408\u7684 bounding box \u3002<\/li>\r\n\r\n\r\n\r\n<li>\u91cd\u590d\u4e0a\u8ff0\u6b65\u9aa4\uff0c\u76f4\u5230\u6240\u6709\u7684\u91cd\u590d bounding box \u90fd\u6d88\u9664\u3002<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n<h1 id=\"yolo-v2\" class=\"wp-block-heading\">YOLOV2<\/h1>\r\n\r\n\r\n\r\n<h1 id=\"_1-\u6a21\u578b\u6539\u8fdb\" class=\"wp-block-heading\">1.\u6a21\u578b\u6539\u8fdb<\/h1>\r\n\r\n\r\n\r\n<h2 id=\"_11-\u5377\u79ef\u5316\" class=\"wp-block-heading\">1.1\u5377\u79ef\u5316<\/h2>\r\n<h2 class=\"wp-block-heading\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-158\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729588642-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171701.png\" alt=\"\" width=\"497\" height=\"484\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588642-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171701.png 1029w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588642-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171701-300x292.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588642-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171701-1024x997.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588642-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171701-768x748.png 768w\" sizes=\"auto, (max-width: 497px) 100vw, 497px\" \/><\/h2>\r\n\r\n\r\n\r\n<p>\u5728 V1 \u4e2d\uff0c\u6700\u540e\u7684\u8f93\u51fa\u7ed3\u679c\u662f\u9760\u300c\u5168\u8fde\u63a5\u5c42\u300d\u5f97\u5230\u7684\uff0c\u8fd9\u4e5f\u5c31\u9650\u5236\u4e86\u8f93\u5165\u56fe\u7247\u7684\u5c3a\u5bf8\u3002\u56e0\u6b64\u5728 V2 \u5c06\u6240\u6709\u7684\u5168\u8fde\u63a5\u5c42\u8f6c\u4e3a\u4e86\u5377\u79ef\u5c42\uff0c\u6784\u9020\u4e86\u65b0\u7684\u7f51\u7edc\u7ed3\u679c DarkNet19\uff0c\u5176\u4e2d\u8fd8\u5229\u7528 1x1 \u5377\u79ef\u5bf9\u6a21\u578b\u8fdb\u884c\u4f18\u5316\u3002<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">1.2batch normalization<\/h2>\r\n\r\n\r\n\r\n<p>\u5728 DarkNet19 \u7f51\u7edc\u4e2d\uff0c\u5bf9\u4e8e\u5377\u79ef\u5c42\u52a0\u5165\u4e86\u00a0batch normalization\uff0c\u5e76\u5220\u9664\u4e86\u00a0dropout\u3002<\/p>\r\n\r\n\r\n\r\n<p>\u7531\u4e8e DarkNet19 \u505a\u4e86\u00a0<code>5<\/code>\u00a0\u6b21\u6c60\u5316\u4e14\u5377\u79ef\u5747\u8fdb\u884c\u4e86padding\uff0c\u6240\u4ee5\u8f93\u5165\u56fe\u7247\u5c06\u4f1a\u88ab\u7f29\u653e\u00a025=3225=32\u00a0\u500d\uff0c\u5373\u00a0<code>448x448<\/code>\u00a0\u7684\u8f93\u5165\uff0c\u8f93\u51fa\u7ed3\u679c\u5e94\u5f53\u662f\u00a0<code>448\/32=14<\/code>\uff0c\u4f46\u662f<code>14x14<\/code>\u7684\u7ed3\u679c\u6ca1\u6709\u7279\u5b9a\u7684\u4e2d\u5fc3\u70b9\uff0c\u4e3a\u4e86\u5236\u9020\u4e00\u4e2a\u4e2d\u5fc3\u70b9\uff0c\u6a21\u578b\u7684\u8f93\u5165\u56fe\u7247\u5c3a\u5bf8\u5c31\u66f4\u6539\u4e3a\u4e86<code>416x416<\/code>\uff0c\u8f93\u51fa\u7ed3\u679c\u5c31\u53d8\u4e3a\u4e86<code>13x13<\/code>\u3002<\/p>\r\n\r\n\r\n\r\n<h2 id=\"_13-fine-grained-features\" class=\"wp-block-heading\">1.3Fine-Grained Features<\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-159\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729588692-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171744-1024x604.png\" alt=\"\" width=\"459\" height=\"271\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588692-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171744-1024x604.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588692-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171744-300x177.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588692-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171744-768x453.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588692-\u5c4f\u5e55\u622a\u56fe-2024-10-22-171744.png 1034w\" sizes=\"auto, (max-width: 459px) 100vw, 459px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>\u200b\u5728 DarkNet19 \u6a21\u578b\u4e2d\uff0c\u5b58\u5728\u4e00\u4e2a PassThrough Layer \u7684\u64cd\u4f5c\uff0c\u8be5\u64cd\u4f5c\u5c31\u662f\u5c06\u4e4b\u524d\u9636\u6bb5\u7684\u5377\u79ef\u5c42\u7ed3\u679c\u4e0e\u6a21\u578b\u8f93\u51fa\u7ed3\u679c\u8fdb\u884c\u76f8\u52a0\u3002\u6839\u636e\u00a0\u611f\u53d7\u91ce\u00a0\u53ef\u77e5\uff0c\u8d8a\u9760\u524d\u7684\u7f51\u7edc\u5c42\u5bf9\u7ec6\u8282\u7684\u628a\u63e1\u8d8a\u597d\uff0c\u8d8a\u9760\u540e\u7684\u7f51\u7edc\u66f4\u6ce8\u91cd\u4e8e\u76ee\u6807\u6574\u4f53\uff0c\u4e3a\u4e86\u4f7f\u5f97\u8f93\u51fa\u7ed3\u679c\u5bf9\u5c0f\u7269\u4f53\u6709\u66f4\u597d\u7684\u628a\u63e1\uff0c\u5c31\u53ef\u4ee5\u5229\u7528 PassThrough Layer \u6765\u63d0\u5347\u7ed3\u679c\u7279\u5f81\u56fe\u5bf9\u5c0f\u7269\u4f53\u7684\u654f\u611f\u5ea6\u3002<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">1.4\u56fe\u7247\u8f93\u5165<\/h2>\r\n\r\n\r\n\r\n<p>\u7531\u4e8e\u5386\u53f2\u539f\u56e0\uff0cImageNet\u5206\u7c7b\u6a21\u578b\u57fa\u672c\u91c7\u7528\u5927\u5c0f\u4e3a\u00a0<code>224x224<\/code>\u00a0\u7684\u56fe\u7247\u4f5c\u4e3a\u8f93\u5165\uff0c\u6240\u4ee5 YOLO V1 \u6a21\u578b\u8bad\u7ec3\u4f7f\u7528\u7684\u8f93\u5165\u56fe\u7247\u5927\u5c0f\u5176\u5b9e\u4e3a\u00a0<code>224x224<\/code>\uff0c\u5728\u6a21\u578b\u9884\u6d4b\u65f6\uff0c\u53c8\u4f7f\u7528\u7684\u662f\u00a0<code>448x448<\/code>\u00a0\u7684\u56fe\u7247\u4f5c\u4e3a\u8f93\u5165\uff0c\u8fd9\u6837\u5c31\u5bfc\u81f4\u6a21\u578b\u7684\u8bad\u7ec3\u548c\u6a21\u578b\u7684\u9884\u6d4b\uff0c\u8f93\u5165\u5176\u5b9e\u662f\u6709\u5dee\u5f02\u7684\u3002\u4e3a\u4e86\u5f25\u8865\u8fd9\u4e2a\u5dee\u5f02\uff0c\u6a21\u578b\u8bad\u7ec3\u7684\u6700\u540e\u51e0\u4e2a epoch \u91c7\u7528\u00a0<code>448x448<\/code>\u00a0\u7684\u56fe\u7247\u8fdb\u884c\u8bad\u7ec3\u3002<\/p>\r\n\r\n\r\n\r\n<h1 id=\"_2-anchor-box\" class=\"wp-block-heading\">2.Anchor box<\/h1>\r\n\r\n\r\n\r\n<p><strong>YOLO V1 \u7684 bounding box \u7f3a\u9677<\/strong>\uff1a<\/p>\r\n\r\n\r\n\r\n<ol class=\"wp-block-list\">\r\n<li>\u4e00\u4e2a\u5355\u5143\u683c\u53ea\u80fd\u8d1f\u8d23\u4e00\u4e2a\u76ee\u6807\u68c0\u6d4b\u7684\u7ed3\u679c\uff0c\u5982\u679c\u8be5\u5355\u5143\u683c\u662f\u591a\u4e2a\u76ee\u6807\u7684\u4e2d\u5fc3\u70b9\u533a\u57df\u65f6\uff0cV1 \u7248\u672c\u5c06\u4e0d\u80fd\u8bc6\u522b\u3002<\/li>\r\n\r\n\r\n\r\n<li>V1 \u4e2d\uff0c\u5bf9\u4e8e bounding box \u7684\u9884\u6d4b\u7ed3\u679c\u5e76\u672a\u52a0\u9650\u5236\uff0c\u8fd9\u5c31\u4f1a\u5bfc\u81f4 bounding box \u7684\u4e2d\u5fc3\u70b9\u53ef\u80fd\u4f1a\u8dd1\u5230\u5176\u4ed6\u5355\u5143\u683c\u5185<\/li>\r\n\r\n\r\n\r\n<li>bounging box \u7684\u5bbd\u5ea6\u4e0e\u9ad8\u5ea6\u662f\u9760\u6a21\u578b\u81ea\u5df1\u5b66\u4e60\u7684\uff0c\u8fd9\u5c31\u53ef\u80fd\u8d70\u5f88\u591a\u5f2f\u8def\u3002<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n<h2 id=\"_21-anchor\" class=\"wp-block-heading\">2.1Anchor<\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-160\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729588869-\u5c4f\u5e55\u622a\u56fe-2024-10-22-172021.png\" alt=\"\" width=\"527\" height=\"269\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588869-\u5c4f\u5e55\u622a\u56fe-2024-10-22-172021.png 1000w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588869-\u5c4f\u5e55\u622a\u56fe-2024-10-22-172021-300x153.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588869-\u5c4f\u5e55\u622a\u56fe-2024-10-22-172021-768x392.png 768w\" sizes=\"auto, (max-width: 527px) 100vw, 527px\" \/><\/figure>\r\n\r\n\r\n\r\n<ol class=\"wp-block-list\">\r\n<li>\u6a21\u578b\u8bad\u7ec3\u5f00\u59cb\u524d\uff0c\u4eba\u4e3a\u4e3a\u6bcf\u4e2a\u5355\u5143\u683c\u9884\u5b9a\u4e49\u51e0\u4e2a\u4e0d\u540c\u5927\u5c0f\u7684 Anchor Box\uff0c\u8fd9\u6837\u4ece\u8bad\u7ec3\u5f00\u59cb\uff0c\u6bcf\u4e2a\u5355\u5143\u683c\u7684bounding box\u5c31\u6709\u4e86\u5404\u81ea\u9884\u5148\u7684\u68c0\u6d4b\u76ee\u6807\uff0c\u4f8b\u5982\u7626\u957f\u7684 bounging box \u5c31\u9002\u5408\u627e\u4eba\uff0c\u77ee\u80d6\u7684 bounging box \u5c31\u9002\u5408\u627e\u8f66\u7b49\u3002<\/li>\r\n\r\n\r\n\r\n<li>\u6a21\u578b\u8bad\u7ec3\u5c31\u662f\u8c03\u6574\u8fd9\u4e9b\u9884\u5b9a\u4e49\u7684bounding box \u7684\u4e2d\u5fc3\u70b9\u4f4d\u7f6e\u4e0e\u957f\u5bbd\u6bd4\u5217\u3002<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n<h2 id=\"_22-box-\u6570\u636e\u7ed3\u6784\" class=\"wp-block-heading\">2.2Box\u6570\u636e\u7ed3\u6784<\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-161\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729588923-\u5c4f\u5e55\u622a\u56fe-2024-10-22-172031-1024x576.png\" alt=\"\" width=\"514\" height=\"289\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588923-\u5c4f\u5e55\u622a\u56fe-2024-10-22-172031-1024x576.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588923-\u5c4f\u5e55\u622a\u56fe-2024-10-22-172031-300x169.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588923-\u5c4f\u5e55\u622a\u56fe-2024-10-22-172031-768x432.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588923-\u5c4f\u5e55\u622a\u56fe-2024-10-22-172031.png 1028w\" sizes=\"auto, (max-width: 514px) 100vw, 514px\" \/><\/figure>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-162\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729588935-\u5c4f\u5e55\u622a\u56fe-2024-10-22-172038.png\" alt=\"\" width=\"476\" height=\"255\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588935-\u5c4f\u5e55\u622a\u56fe-2024-10-22-172038.png 999w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588935-\u5c4f\u5e55\u622a\u56fe-2024-10-22-172038-300x161.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729588935-\u5c4f\u5e55\u622a\u56fe-2024-10-22-172038-768x411.png 768w\" sizes=\"auto, (max-width: 476px) 100vw, 476px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>\u5728\u5f15\u5165 Anchor box \u540e\uff0c YOLO V2 \u5bf9\u4e8e\u4e00\u4e2a bounging box \u7684\u6570\u636e\u7ed3\u6784\u4e3a\uff1a<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u4e2d\u5fc3\u70b9\u5750\u6807\u00a0(x,y)(x,y)\uff0c\u76f8\u5bf9\u4e8e\u5355\u5143\u683c\u5bbd\u5ea6\u7684\u6bd4\u5217\u503c<\/li>\r\n\r\n\r\n\r\n<li>\u76f8\u5bf9\u4e8e Anchor box \u5bbd\u9ad8\u7684\u504f\u79fb\u91cf\u00a0(w,h)(w,h)<\/li>\r\n\r\n\r\n\r\n<li>\u5f53\u524d bounging box \u5b58\u5728\u68c0\u6d4b\u76ee\u6807\u7684\u7f6e\u4fe1\u5ea6\u00a0ConfidenceConfidence<\/li>\r\n\r\n\r\n\r\n<li>\u68c0\u6d4b\u76ee\u6807\u5bf9\u5e94\u5404\u4e2a\u7c7b\u578b\u7684\u6982\u7387\u00a0pipi\u200b<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>\u4e00\u4e2a\u5355\u5143\u683c\u80fd\u68c0\u6d4b\u591a\u5c11\u76ee\u6807\uff0c\u5c31\u8f93\u51fa\u591a\u5c11\u4e2a\u4e0a\u8ff0 Box \u6570\u636e\u7ed3\u6784\u3002<\/p>\r\n\r\n\r\n\r\n<h2 id=\"_23-box-\u89e3\u6790\" class=\"wp-block-heading\">2.3Box\u89e3\u6790<\/h2>\r\n\r\n\r\n\r\n<p>\u5047\u8bbe\u4e00\u4e2a bounding box \u7684\u8f93\u51fa\u7ed3\u679c\u4e3a[tx,ty,th,tw,to][tx\u200b,ty\u200b,th\u200b,tw\u200b,to\u200b]<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>bounding box \u7684\u4e2d\u5fc3\u70b9\u5750\u6807<\/strong>bx=\u03c3(tx)+Cxby=\u03c3(ty)+Cybx\u200b=\u03c3(tx\u200b)+Cx\u200bby\u200b=\u03c3(ty\u200b)+Cy\u200b\u200b(Cx,Cy)(Cx\u200b,Cy\u200b)\u00a0\u4e3a\u5355\u5143\u683c\u5728\u8f93\u51fa\u7f51\u683c\u4e2d\uff0c\u5de6\u4e0a\u89d2\u7684\u5750\u6807\uff1b\u00a0\u03c3()\u03c3()\u00a0\u4e3a sigmod \u51fd\u6570\uff0c\u4e3a\u4e86\u5c06\u4e2d\u5fc3\u70b9\u9650\u5236\u5728\u5f53\u524d\u5355\u5143\u683c\u5185\u00a0\u3002<\/li>\r\n\r\n\r\n\r\n<li><strong>bounding box \u7684\u5bbd\u5ea6<\/strong>bw=Pwetwbh=Phethbw\u200b=Pw\u200betw\u200bbh\u200b=Ph\u200beth\u200b\u200b(Pw,Ph)(Pw\u200b,Ph\u200b)\u00a0\u4e3a\u8be5 bounding box \u5bf9\u5e94\u7684 Anchor box \u7684\u5927\u5c0f\uff1be()e()\u00a0\u7684\u76ee\u7684\u548c YOLO V1 \u4e00\u6837\uff0c\u53ea\u662f\u5c06\u539f\u6765\u7684\u00a0()()\u200b\u00a0\u66ff\u6362\u6210\u4e86\u00a0ln\u2061()ln()\u3002<\/li>\r\n\r\n\r\n\r\n<li><strong>bounding box \u7684\u7f6e\u4fe1\u5ea6<\/strong>Confidence=\u03c3(to)Confidence=\u03c3(to\u200b)<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 id=\"_24-\u786e\u5b9a-anchor\" class=\"wp-block-heading\">2.4\u786e\u5b9aAnchor<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>K\u7c7b\u805a\uff1a<\/strong>\r\n<ol class=\"wp-block-list\">\r\n<li>\u6536\u96c6\u6240\u6709\u8bad\u7ec3\u6837\u672c\u56fe\u7247\u4e2d\u68c0\u6d4b\u76ee\u6807\u7684\u671f\u671b bounding box\uff0c\u00a0\u53ea\u8981\u5bbd\u5ea6\u3001\u9ad8\u5ea6\uff1b\u4e0d\u8981\u4e2d\u5fc3\u70b9\u5750\u6807<\/li>\r\n\r\n\r\n\r\n<li>\u5229\u7528 K-means \u7c7b\u805a\u7b97\u6cd5\u5c06\u4e0a\u8ff0\u6837\u672c\u6846\u5212\u5206\u4e3a k \u7c7b\uff0c\u8ddd\u79bb\u8ba1\u7b97\u516c\u5f0f\u4e3adcenter=1\u2212IOU(center,box)dcenter\u200b=1\u2212IOU(center,box)<\/li>\r\n\r\n\r\n\r\n<li>\u9009\u62e9\u6bcf\u4e2a\u7c7b\u522b\u7684\u4e2d\u5fc3 bounding box \u4f5c\u4e3a Anchor box \uff0c\u4e00\u5171 k \u4e2a<\/li>\r\n<\/ol>\r\n<\/li>\r\n\r\n\r\n\r\n<li><strong>k \u7684\u786e\u5b9a\uff1a<\/strong>\u00a0\u4f5c\u8005\u5bf9 VOC \u4e0e COCO \u6570\u636e\u96c6\uff0c\u8fdb\u884c\u6d4b\u8bd5\u540e\uff0c\u9009\u62e9\u4e86\u00a0k=5k=5<\/li>\r\n\r\n\r\n\r\n<li><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-164\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729589648-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173402.png\" alt=\"\" width=\"343\" height=\"348\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589648-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173402.png 985w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589648-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173402-296x300.png 296w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589648-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173402-768x779.png 768w\" sizes=\"auto, (max-width: 343px) 100vw, 343px\" \/><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">3.\u635f\u5931\u51fd\u6570<\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"537\" class=\"wp-image-163\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729589485-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173114-1024x537.png\" alt=\"\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589485-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173114-1024x537.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589485-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173114-300x157.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589485-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173114-768x403.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589485-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173114.png 1029w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\r\n\r\n\r\n\r\n<h1 id=\"yolo-spp\" class=\"wp-block-heading\">YOLOSPP<\/h1>\r\n\r\n\r\n\r\n<h2 id=\"_1-spp\u4ecb\u7ecd\" class=\"wp-block-heading\">1.\u4ecb\u7ecd<\/h2>\r\n\r\n\r\n\r\n<p>YOLO SPP \u5c5e\u4e8e\u662f YOLO V3 \u7684 PRO \u6539\u8fdb\u7248\u672c\u3002\u5728\u539f\u59cb yolo v3 \u7684\u57fa\u7840\u4e0a\u589e\u52a0\u4e86 Mosaic \u6570\u636e\u589e\u5f3a\u3001spp\u7f51\u7edc\u5c42\u3001\u4f4d\u7f6e\u635f\u5931\u51fd\u6570\u6539\u8fdb\u3002<\/p>\r\n\r\n\r\n\r\n<h2 id=\"_2-mosaic-\u56fe\u50cf\u589e\u5f3a\" class=\"wp-block-heading\">2.Mosica\u56fe\u50cf\u52a0\u5f3a<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u601d\u8def\uff1a<\/strong>\u00a0\u5c06\u56db\u5f20\u56fe\u7247\u8fdb\u884c\u968f\u673a\u88c1\u526a\uff0c\u518d\u62fc\u63a5\u5230\u4e00\u5f20\u56fe\u4e0a\u4f5c\u4e3a\u8bad\u7ec3\u6570\u636e<\/li>\r\n\r\n\r\n\r\n<li><strong>\u4f18\u70b9\uff1a<\/strong>\u589e\u52a0\u6837\u672c\u591a\u6837\u6027<\/li>\r\n\r\n\r\n\r\n<li>\u589e\u52a0\u4e00\u5f20\u56fe\u7247\u4e2d\u7684\u76ee\u6807\u6570\uff0c\u5229\u4e8e\u591a\u76ee\u6807\u8bad\u7ec3<\/li>\r\n\r\n\r\n\r\n<li>Batch Normal \u4e00\u6b21\u80fd\u7edf\u8ba1\u591a\u5f20\u56fe\u7247\u7684\u7ed3\u679c<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">3.SPP\u7f51\u7edc<\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-165\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729589836-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173704-1024x438.png\" alt=\"\" width=\"760\" height=\"325\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589836-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173704-1024x438.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589836-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173704-300x128.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589836-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173704-768x329.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589836-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173704.png 1054w\" sizes=\"auto, (max-width: 760px) 100vw, 760px\" \/><\/figure>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-166\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729589869-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173728-1024x324.png\" alt=\"\" width=\"426\" height=\"135\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589869-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173728-1024x324.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589869-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173728-300x95.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589869-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173728-768x243.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729589869-\u5c4f\u5e55\u622a\u56fe-2024-10-22-173728.png 1051w\" sizes=\"auto, (max-width: 426px) 100vw, 426px\" \/><\/figure>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p>YOLO SPP \u7684\u7f51\u7edc\u5728\u539fv3\u7684\u57fa\u7840\u4e0a\u589e\u52a0\u4e86\u4e00\u5c42 SPP \u7f51\u7edc\u5c42\u3002SPP \u7f51\u7edc\u7684\u5de5\u4f5c\u539f\u7406\u662f\u5bf9\u8f93\u5165\u8fdb\u884c\u4e09\u6b21\u4e0d\u540c kernel \u7684\u6700\u5927\u6c60\u5316\u64cd\u4f5c\uff0c\u4e14<strong>\u6c60\u5316\u540e\u7279\u5f81\u56fe\u7684\u5c3a\u5bf8\u4e0d\u53d8<\/strong>\uff0c\u6700\u540e\u7684\u4e09\u6b21\u6c60\u5316\u7ed3\u679c\u5728\u901a\u9053\u7ef4\u5ea6\u4e0a\u76f4\u63a5\u62fc\u63a5\u4f5c\u4e3a\u8f93\u51fa\u7ed3\u679c\u3002<\/p>\r\n\r\n\r\n\r\n<h1 id=\"_4-iou-\u4f4d\u7f6e\u635f\u5931\" class=\"wp-block-heading\">4.IOU\u56fe\u7247\u635f\u5931<\/h1>\r\n\r\n\r\n\r\n<h2 id=\"_41-l2-\u4f4d\u7f6e\u635f\u5931\u7f3a\u9677\" class=\"wp-block-heading\">4.1L2\u4f4d\u7f6e\u635f\u5931\u7f3a\u9677<\/h2>\r\n\r\n\r\n\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-180 \" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729599343-\u5c4f\u5e55\u622a\u56fe-2024-10-22-183732.png\" alt=\"\" width=\"290\" height=\"176\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599343-\u5c4f\u5e55\u622a\u56fe-2024-10-22-183732.png 1017w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599343-\u5c4f\u5e55\u622a\u56fe-2024-10-22-183732-300x182.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599343-\u5c4f\u5e55\u622a\u56fe-2024-10-22-183732-768x466.png 768w\" sizes=\"auto, (max-width: 290px) 100vw, 290px\" \/><\/p>\r\n\r\n\r\n\r\n<p>\u4e0a\u9762\u4e09\u79cd\u9884\u6d4b\u6846\u4e0e Ground True Box \u7684\u5339\u914d\u60c5\u51b5\uff0c\u539f v3 \u7684 L2 \u4f4d\u7f6e\u635f\u5931\u51fd\u6570\u8ba1\u7b97\u5f97\u5230\u635f\u5931\u7ed3\u679c\u662f\u4e00\u6837\u7684\uff0c\u4f46\u662f\u6839\u636e\u8089\u773c\u89c2\u5bdf\uff0c\u660e\u663e\u7b2c\u4e09\u79cd\u9884\u6d4b\u8981\u4f18\u4e8e\u5176\u4f59\u4e24\u79cd\u9884\u6d4b\u7ed3\u679c\u3002<strong>\u56e0\u6b64\uff0cL2 \u635f\u5931\u4e0d\u80fd\u5f88\u597d\u53cd\u5e94\u9884\u6d4b\u6846\u4e0e\u771f\u5b9e\u6846\u76f8\u91cd\u5408\u7684\u4f18\u52a3\u7a0b\u5ea6\u3002<\/strong><\/p>\r\n\r\n\r\n\r\n<h2 id=\"_42-iou-\u635f\u5931\" class=\"wp-block-heading\">4.2IOU\u635f\u5931<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u539f\u7406\uff1a<\/strong>\u00a0\u57fa\u4e8e\u9884\u6d4b\u6846\u4e0e Ground True Box \u7684 IOU \u6765\u53cd\u6620\u9884\u6d4b\u7ed3\u679c\u4e0e\u671f\u671b\u7ed3\u679c\u7684\u4f4d\u7f6e\u635f\u5931IoU\u00a0loss=1\u2212IoUIoU\u00a0loss=1\u2212IoU<\/li>\r\n\r\n\r\n\r\n<li><strong>\u7f3a\u70b9\uff1aIOU \u7684\u53d6\u503c\u8303\u56f4\u4e3a [0,1]\u3002\u5f53\u9884\u6d4b\u6846\u4e0e Ground True Box \u4e0d\u5b58\u5728\u91cd\u53e0\u90e8\u5206\u65f6\uff0cIOU\u6052\u7b49\u4e8e0\u3002\u8fd9\u5c31\u5bfc\u81f4\u9884\u6d4b\u6846\u4e0e Ground True Box \u4e0d\u7ba1\u76f8\u5dee\u591a\u8fdc\uff0c\u635f\u5931\u503c\u90fd\u662f\u6052\u5b9a\u7684\uff0c\u4e0d\u5229\u7528\u7f51\u7edc\u5b66\u4e60\u3002<\/strong><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 id=\"_43-giou-\u635f\u5931\" class=\"wp-block-heading\">4.3GIOU\u635f\u5931<\/h2>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-181\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729599363-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201501-300x226.png\" alt=\"\" width=\"220\" height=\"166\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599363-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201501-300x226.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599363-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201501-768x579.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599363-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201501.png 787w\" sizes=\"auto, (max-width: 220px) 100vw, 220px\" \/><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>GIOU\u5b9a\u4e49\uff1a<\/strong>GIoU=IoU\u2212Ac\u2212uAcGIoU=IoU\u2212AcAc\u2212u\u200b \u5176\u4e2d\u00a0AcAc\u00a0\u4e3a\u9884\u6d4b\u6846\u4e0e Ground True Box\u7684\u5916\u63a5\u77e9\u5f62\u6846\u9762\u79ef\uff08\u84dd\u8272\u7ebf\u6846\uff09\uff1buu\u00a0\u4e3a\u9884\u6d4b\u6846\u4e0e Ground True Box\u7684\u5e76\u96c6\u3002\u5f53\u9884\u6d4b\u6846\u4e0e Ground True Box\u5b8c\u5168\u91cd\u5408\u65f6\uff0cGIoU=1GIoU=1\uff1b\u5f53\u9884\u6d4b\u6846\u4e0e Ground True Box \u8ddd\u79bb\u65e0\u9650\u8fdc\u65f6\uff0cGIoU=\u22121GIoU=\u22121<\/li>\r\n\r\n\r\n\r\n<li><strong>GIOU\u635f\u5931\uff1a<\/strong>GIoU\u00a0loss=1\u2212GIoUGIoU\u00a0loss=1\u2212GIoU<\/li>\r\n\r\n\r\n\r\n<li><strong>GIOU\u7f3a\u70b9\uff1a<\/strong>\u00a0\u5f53\u9884\u6d4b\u6846\u4e0e Ground True Box \u9ad8\u5ea6\uff08\u5bbd\u5ea6\uff09\u4e00\u6837\u65f6\uff0c\u5728\u6c34\u5e73\uff08\u5782\u76f4\uff09\u65b9\u5411\u4e0a\uff0cGIoUGIoU\u00a0\u4f1a\u9000\u5316\u4e3a\u00a0IoUIoU<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 id=\"_44-diou-\u635f\u5931\" class=\"wp-block-heading\">4.4DIOU\u635f\u5931<\/h2>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-182\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729599381-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201613-300x218.png\" alt=\"\" width=\"142\" height=\"103\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599381-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201613-300x218.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599381-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201613.png 540w\" sizes=\"auto, (max-width: 142px) 100vw, 142px\" \/><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>DIOU\u5b9a\u4e49\uff1a<\/strong>DIoU=IoU\u2212d2c2DIoU=IoU\u2212c2d2\u200b\uff1a\u5176\u4e2d\u00a0dd\u00a0\u4e3a\u9884\u6d4b\u6846\u4e0e Ground True Box\u4e2d\u5fc3\u70b9\u4e4b\u95f4\u7684\u8ddd\u79bb<\/li>\r\n\r\n\r\n\r\n<li><strong>DIOU \u635f\u5931\uff1a<\/strong>DIoU\u00a0loss=1\u2212DIoUDIoU\u00a0loss=1\u2212DIoU<\/li>\r\n\r\n\r\n\r\n<li><strong>\u4f18\u70b9\uff1a<\/strong>\u00a0\u6536\u655b\u901f\u5ea6\u8981\u5feb\u4e8e IOU \u4e0e GIOU \u635f\u5931<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 id=\"_45-ciou-\u635f\u5931\" class=\"wp-block-heading\">4.5CIOU\u635f\u5931<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>CIOU\u5b9a\u4e49\uff1a<\/strong>CIoU=IoU\u2212d2c2\u2212\u03b1vv=4\u03c02(arctan\u2061wgthgt\u2212arctan\u2061wh)2\u03b1=v1\u2212IoU+vCIoUv\u03b1\u200b=IoU\u2212c2d2\u200b\u2212\u03b1v=\u03c024\u200b(arctanhgtwgt\u200b\u2212arctanhw\u200b)2=1\u2212IoU+vv\u200b\u200b<\/li>\r\n\r\n\r\n\r\n<li><strong>CIOU\u635f\u5931\uff1a<\/strong>CIoU\u00a0loss=1\u2212CIoUCIoU\u00a0loss=1\u2212CIoU<\/li>\r\n\r\n\r\n\r\n<li><strong>\u4f18\u70b9\uff1a<\/strong>\u00a0DIOU \u53ea\u8003\u8651\u4e86\u9884\u6d4b\u6846\u4e0e Ground True Box \u91cd\u53e0\u9762\u79ef\u3001\u4e2d\u5fc3\u8ddd\u79bb\u7684\u51e0\u4f55\u5dee\u5f02\uff0c\u800c CIOU \u5728\u6b64\u57fa\u7840\u4e0a\uff0c\u589e\u52a0\u4e86\u300c\u957f\u5bbd\u6bd4\u300d\u7684\u635f\u5931\uff0c\u4f7f\u5f97\u635f\u5931\u7684\u8ba1\u7b97\u7cbe\u5ea6\u66f4\u9ad8\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h1 id=\"yolo-v4\" class=\"wp-block-heading\">YOLOV4<\/h1>\r\n\r\n\r\n\r\n<h2 id=\"_1-\u7f51\u7edc\u7ed3\u6784\" class=\"wp-block-heading\">1.\u7f51\u7edc\u7ed3\u6784<\/h2>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-183 \" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729599415-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201645.png\" alt=\"\" width=\"685\" height=\"297\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599415-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201645.png 1020w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599415-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201645-300x130.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599415-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201645-768x333.png 768w\" sizes=\"auto, (max-width: 685px) 100vw, 685px\" \/><\/p>\r\n\r\n\r\n\r\n<h3 id=\"_11-\u7f51\u7edc\u6a21\u578b\" class=\"wp-block-heading\">1.1\u7f51\u7edc\u6a21\u578b<\/h3>\r\n\r\n\r\n\r\n<p>backbone\u7f51\u7edc\u7684\u7ec4\u6210\u5355\u5143\u4e0d\u518d\u662f RES \u6a21\u5757\uff0c\u800c\u662f CSP \u6a21\u5757\uff1b<\/p>\r\n\r\n\r\n\r\n<p>backbone \u7f51\u7edc\u7684\u8f93\u51fa\u4f1a\u7ecf\u8fc7\u4e00\u4e2a SPP \u6a21\u5757\uff1b<\/p>\r\n\r\n\r\n\r\n<p>Neck \u90e8\u5206\u5219\u501f\u9274\u4e86 PAN \u6a21\u5757<\/p>\r\n\r\n\r\n\r\n<h3 id=\"_12-csp-\u6a21\u5757\" class=\"wp-block-heading\">1.2CSP\u6a21\u5757<\/h3>\r\n\r\n\r\n\r\n<p><strong>CSP \u7ed3\u6784\uff1a<\/strong><\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-184 \" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729599468-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201739.png\" alt=\"\" width=\"255\" height=\"307\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599468-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201739.png 838w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599468-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201739-249x300.png 249w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599468-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201739-768x924.png 768w\" sizes=\"auto, (max-width: 255px) 100vw, 255px\" \/><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u5176\u4e2d Mish \u8868\u793a\u7684\u662f Mish \u6fc0\u6d3b\u51fd\u6570Mish(x)=xtanh\u2061(ln\u2061(1+ex))Mish(x)=xtanh(ln(1+ex))<\/li>\r\n\r\n\r\n\r\n<li><strong>\u4f18\u70b9\uff1a<\/strong>\r\n<ol class=\"wp-block-list\">\r\n<li>\u66f4\u5feb\u7684\u5b66\u4e60\u901f\u5ea6<\/li>\r\n\r\n\r\n\r\n<li>\u51cf\u5c11\u4e86\u5185\u5b58\u6d88\u8017<\/li>\r\n\r\n\r\n\r\n<li>\u52a0\u5feb\u8ba1\u7b97\u901f\u5ea6<\/li>\r\n<\/ol>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h3 id=\"_13-pan-\u6a21\u5757\" class=\"wp-block-heading\">1.3PAN\u6a21\u5757<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>PAN \u6a21\u5757\uff1a<\/strong>\u00a0\u5148\u5bf9\u4e3b\u5e72\u7f51\u7edc\u4ece\u4e0a\u5230\u4e0b\u8fdb\u884c\u7279\u5f81\u878d\u5408\uff0c\u4e4b\u540e\u518d\u4ece\u4e0b\u5230\u4e0a\u8fdb\u884c\u7279\u5f81\u878d\u5408\u5f97\u5230\u9884\u6d4b\u7ed3\u679c<br \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-185 \" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729599533-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201814.png\" alt=\"\" width=\"697\" height=\"239\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599533-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201814.png 1035w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599533-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201814-300x103.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599533-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201814-1024x351.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599533-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201814-768x263.png 768w\" sizes=\"auto, (max-width: 697px) 100vw, 697px\" \/><\/li>\r\n\r\n\r\n\r\n<li><strong>YOLO V4 \u4e2d\u7684\u5b9e\u73b0\uff1a<\/strong>\u00a0\u5728\u539f\u6765 v3 \u9884\u6d4b\u7f51\u7edc\u7684\u7ed3\u6784\u4e0a\uff0c\u53c8\u8fdb\u884c\u4e86\u4e00\u6b21\u7279\u5f81\u5c42\u878d\u5408\uff0c\u6700\u7ec8\u5f97\u5230\u6700\u540e\u7684\u8f93\u51fa\u7ed3\u679c\u3002<br \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-186 \" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729599554-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201833.png\" alt=\"\" width=\"710\" height=\"423\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599554-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201833.png 2377w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599554-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201833-300x179.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599554-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201833-1024x610.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599554-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201833-768x458.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599554-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201833-1536x916.png 1536w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729599554-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201833-2048x1221.png 2048w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">2.\u9884\u6d4b\u6846\u4e2d\u5fc3\u5750\u6807\u6539\u8fdb<\/h2>\r\n\r\n\r\n\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-187\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729600821-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201939-300x297.png\" alt=\"\" width=\"300\" height=\"297\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600821-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201939-300x297.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600821-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201939-150x150.png 150w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600821-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201939-768x762.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600821-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201939.png 951w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\r\n\r\n\r\n\r\n<p>\u5916\u63a5\u77e9\u5f62\u6846\u4e2d\u5fc3\u70b9\u5750\u6807\u4e3a\uff1a<\/p>\r\n\r\n\r\n\r\n<p>bx=\u03c3(tx)+Cxby=\u03c3(ty)+Cy\u03c3(x)=11+e\u2212xbx\u200bby\u200b\u03c3(x)\u200b=\u03c3(tx\u200b)+Cx\u200b=\u03c3(ty\u200b)+Cy\u200b=1+e\u2212x1\u200b\u200b<\/p>\r\n\r\n\r\n\r\n<p>\u5728 v2 \u4e0e v3 \u7248\u672c\u4e2d\uff0c\u5229\u7528\u00a0\u03c3(x)\u03c3(x)\u00a0\u51fd\u6570\u6765\u7ea6\u675f\u00a0tx,tytx\u200b,ty\u200b\u00a0\uff0c\u7ea6\u675f\u540e\u7684\u53d6\u503c\u8303\u56f4\u4e3a\u00a0(0,1)(0,1)\u3002\u5f53\u00a0x\u21d2+\u221ex\u21d2+\u221e\u00a0\u65f6\uff0c\u03c3(x)=1\u03c3(x)=1\uff1b\u5f53\u00a0x\u21d2\u2212\u221ex\u21d2\u2212\u221e\u00a0\u65f6\uff0c\u03c3(x)=0\u03c3(x)=0\uff0c<strong>\u8fd9\u5c31\u5bfc\u81f4Ground True Box\u7684\u4e2d\u5fc3\u70b9\u5728\u7f51\u683c\u8fb9\u754c\u4e0a\u65f6\uff0c\u6a21\u578b\u9884\u6d4b\u56f0\u96be\u3002<\/strong>\u00a0\u4e3a\u4e86\u89e3\u51b3\u8be5\u95ee\u9898\uff0c\u5728 v4 \u4e2d\u5c06\u7ea6\u675f\u540e\u7684\u53d6\u503c\u8303\u56f4\u8fdb\u884c\u62d3\u5bbd\uff0c\u5916\u63a5\u77e9\u5f62\u6846\u4e2d\u5fc3\u70b9\u5750\u6807\u4fee\u6539\u4e3a<\/p>\r\n\r\n\r\n\r\n<p>bx=[\u03c3(tx)S\u2212S\u221212]+Cxby=[\u03c3(ty)S\u2212S\u221212]+Cybx\u200bby\u200b\u200b=[\u03c3(tx\u200b)S\u22122S\u22121\u200b]+Cx\u200b=[\u03c3(ty\u200b)S\u22122S\u22121\u200b]+Cy\u200b\u200b<\/p>\r\n\r\n\r\n\r\n<p>\u4e00\u822c\u5bf9\u4e8e\u00a0SS\u00a0\u7684\u53d6\u503c\u4e3a\uff0cS=2S=2<\/p>\r\n\r\n\r\n\r\n<p>bx=[2\u03c3(tx)\u22120.5]+Cxby=[2\u03c3(ty)\u22120.5]+Cybx\u200bby\u200b\u200b=[2\u03c3(tx\u200b)\u22120.5]+Cx\u200b=[2\u03c3(ty\u200b)\u22120.5]+Cy\u200b\u200b<\/p>\r\n\r\n\r\n\r\n<p><strong>\u7ecf\u8fc7\u4e0a\u8ff0\u516c\u5f0f\u8fdb\u884c\u7ea6\u675f\u540e\uff0c\u53d6\u503c\u8303\u56f4\u5c31\u53d8\u4e3a\u00a0(\u22120.5,1.5)(\u22120.5,1.5)\uff0c\u5c31\u89e3\u51b3\u4e86\u53d6\u503c\u8303\u56f4\u7684\u95ee\u9898\u3002<\/strong><\/p>\r\n\r\n\r\n\r\n<h2 id=\"_3-\u6b63\u6837\u672c\u6539\u8fdb\" class=\"wp-block-heading\">3.\u6b63\u6837\u672c\u6539\u8fdb<\/h2>\r\n\r\n\r\n\r\n<h3 id=\"_31-v3-\u7248\u672c\u7f3a\u70b9\" class=\"wp-block-heading\">3.1 v3\u7248\u672c<\/h3>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-188\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729600922-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201957-222x300.png\" alt=\"\" width=\"198\" height=\"268\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600922-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201957-222x300.png 222w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600922-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201957-757x1024.png 757w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600922-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201957-768x1040.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600922-\u5c4f\u5e55\u622a\u56fe-2024-10-22-201957.png 809w\" sizes=\"auto, (max-width: 198px) 100vw, 198px\" \/><\/p>\r\n\r\n\r\n\r\n<p>\u5728 v3 \u7248\u672c\u4e2d\uff0c\u5047\u8bbe Ground True Box \u4e0e Anchor Box \u4e2d\u5fc3\u91cd\u5408\uff0c\u7136\u540e\u8ba1\u7b97 IOU \uff0c\u5e76\u6839\u636e IOU \u7ed3\u679c\u6765\u786e\u5b9a Ground True Box \u4e0e\u54ea\u4e2a Anchor Box \u6240\u5bf9\u5e94\uff0c\u5c06 IOU \u6700\u5927\u7684Anchor Box \u89c6\u4e3a Ground True Box \u7684\u9884\u9009\u6846\uff0c\u5373\u6b63\u6837\u672c\uff08\u865a\u7ebf\u6846\uff09\uff0c\u800c IOU \u5927\u4e8e\u9608\u503c\uff0c\u4f46\u5e76\u975e\u6700\u5927\u503c\u7684 Anchor Box \uff08\u70b9\u865a\u7ebf\u6846\uff09 \u5219\u820d\u5f03\uff0c\u5e76\u4e0d\u53c2\u4e0e\u635f\u5931\u8ba1\u7b97\u3002<strong>\u8fd9\u5c31\u4f7f\u5f97\u4e00\u4e2a Ground True Box \u53ea\u4e0e\u6a21\u578b\u4e2d\u7684\u4e00\u4e2a\u9884\u6d4b\u7ed3\u679c\u6240\u5bf9\u5e94\u3002<\/strong><\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-189 \" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729600941-\u5c4f\u5e55\u622a\u56fe-2024-10-22-202004.png\" alt=\"\" width=\"354\" height=\"207\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600941-\u5c4f\u5e55\u622a\u56fe-2024-10-22-202004.png 1007w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600941-\u5c4f\u5e55\u622a\u56fe-2024-10-22-202004-300x175.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600941-\u5c4f\u5e55\u622a\u56fe-2024-10-22-202004-768x449.png 768w\" sizes=\"auto, (max-width: 354px) 100vw, 354px\" \/><\/p>\r\n\r\n\r\n\r\n<p>\u4ece\u4e0a\u8ff0 Ground True Box \u4e0e Anchor Box \u7684\u5339\u914d\u89c4\u5219\u4e2d\u53ef\u4ee5\u770b\u51fa\uff1a\u5bf9\u4e8e\u6700\u7ec8\u9884\u6d4b\u7ed3\u679c\u800c\u8a00\uff0c\u6b63\u6837\u672c\u7684\u6570\u91cf\u662f\u8fdc\u5c0f\u4e8e\u8d1f\u6837\u672c\u6570\u91cf\u7684\u3002\u4e3a\u4e86\u63d0\u9ad8\u6b63\u6837\u672c\u7684\u6570\u91cf\uff0cv4 \u5bf9\u5339\u914d\u89c4\u5219\u8fdb\u884c\u6539\u8fdb\u3002<\/p>\r\n\r\n\r\n\r\n<h3 id=\"_32-v4-\u7248\u672c\u6539\u8fdb\" class=\"wp-block-heading\">3.2 V4\u6539\u8fdb<\/h3>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-190 \" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729600967-\u5c4f\u5e55\u622a\u56fe-2024-10-22-202009.png\" alt=\"\" width=\"442\" height=\"234\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600967-\u5c4f\u5e55\u622a\u56fe-2024-10-22-202009.png 1039w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600967-\u5c4f\u5e55\u622a\u56fe-2024-10-22-202009-300x159.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600967-\u5c4f\u5e55\u622a\u56fe-2024-10-22-202009-1024x542.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600967-\u5c4f\u5e55\u622a\u56fe-2024-10-22-202009-768x407.png 768w\" sizes=\"auto, (max-width: 442px) 100vw, 442px\" \/><\/p>\r\n\r\n\r\n\r\n<p>Box \u4e2d\u5fc3\u70b9\u7ea6\u675f\u53d6\u503c\u8303\u56f4\u7684\u6269\u5927\uff1a\u00a0(0,1)(0,1)\u00a0\u6269\u5c55\u4e3a\u00a0(=0.5,1.5)(=0.5,1.5)\u00a0\uff0c\u8fd9\u5c31\u4f7f\u5f97\u4e00\u4e2a\u00a0(bx,by)(bx\u200b,by\u200b)\u00a0\u5750\u6807\u53ef\u4ee5\u901a\u8fc7\u4e0d\u540c\u7684\u00a0(cx,cy)(cx\u200b,cy\u200b)\u00a0\u8fdb\u884c\u8868\u793a\u3002\u4f8b\u5982\u4e0a\u56fe\u4e2d\u7684\u00a0(bx,by)(bx\u200b,by\u200b)<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u6839\u636e v3 \u7248\u672c\u7684\u5b9a\u4e49\uff0c(bx,by)(bx\u200b,by\u200b)\u00a0\u80af\u5b9a\u53ef\u4ee5\u901a\u8fc7\u00a0(cx1,cy2)(cx1\u200b,cy2\u200b)\u00a0\u8fdb\u884c\u63cf\u8ff0<\/li>\r\n\r\n\r\n\r\n<li>\u7531\u4e8e\u00a0by&lt;cy1+1.5by\u200b&lt;cy1\u200b+1.5\uff0c(bx,by)(bx\u200b,by\u200b)\u00a0\u4e5f\u53ef\u4ee5\u901a\u8fc7\u00a0(cx1,cy1)(cx1\u200b,cy1\u200b)\u00a0\u8fdb\u884c\u63cf\u8ff0<\/li>\r\n\r\n\r\n\r\n<li>\u7531\u4e8e\u00a0bx&lt;cx2+1.5bx\u200b&lt;cx2\u200b+1.5\uff0c(bx,by)(bx\u200b,by\u200b)\u00a0\u4e5f\u53ef\u4ee5\u901a\u8fc7\u00a0(cx2,cy2)(cx2\u200b,cy2\u200b)\u00a0\u8fdb\u884c\u63cf\u8ff0<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p><strong>\u56e0\u6b64\uff0c\u4e00\u4e2a Ground True Box \u53ef\u4ee5\u5bf9\u5e94\u9884\u6d4b\u7ed3\u679c\u4e2d\u4e09\u4e2a\u4f4d\u7f6e\u7684\u5355\u5143\u683c\u3002 \u81f3\u4e8e\u4e09\u4e2a\u5355\u5143\u683c\u4e2d\uff0c\u54ea\u4e2a Anchor Box \u4e0e Ground True Box \u5148\u5bf9\u5e94\uff0c\u5219\u548c v3 \u7248\u672c\u4e00\u6837\uff0c\u8fd8\u662f\u6839\u636e IOU \u8fdb\u884c\u5339\u914d\uff0c \u4f46\u662f\u4e0d\u540c\u4e8e v3 \u7248\u672c\uff0c\u5728 v4 \u4e2d\uff0c\u8ba4\u4e3a\u6240\u6709 IOU \u5927\u4e8e\u9608\u503c\u7684 Anchor Box \u5bf9\u5e94\u7684\u9884\u6d4b\u7ed3\u679c\u5747\u662f\u4e0e Ground True Box \u5bf9\u5e94\u7684\u6b63\u6837\u672c\u3002 \u7ecf\u8fc7\u4e0a\u8ff0\u5904\u7406\uff0c\u6b63\u6837\u672c\u6570\u91cf\u5f97\u5230\u4e86\u6269\u5145\u3002<\/strong><\/p>\r\n\r\n\r\n\r\n<p>\u4e0a\u6587\u53ea\u8ba8\u8bba\u4e86 Ground True Box \u4e0e\u7f51\u683c\u4e2d\u5355\u5143\u683c\u7684\u4e00\u79cd\u5339\u914d\u60c5\u51b5\uff0c\u8fd8\u6709\u5176\u4ed6\u4e0d\u540c\u7684\u5339\u914d\u60c5\u5f62\uff1a<\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-191 \" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729600986-\u5c4f\u5e55\u622a\u56fe-2024-10-22-202015.png\" alt=\"\" width=\"502\" height=\"320\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600986-\u5c4f\u5e55\u622a\u56fe-2024-10-22-202015.png 985w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600986-\u5c4f\u5e55\u622a\u56fe-2024-10-22-202015-300x192.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729600986-\u5c4f\u5e55\u622a\u56fe-2024-10-22-202015-768x490.png 768w\" sizes=\"auto, (max-width: 502px) 100vw, 502px\" \/><\/p>\r\n\r\n\r\n\r\n<h1 id=\"yolo-v5\" class=\"wp-block-heading\">YOLOV5<\/h1>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-197 \" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729601189-15551d183d1e4a71a7456ef7ce534779.png\" alt=\"\" width=\"694\" height=\"634\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601189-15551d183d1e4a71a7456ef7ce534779.png 2720w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601189-15551d183d1e4a71a7456ef7ce534779-300x274.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601189-15551d183d1e4a71a7456ef7ce534779-1024x936.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601189-15551d183d1e4a71a7456ef7ce534779-768x702.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601189-15551d183d1e4a71a7456ef7ce534779-1536x1404.png 1536w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601189-15551d183d1e4a71a7456ef7ce534779-2048x1872.png 2048w\" sizes=\"auto, (max-width: 694px) 100vw, 694px\" \/><\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">1.\u7f51\u7edc\u6a21\u578b<\/h2>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-196 \" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729601085-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204354.png\" alt=\"\" width=\"507\" height=\"213\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601085-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204354.png 985w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601085-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204354-300x126.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601085-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204354-768x323.png 768w\" sizes=\"auto, (max-width: 507px) 100vw, 507px\" \/><\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">1.1Force\u6a21\u5757\u6539\u8fdb<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Focus \u6a21\u5757\uff1a<\/strong>\u00a0\u5c06\u4e00\u4e2a\u8f93\u5165\u56fe\u7247\u5212\u5206\u4e3a\u4e00\u4e2a\u4e2a\u00a0<code>2x2<\/code>\u00a0\u7684\u50cf\u7d20\u5757\uff0c\u7136\u540e\u5c06<code>2x2<\/code>\u50cf\u7d20\u5757\u76f8\u540c\u7684\u989c\u8272\u4f4d\u7f6e\u7684\u50cf\u7d20\u62fc\u63a5\u5728\u4e00\u8d77\uff0c\u6700\u7ec8\u5b9e\u73b0\u8f93\u5165\u56fe\u7247\u957f\u5bbd\u51cf\u534a\uff0c\u5e76\u4e14\u901a\u8fc7\u6570\u53d8\u4e3a<code>4<\/code>\u3002\u4e4b\u540e\u5728\u5bf9\u53d8\u6362\u540e\u7684\u7ed3\u679c\uff0c\u901a\u8fc7<code>3x3<\/code>\u7684\u5377\u79ef\u6838\u8fdb\u884c\u5377\u79ef\u3002<\/li>\r\n\r\n\r\n\r\n<li><strong>\u6539\u8fdb\u65b9\u6848\uff1a<\/strong>\u00a0\u4e0a\u9762\u7684\u4e00\u987f\u64cd\u4f5c\uff0c\u5176\u5b9e\u548c\u76f4\u63a5\u5bf9\u56fe\u7247\u8fdb\u884c\u00a0<code>6x6<\/code>\u00a0\u5377\u79ef\u6838\u5377\u79ef\u7684\u7ed3\u679c\u662f\u7b49\u6548\u7684<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">1.2SPPF\u6a21\u578b<\/h3>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-195 \" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729601084-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204400.png\" alt=\"\" width=\"553\" height=\"216\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601084-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204400.png 1001w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601084-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204400-300x117.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601084-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204400-768x301.png 768w\" sizes=\"auto, (max-width: 553px) 100vw, 553px\" \/><\/p>\r\n\r\n\r\n\r\n<p>SPPF \u6a21\u5757\u5c31\u662f V4 \u4e2d\u7684 SPP \u6a21\u578b\u6539\u8fdb\uff0c\u8fd0\u7b97\u7ed3\u679c\u662f\u7b49\u6548\u7684\uff0c\u4f46\u662f\u8ba1\u7b97\u901f\u5ea6\u66f4\u5feb\uff08\u7c7b\u4f3c\u4e8e OpenCV \u4e2d\uff0c\u5229\u7528\u591a\u6b21\u7b80\u5355\u9ad8\u65af\u6a21\u7cca\u6765\u4ee3\u66ff\u4e00\u6b21\u590d\u6742\u7684\u9ad8\u65af\u6a21\u7cca\uff0c\u8fd9\u53ef\u4ee5\u4f7f\u5f97\u8ba1\u7b97\u91cf\u964d\u4f4e\uff0c\u4e0a\u4e00\u6b65\u7684\u8ba1\u7b97\u7ed3\u679c\u53ef\u4ee5\u91cd\u590d\u5229\u7528\uff0c\u5e76\u4e14\u6700\u7ec8\u8ba1\u7b97\u7ed3\u679c\u7b49\u4ef7\uff09\u3002<\/p>\r\n\r\n\r\n\r\n<h2 id=\"_2-\u7f6e\u4fe1\u5ea6\u635f\u5931\" class=\"wp-block-heading\">2.\u7f6e\u4fe1\u5ea6\u635f\u5931<\/h2>\r\n\r\n\r\n\r\n<ol class=\"wp-block-list\">\r\n<li>\u63cf\u8ff0\u7684\u4e0d\u518d\u662f\u5f53\u524d\u9884\u6d4b\u7ed3\u679c\u4e2d\u662f\u5426\u5b58\u5728\u68c0\u6d4b\u76ee\u6807\u7684\u6982\u7387\uff0c\u800c\u662f\u9884\u6d4b\u7ed3\u679c\u4e0e Ground True Box \u7684 CIOU\u3002<\/li>\r\n\r\n\r\n\r\n<li>\u52a0\u6743\u5408\u5e76\u4e0d\u540c\u5c3a\u5ea6\u7684\u7f6e\u4fe1\u5ea6\u635f\u5931\uff0c\u5bf9\u4e8e\u4e0d\u540c\u9884\u6d4b\u5c3a\u5ea6\u5bf9\u5e94\u7684\u635f\u5931\u503c\uff0c\u7ed9\u5b9a\u4e0d\u540c\u7684\u6743\u91cd<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n<p>confLoss=4\u00a0confLoss13+1\u00a0confLoss26+0.4\u00a0confLoss52confLoss=4\u00a0confLoss13\u200b+1\u00a0confLoss26\u200b+0.4\u00a0confLoss52\u200b<\/p>\r\n\r\n\r\n\r\n<h2 id=\"_3-\u9884\u6d4b\u6846\u5bbd\u9ad8\u6539\u8fdb\" class=\"wp-block-heading\">3.\u9884\u6d4b\u6846\u5bbd\u9ad8\u6539\u8fdb<\/h2>\r\n\r\n\r\n\r\n<p>\u5728 v2 - v4 \u7248\u672c\u4e2d\uff0c\u9884\u6d4b\u6846\u7684\u5bbd\u9ad8\u8ba1\u7b97\u516c\u5f0f\u5982\u4e0b<\/p>\r\n\r\n\r\n\r\n<p>bw=Pwetwbh=Phethbw\u200b=Pw\u200betw\u200bbh\u200b=Ph\u200beth\u200b\u200b<\/p>\r\n\r\n\r\n\r\n<p>\u53ef\u4ee5\u770b\u51fa\uff0c\u5bf9\u4e8e Anchor Box \u5bbd\u9ad8\u7684\u8c03\u8282\u6bd4\u5217\u00a0exex\u00a0\u662f\u6ca1\u6709\u6700\u5927\u503c\u9650\u5236\u7684\u3002\u56e0\u6b64\uff0c\u5728 v5 \u4e2d\u5c06\u5bbd\u9ad8\u7684\u8c03\u8282\u6bd4\u5217\u4fee\u6539\u4e3a<\/p>\r\n\r\n\r\n\r\n<p>bw=Pw[2\u03c3(tw)]2bh=Ph[2\u03c3(th)]2bw\u200bbh\u200b\u200b=Pw\u200b[2\u03c3(tw\u200b)]2=Ph\u200b[2\u03c3(th\u200b)]2\u200b<\/p>\r\n\r\n\r\n\r\n<h2 id=\"_4-\u6b63\u6837\u672c\u5339\u914d\u6539\u8fdb\" class=\"wp-block-heading\">4.\u6b63\u6837\u672c\u5339\u914d\u6539\u8fdb<\/h2>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-194 \" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729601083-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204405.png\" alt=\"\" width=\"624\" height=\"215\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601083-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204405.png 1064w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601083-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204405-300x103.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601083-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204405-1024x353.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601083-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204405-768x265.png 768w\" sizes=\"auto, (max-width: 624px) 100vw, 624px\" \/><\/p>\r\n\r\n\r\n\r\n<p>\u7531\u4e8e\u5bf9\u9884\u6d4b\u6846\u5bbd\u9ad8\u8fdb\u884c\u4e86\u9650\u5236\uff0cv5 \u4e0d\u5728\u6839\u636e IOU \u7ed3\u679c\u6765\u786e\u5b9a Ground True Box \u4e0e\u54ea\u4e2a Anchor Box \u6240\u5bf9\u5e94\uff0c\u800c\u662f\u901a\u8fc7\u8ba1\u7b97 Ground True Box \u4e0e Anchor Box \u7684\u957f\u5bbd\u6bd4\u5217\u3002<strong>\u5e76\u4e14\u8ba4\u4e3a\u5bbd\u9ad8\u6bd4\u5217\u5c0f\u4e8e 4 \u7684 Anchor Box \u4e0e Ground True Box \u5bf9\u5e94\uff08\u9884\u6d4b\u7ed3\u679c\u7684 Anchor Box \u5bbd\u9ad8\u7684\u8c03\u8282\u6bd4\u5217\u5c31\u88ab\u9650\u5236\u5728\u00a0(0,4)(0,4)\uff09<\/strong>\u3002<\/p>\r\n\r\n\r\n\r\n<h1 id=\"yolo-v3-\u4ee3\u7801\u5b9e\u73b0\" class=\"wp-block-heading\">YOLOV3\u4ee3\u7801\u5b9e\u73b0<\/h1>\r\n\r\n\r\n\r\n<h1 id=\"_1-\u9879\u76ee\u7b80\u4ecb\" class=\"wp-block-heading\">1.\u9879\u76ee\u7b80\u4ecb<\/h1>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u5de5\u7a0b\u76ee\u7684\uff1a<\/strong>\u00a0\u7eaf\u624b\u64b8 YOLO v3\uff0c \u5b9e\u73b0\u5bf9\u53e3\u7f69\u7684\u68c0\u6d4b\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>\u200b<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-193\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729601081-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204410-300x171.png\" alt=\"\" width=\"300\" height=\"171\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601081-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204410-300x171.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601081-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204410-768x439.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601081-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204410.png 1000w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-192\" src=\"https:\/\/47.121.208.150\/wp-content\/uploads\/2024\/10\/1729601080-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204414-300x167.png\" alt=\"\" width=\"300\" height=\"167\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601080-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204414-300x167.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601080-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204414-768x427.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2024\/10\/1729601080-\u5c4f\u5e55\u622a\u56fe-2024-10-22-204414.png 1015w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u8bad\u7ec3\u7d20\u6750<\/strong>\uff1a\u6765\u81ea\u00a0<a href=\"https:\/\/www.bilibili.com\/video\/BV1c64y1e7wY\" target=\"_blank\"  rel=\"nofollow\" >B\u7ad9 UP\u70ae\u54e5\u5e26\u4f60\u5b66<\/a><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><strong>\u6ce8\u610f\uff1a<\/strong> \r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u7531\u4e8e GitHub \u4e0a\u7684\u00a0<a href=\"https:\/\/github.com\/eriklindernoren\/PyTorch-YOLOv3\" target=\"_blank\"  rel=\"nofollow\" >yolo v3 \u5b9e\u73b0<\/a>\u00a0\u504f\u5411\u5b9e\u9645\u5e94\u7528\uff0c\u5176\u4ee3\u7801\u5b9e\u73b0\u4e0d\u5229\u4e8e\u5b66\u4e60\uff0c\u56e0\u6b64\uff0c\u672c\u9879\u76ee\u7740\u91cd\u4e8e\u5bf9 yolo v3 \u539f\u7406\u7684\u590d\u73b0\uff0c\u4e00\u4e9b\u82b1\u91cc\u80e1\u54e8\u7684\u529f\u80fd\u5c31\u5168\u90e8\u5ffd\u7565\u6389\u4e86\uff08\u4f8b\u5982\uff0c\u539f\u9879\u76ee\u4e2d\u7684<code>.cfg<\/code>\u914d\u7f6e\u6587\u4ef6\uff09\u3002<\/li>\r\n\r\n\r\n\r\n<li>\u672c\u9879\u76ee\u4e2d\u7ed9\u51fa\u7684\u6a21\u578b\u6743\u91cd\u53c2\u6570\uff08\u5728\u00a0<code>weightsBackup<\/code>\u00a0\u6587\u4ef6\u5939\u91cc\uff09\uff0c\u7531\u4e8e\u8bad\u7ec3\u6b21\u6570\u5c11\u3001\u8bad\u7ec3\u7d20\u6750\u5c11\uff0c\u6a21\u578b\u590d\u73b0\u7b80\u5316\u7b49\u539f\u56e0\uff0c\u5176\u7cbe\u5ea6\u5e76\u4e0d\u662f\u5f88\u597d\uff0c\u4f46\u662f\u80fd\u73a9 ( *\ufe3e\u25bd\ufe3e)\u3002<\/li>\r\n\r\n\r\n\r\n<li>\u7531\u4e8e\u672c\u4eba\u662f\u5916\u884c\uff0c\u80fd\u529b\u6709\u9650\uff0c\u82e5\u53d1\u73b0\u5b58\u5728\u504f\u5dee\uff0c\u4e0d\u7528\u6000\u7591\uff0c\u90a3\u80af\u5b9a\u662f\u6211\u7684\u95ee\u9898\uff0c\u8bf7\u591a\u591a\u5305\u6db5 ( \u2022\u0300 \u03c9 \u2022\u0301 )\u2727<\/li>\r\n<\/ul>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<h1 id=\"_2-\u9879\u76ee\u8fd0\u884c\" class=\"wp-block-heading\">2.\u9879\u76ee\u8fd0\u884c<\/h1>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u73af\u5883\u9700\u6c42\uff1a<\/strong>\r\n<ul class=\"wp-block-list\">\r\n<li>Python<\/li>\r\n\r\n\r\n\r\n<li>PyTorch<\/li>\r\n\r\n\r\n\r\n<li>OpenCV<\/li>\r\n<\/ul>\r\n<\/li>\r\n\r\n\r\n\r\n<li><strong>\u8fd0\u884c\uff1a<\/strong>\u00a0\u4e0b\u8f7d\u9879\u76ee\u5de5\u7a0b\u540e\uff0c\u76f4\u63a5\u8fd0\u884c\u5bf9\u5e94\u7684 .py \u6587\u4ef6\u5373\u53ef\u3002\u9ed8\u8ba4\u662f\u542f\u52a8\u4e86<code>GPU<\/code>\uff0c\u5982\u6709\u9700\u8981\uff0c\u8bf7\u5728\u00a0<code>config<\/code>\u00a0\u4e2d\u4fee\u6539\u76f8\u5173\u914d\u7f6e<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h1 id=\"_3-\u76ee\u5f55\u7ed3\u6784\" class=\"wp-block-heading\">3.\u76ee\u5f55\u7ed3\u6784<\/h1>\r\n\r\n\r\n\r\n<p><code>triangle@LEARN:~$\u00a0tree detectMask\/\r\n. \u251c\u2500\u2500 ManageData\/ \u2502 \u2514\u2500\u2500 Datasets.py \u251c\u2500\u2500 Model\/ \u2502 \u251c\u2500\u2500 Loss.py \u2502 \u2514\u2500\u2500 Network.py \u251c\u2500\u2500 Utils\/ \u2502 \u251c\u2500\u2500 BoxProcess.py \u2502 \u251c\u2500\u2500 ImageProcess.py \u2502 \u2514\u2500\u2500 PostProcess.py \u251c\u2500\u2500 asset\/ \u2502 \u251c\u2500\u2500 images\/ \u2502 \u251c\u2500\u2500 testSet\/ \u2502 \u2502 \u251c\u2500\u2500 test_images\/ \u2502 \u2502 \u2514\u2500\u2500 test_labels\/ \u2502 \u251c\u2500\u2500 trainSet\/ \u2502 \u2502 \u251c\u2500\u2500 train_images\/ \u2502 \u2502 \u2514\u2500\u2500 train_labels\/ \u2502 \u251c\u2500\u2500 videos\/ \u2502 \u251c\u2500\u2500 weights\/ \u2502 \u2514\u2500\u2500 weightsBackup\/ \u2514\u2500\u2500 config\/ \u251c\u2500\u2500 detectImage.py \u251c\u2500\u2500 detectVideo.py \u2514\u2500\u2500 train.py<\/code><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><code>ManageData<\/code>\uff1a\u8bad\u7ec3\u96c6\u4e0e\u6d4b\u8bd5\u96c6\u7684\u6570\u636e\u7ba1\u7406\u6a21\u5757<\/li>\r\n\r\n\r\n\r\n<li><code>Model<\/code>\uff1aDarknet 53 \u6a21\u578b\u7684\u5b9e\u73b0\uff1byolo v3 \u635f\u5931\u51fd\u6570\u7684\u5b9e\u73b0<\/li>\r\n\r\n\r\n\r\n<li><code>Utils<\/code>\uff1a\u5de5\u5177\u6a21\u5757\r\n<ul class=\"wp-block-list\">\r\n<li><strong>BoxProcess<\/strong>\uff1a\u5916\u63a5\u77e9\u5f62\u76f8\u5173\u5904\u7406\u51fd\u6570<\/li>\r\n\r\n\r\n\r\n<li><strong>ImageProcess<\/strong>\uff1a\u56fe\u7247\u5c55\u793a\u3001\u53d8\u6362\u3001\u7ed8\u5236\u6587\u5b57\u4e0e\u5916\u63a5\u77e9\u5f62\u7b49\u76f8\u5173\u5904\u7406\u51fd\u6570<\/li>\r\n\r\n\r\n\r\n<li><strong>PostProcess<\/strong>\uff1a\u6781\u5927\u503c\u6291\u5236\u5f97\u5230\u6700\u7ec8\u9884\u6d4b\u7ed3\u679c\uff1b\u6a21\u578b\u8bc4\u4ef7\u6307\u6807\u8ba1\u7b97 precision , recall , ap<\/li>\r\n<\/ul>\r\n<\/li>\r\n\r\n\r\n\r\n<li><code>asset<\/code>\uff1a\u5b58\u653e\u6a21\u578b\u6d4b\u8bd5\u4e0e\u8bad\u7ec3\u76f8\u5173\u7684\u89c6\u9891\u3001\u56fe\u7247\u3001\u6a21\u578b\u6743\u91cd\u6587\u4ef6\u8d44\u6e90\u3002\r\n<ul class=\"wp-block-list\">\r\n<li><strong>images \u4e0e videos<\/strong>\uff1a\u7528\u6765\u6d4b\u8bd5\u6a21\u578b\u7684\u56fe\u7247\u4e0e\u89c6\u9891<\/li>\r\n\r\n\r\n\r\n<li><strong>trainSet<\/strong>\uff1a\u6a21\u578b\u8bad\u7ec3\u7684\u8bad\u7ec3\u96c6<\/li>\r\n\r\n\r\n\r\n<li><strong>testSet<\/strong>\uff1a\u6a21\u578b\u8bad\u7ec3\u7684\u6d4b\u8bd5\u96c6<\/li>\r\n\r\n\r\n\r\n<li><strong>weights<\/strong>\uff1a\u6a21\u578b\u8bad\u7ec3\u8fc7\u7a0b\u4e2d\uff0c\u4fdd\u5b58\u7684\u6743\u91cd\u53c2\u6570<\/li>\r\n\r\n\r\n\r\n<li><strong>weightsBackup<\/strong>\uff1a\u5907\u4efd\u7684\u6743\u91cd\u53c2\u6570<\/li>\r\n<\/ul>\r\n<\/li>\r\n\r\n\r\n\r\n<li><code>config<\/code>\uff1a\u6a21\u578b\u7684\u914d\u7f6e\u53c2\u6570<\/li>\r\n\r\n\r\n\r\n<li><strong>train.py<\/strong>\uff1a\u8bad\u7ec3\u6a21\u578b<\/li>\r\n\r\n\r\n\r\n<li><strong>detectImage.py<\/strong>\uff1a\u5229\u7528\u56fe\u7247\u8fdb\u884c\u6a21\u578b\u6d4b\u8bd5<\/li>\r\n\r\n\r\n\r\n<li><strong>detectVideo.py<\/strong>\uff1a\u5229\u7528\u89c6\u9891\u8fdb\u884c\u6a21\u578b\u6d4b\u8bd5<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>\u57fa\u7840\u6982\u5ff5 1.YOLO\u7b80\u4ecb YOLO\uff08You Only Look Once\uff09\uff1a\u662f\u4e00\u79cd\u57fa\u4e8e\u6df1\u5ea6\u795e\u7ecf\u7f51\u7edc\u7684\u5bf9\u8c61\u8bc6\u522b\u548c\u5b9a\u4f4d\u7b97\u6cd5\uff0c\u5176\u6700\u5927\u7684 &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[1],"tags":[5],"class_list":["post-174","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-yolo"],"_links":{"self":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/174","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=174"}],"version-history":[{"count":0,"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/174\/revisions"}],"wp:attachment":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=174"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=174"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=174"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}