{"id":993,"date":"2021-12-31T15:32:54","date_gmt":"2021-12-31T07:32:54","guid":{"rendered":"http:\/\/139.9.1.231\/?p=993"},"modified":"2022-08-29T16:15:52","modified_gmt":"2022-08-29T08:15:52","slug":"yolov2","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2021\/12\/31\/yolov2\/","title":{"rendered":"YOLO\u7cfb\u5217\uff08\u4e09\uff09\uff1ayolov2"},"content":{"rendered":"\n<p> yolov2\u5c5e\u4e8e\u4e00\u9636\u6bb5\u3001<strong>anchor-based\u00a0\u76ee\u6807\u68c0\u6d4b<\/strong> <\/p>\n\n\n\n<p>         YOLOv2\u7684\u8bba\u6587\u5168\u540d\u4e3a<a rel=\"noreferrer noopener\" href=\"https:\/\/arxiv.org\/abs\/1612.08242\" target=\"_blank\">YOLO9000: Better, Faster, Stronger<\/a>\uff0c\u5b83\u65a9\u83b7\u4e86CVPR 2017 Best Paper Honorable Mention\u3002\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u4f5c\u8005\u9996\u5148\u5728YOLOv1\u7684\u57fa\u7840\u4e0a\u63d0\u51fa\u4e86\u6539\u8fdb\u7684YOLOv2\uff0c\u7136\u540e\u63d0\u51fa\u4e86\u4e00\u79cd\u68c0\u6d4b\u4e0e\u5206\u7c7b\u8054\u5408\u8bad\u7ec3\u65b9\u6cd5\uff0c\u4f7f\u7528\u8fd9\u79cd\u8054\u5408\u8bad\u7ec3\u65b9\u6cd5\u5728COCO\u68c0\u6d4b\u6570\u636e\u96c6\u548cImageNet\u5206\u7c7b\u6570\u636e\u96c6\u4e0a\u8bad\u7ec3\u51fa\u4e86YOLO9000\u6a21\u578b\uff0c\u5176\u53ef\u4ee5\u68c0\u6d4b\u8d85\u8fc79000\u591a\u7c7b\u7269\u4f53\u3002\u6240\u4ee5\uff0c\u8fd9\u7bc7\u6587\u7ae0\u5176\u5b9e\u5305\u542b\u4e24\u4e2a\u6a21\u578b\uff1aYOLOv2\u548cYOLO9000\uff0c\u4e0d\u8fc7\u540e\u8005\u662f\u5728\u524d\u8005\u57fa\u7840\u4e0a\u63d0\u51fa\u7684\uff0c\u4e24\u8005\u6a21\u578b\u4e3b\u4f53\u7ed3\u6784\u662f\u4e00\u81f4\u7684\u3002YOLOv2\u76f8\u6bd4YOLOv1\u505a\u4e86\u5f88\u591a\u65b9\u9762\u7684\u6539\u8fdb\uff0c\u8fd9\u4e5f\u4f7f\u5f97YOLOv2\u7684mAP\u6709\u663e\u7740\u7684\u63d0\u5347\uff0c\u5e76\u4e14YOLOv2\u7684\u901f\u5ea6\u4f9d\u7136\u5f88\u5feb\uff0c\u4fdd\u6301\u7740\u81ea\u5df1\u4f5c\u4e3aone-stage\u65b9\u6cd5\u7684\u4f18\u52bf.<\/p>\n\n\n\n<p>        Yolov2\u548cYolo9000\u7b97\u6cd5\u5185\u6838\u76f8\u540c\uff0c\u533a\u522b\u662f\u8bad\u7ec3\u65b9\u5f0f\u4e0d\u540c\uff1aYolov2\u7528coco\u6570\u636e\u96c6\u8bad\u7ec3\u540e\uff0c\u53ef\u4ee5\u8bc6\u522b80\u4e2a\u79cd\u7c7b\u3002\u800cYolo9000\u53ef\u4ee5\u4f7f\u7528coco\u6570\u636e\u96c6 + ImageNet\u6570\u636e\u96c6\u8054\u5408\u8bad\u7ec3\uff0c\u53ef\u4ee5\u8bc6\u522b9000\u591a\u4e2a\u79cd\u7c7b\u3002<\/p>\n\n\n\n<h2>YOLOv2\u7684\u6539\u8fdb\u7b56\u7565<\/h2>\n\n\n\n<p>       YOLOv1\u867d\u7136\u68c0\u6d4b\u901f\u5ea6\u5f88\u5feb\uff0c\u4f46\u662f\u5728\u68c0\u6d4b\u7cbe\u5ea6\u4e0a\u5374\u4e0d\u5982R-CNN\u7cfb\u68c0\u6d4b\u65b9\u6cd5\uff0cYOLOv1\u5728\u7269\u4f53\u5b9a\u4f4d\u65b9\u9762\uff08localization\uff09\u4e0d\u591f\u51c6\u786e\uff0c\u5e76\u4e14\u53ec\u56de\u7387\uff08recall\uff09\u8f83\u4f4e\u3002YOLOv2\u5171\u63d0\u51fa\u4e86\u51e0\u79cd\u6539\u8fdb\u7b56\u7565\u6765\u63d0\u5347YOLO\u6a21\u578b\u7684\u5b9a\u4f4d\u51c6\u786e\u5ea6\u548c\u53ec\u56de\u7387\uff0c\u4ece\u800c\u63d0\u9ad8mAP\uff0cYOLOv2\u5728\u6539\u8fdb\u4e2d\u9075\u5faa\u4e00\u4e2a\u539f\u5219\uff1a\u4fdd\u6301\u68c0\u6d4b\u901f\u5ea6\uff0c\u8fd9\u4e5f\u662fYOLO\u6a21\u578b\u7684\u4e00\u5927\u4f18\u52bf\u3002YOLOv2\u7684\u6539\u8fdb\u7b56\u7565\u5982\u56fe2\u6240\u793a\uff0c\u53ef\u4ee5\u770b\u51fa\uff0c\u5927\u90e8\u5206\u7684\u6539\u8fdb\u65b9\u6cd5\u90fd\u53ef\u4ee5\u6bd4\u8f83\u663e\u7740\u63d0\u5347\u6a21\u578b\u7684mAP\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-default\"><img loading=\"lazy\" width=\"952\" height=\"397\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2021\/12\/v2-8f48ba80f887fd5b26bd4211cf740c39_r.jpg\" alt=\"\" class=\"wp-image-1040\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2021\/12\/v2-8f48ba80f887fd5b26bd4211cf740c39_r.jpg 952w, http:\/\/139.9.1.231\/wp-content\/uploads\/2021\/12\/v2-8f48ba80f887fd5b26bd4211cf740c39_r-300x125.jpg 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2021\/12\/v2-8f48ba80f887fd5b26bd4211cf740c39_r-768x320.jpg 768w\" sizes=\"(max-width: 952px) 100vw, 952px\" \/><\/figure>\n\n\n\n<p><strong>Batch Normalization<\/strong><\/p>\n\n\n\n<p>Batch Normalization\u53ef\u4ee5\u63d0\u5347\u6a21\u578b\u6536\u655b\u901f\u5ea6\uff0c\u800c\u4e14\u53ef\u4ee5\u8d77\u5230\u4e00\u5b9a\u6b63\u5219\u5316\u6548\u679c\uff0c\u964d\u4f4e\u6a21\u578b\u7684\u8fc7\u62df\u5408\u3002\u5728YOLOv2\u4e2d\uff0c\u6bcf\u4e2a\u5377\u79ef\u5c42\u540e\u9762\u90fd\u6dfb\u52a0\u4e86Batch Normalization\u5c42\uff0c\u5e76\u4e14\u4e0d\u518d\u4f7f\u7528droput\u3002\u4f7f\u7528Batch Normalization\u540e\uff0cYOLOv2\u7684mAP\u63d0\u5347\u4e862.4%\u3002<\/p>\n\n\n\n<p><strong>High Resolution Classifier<\/strong>:<\/p>\n\n\n\n<p>\u76ee\u524d\u5927\u90e8\u5206\u7684\u68c0\u6d4b\u6a21\u578b\u90fd\u4f1a\u5728\u5148\u5728ImageNet\u5206\u7c7b\u6570\u636e\u96c6\u4e0a\u9884\u8bad\u7ec3\u6a21\u578b\u7684\u4e3b\u4f53\u90e8\u5206\uff08CNN\u7279\u5f81\u63d0\u53d6\u5668\uff09\uff0c\u7531\u4e8e\u5386\u53f2\u539f\u56e0\uff0cImageNet\u5206\u7c7b\u6a21\u578b\u57fa\u672c\u91c7\u7528\u5927\u5c0f\u4e3a&nbsp;224*224\u7684\u56fe\u7247\u4f5c\u4e3a\u8f93\u5165\uff0c\u5206\u8fa8\u7387\u76f8\u5bf9\u8f83\u4f4e\uff0c\u4e0d\u5229\u4e8e\u68c0\u6d4b\u6a21\u578b\u3002\u6240\u4ee5YOLOv1\u5728\u91c7\u7528&nbsp;224*224 \u5206\u7c7b\u6a21\u578b\u9884\u8bad\u7ec3\u540e\uff0c\u5c06\u5206\u8fa8\u7387\u589e\u52a0\u81f3&nbsp;448*448\uff0c\u5e76\u4f7f\u7528\u8fd9\u4e2a\u9ad8\u5206\u8fa8\u7387\u5728\u68c0\u6d4b\u6570\u636e\u96c6\u4e0afinetune\u3002\u4f46\u662f\u76f4\u63a5\u5207\u6362\u5206\u8fa8\u7387\uff0c\u68c0\u6d4b\u6a21\u578b\u53ef\u80fd\u96be\u4ee5\u5feb\u901f\u9002\u5e94\u9ad8\u5206\u8fa8\u7387\u3002\u6240\u4ee5YOLOv2\u589e\u52a0\u4e86\u5728ImageNet\u6570\u636e\u96c6\u4e0a\u4f7f\u7528448*448\u8f93\u5165\u6765finetune\u5206\u7c7b\u7f51\u7edc\u8fd9\u4e00\u4e2d\u95f4\u8fc7\u7a0b\uff0810 epochs\uff09\uff0c\u8fd9\u53ef\u4ee5\u4f7f\u5f97\u6a21\u578b\u5728\u68c0\u6d4b\u6570\u636e\u96c6\u4e0afinetune\u4e4b\u524d\u5df2\u7ecf\u9002\u7528\u9ad8\u5206\u8fa8\u7387\u8f93\u5165\u3002\u4f7f\u7528\u9ad8\u5206\u8fa8\u7387\u5206\u7c7b\u5668\u540e\uff0cYOLOv2\u7684mAP\u63d0\u5347\u4e86\u7ea64%\u3002<\/p>\n\n\n\n<p><strong>Convolutional With Anchor Boxes<\/strong>:\u5728YOLOv1\u4e2d\uff0c\u8f93\u5165\u56fe\u7247\u6700\u7ec8\u88ab\u5212\u5206\u4e3a7*7\u7f51\u683c\uff0c\u6bcf\u4e2a\u5355\u5143\u683c\u9884\u6d4b2\u4e2a\u8fb9\u754c\u6846\u3002YOLOv1\u6700\u540e\u91c7\u7528\u7684\u662f\u5168\u8fde\u63a5\u5c42\u76f4\u63a5\u5bf9\u8fb9\u754c\u6846\u8fdb\u884c\u9884\u6d4b\uff0c\u5176\u4e2d\u8fb9\u754c\u6846\u7684\u5bbd\u4e0e\u9ad8\u662f\u76f8\u5bf9\u6574\u5f20\u56fe\u7247\u5927\u5c0f\u7684\uff0c\u800c\u7531\u4e8e\u5404\u4e2a\u56fe\u7247\u4e2d\u5b58\u5728\u4e0d\u540c\u5c3a\u5ea6\u548c\u957f\u5bbd\u6bd4\uff08scales and ratios\uff09\u7684\u7269\u4f53\uff0cYOLOv1\u5728\u8bad\u7ec3\u8fc7\u7a0b\u4e2d\u5b66\u4e60\u9002\u5e94\u4e0d\u540c\u7269\u4f53\u7684\u5f62\u72b6\u662f\u6bd4\u8f83\u56f0\u96be\u7684\uff0c\u8fd9\u4e5f\u5bfc\u81f4YOLOv1\u5728\u7cbe\u786e\u5b9a\u4f4d\u65b9\u9762\u8868\u73b0\u8f83\u5dee\u3002YOLOv2\u501f\u9274\u4e86Faster R-CNN\u4e2dRPN\u7f51\u7edc\u7684\u5148\u9a8c\u6846\uff08anchor boxes\uff0cprior boxes\uff0cSSD\u4e5f\u91c7\u7528\u4e86\u5148\u9a8c\u6846\uff09\u7b56\u7565\u3002RPN\u5bf9CNN\u7279\u5f81\u63d0\u53d6\u5668\u5f97\u5230\u7684\u7279\u5f81\u56fe\uff08feature map\uff09\u8fdb\u884c\u5377\u79ef\u6765\u9884\u6d4b\u6bcf\u4e2a\u4f4d\u7f6e\u7684\u8fb9\u754c\u6846\u4ee5\u53ca\u7f6e\u4fe1\u5ea6\uff08\u662f\u5426\u542b\u6709\u7269\u4f53\uff09\uff0c\u5e76\u4e14\u5404\u4e2a\u4f4d\u7f6e\u8bbe\u7f6e\u4e0d\u540c\u5c3a\u5ea6\u548c\u6bd4\u4f8b\u7684\u5148\u9a8c\u6846\uff0c\u6240\u4ee5RPN\u9884\u6d4b\u7684\u662f\u8fb9\u754c\u6846\u76f8\u5bf9\u4e8e\u5148\u9a8c\u6846\u7684offsets\u503c\uff08\u5176\u5b9e\u662ftransform\u503c\uff0c\u8be6\u7ec6\u89c1<a rel=\"noreferrer noopener\" href=\"https:\/\/arxiv.org\/abs\/1506.01497\" target=\"_blank\">Faster R_CNN\u8bba\u6587<\/a>\uff09\uff0c\u91c7\u7528\u5148\u9a8c\u6846\u4f7f\u5f97\u6a21\u578b\u66f4\u5bb9\u6613\u5b66\u4e60\u3002\u6240\u4ee5YOLOv2\u79fb\u9664\u4e86YOLOv1\u4e2d\u7684\u5168\u8fde\u63a5\u5c42\u800c\u91c7\u7528\u4e86\u5377\u79ef\u548canchor boxes\u6765\u9884\u6d4b\u8fb9\u754c\u6846\u3002\u4e3a\u4e86\u4f7f\u68c0\u6d4b\u6240\u7528\u7684\u7279\u5f81\u56fe\u5206\u8fa8\u7387\u66f4\u9ad8\uff0c\u79fb\u9664\u5176\u4e2d\u7684\u4e00\u4e2apool\u5c42\u3002\u5728\u68c0\u6d4b\u6a21\u578b\u4e2d\uff0cYOLOv2\u4e0d\u662f\u91c7\u7528448*448\u56fe\u7247\u4f5c\u4e3a\u8f93\u5165\uff0c\u800c\u662f\u91c7\u7528416*416\u5927\u5c0f\u3002\u56e0\u4e3aYOLOv2\u6a21\u578b\u4e0b\u91c7\u6837\u7684\u603b\u6b65\u957f\u4e3a32\uff0c\u5bf9\u4e8e 416*416 \u5927\u5c0f\u7684\u56fe\u7247\uff0c\u6700\u7ec8\u5f97\u5230\u7684\u7279\u5f81\u56fe\u5927\u5c0f\u4e3a&nbsp;13*13\uff0c\u7ef4\u5ea6\u662f\u5947\u6570\uff0c\u8fd9\u6837\u7279\u5f81\u56fe\u6070\u597d\u53ea\u6709\u4e00\u4e2a\u4e2d\u5fc3\u4f4d\u7f6e\u3002\u5bf9\u4e8e\u4e00\u4e9b\u5927\u7269\u4f53\uff0c\u5b83\u4eec\u4e2d\u5fc3\u70b9\u5f80\u5f80\u843d\u5165\u56fe\u7247\u4e2d\u5fc3\u4f4d\u7f6e\uff0c\u6b64\u65f6\u4f7f\u7528\u7279\u5f81\u56fe\u7684\u4e00\u4e2a\u4e2d\u5fc3\u70b9\u53bb\u9884\u6d4b\u8fd9\u4e9b\u7269\u4f53\u7684\u8fb9\u754c\u6846\u76f8\u5bf9\u5bb9\u6613\u4e9b\u3002\u6240\u4ee5\u5728YOLOv2\u8bbe\u8ba1\u4e2d\u8981\u4fdd\u8bc1\u6700\u7ec8\u7684\u7279\u5f81\u56fe\u6709\u5947\u6570\u4e2a\u4f4d\u7f6e\u3002\u5bf9\u4e8eYOLOv1\uff0c\u6bcf\u4e2acell\u90fd\u9884\u6d4b2\u4e2aboxes\uff0c\u6bcf\u4e2aboxes\u5305\u542b5\u4e2a\u503c\uff1a&nbsp;\uff08x,y,w,h,c\uff09,\u524d4\u4e2a\u503c\u662f\u8fb9\u754c\u6846\u4f4d\u7f6e\u4e0e\u5927\u5c0f\uff0c\u6700\u540e\u4e00\u4e2a\u503c\u662f\u7f6e\u4fe1\u5ea6\uff08confidence scores\uff0c\u5305\u542b\u4e24\u90e8\u5206\uff1a\u542b\u6709\u7269\u4f53\u7684\u6982\u7387\u4ee5\u53ca\u9884\u6d4b\u6846\u4e0eground truth\u7684IOU\uff09\u3002\u4f46\u662f\u6bcf\u4e2acell\u53ea\u9884\u6d4b\u4e00\u5957\u5206\u7c7b\u6982\u7387\u503c\uff08class predictions\uff0c\u5176\u5b9e\u662f\u7f6e\u4fe1\u5ea6\u4e0b\u7684\u6761\u4ef6\u6982\u7387\u503c\uff09,\u4f9b2\u4e2aboxes\u5171\u4eab\u3002YOLOv2\u4f7f\u7528\u4e86anchor boxes\u4e4b\u540e\uff0c\u6bcf\u4e2a\u4f4d\u7f6e\u7684\u5404\u4e2aanchor box\u90fd\u5355\u72ec\u9884\u6d4b\u4e00\u5957\u5206\u7c7b\u6982\u7387\u503c\uff0c\u8fd9\u548cSSD\u6bd4\u8f83\u7c7b\u4f3c\uff08\u4f46SSD\u6ca1\u6709\u9884\u6d4b\u7f6e\u4fe1\u5ea6\uff0c\u800c\u662f\u628abackground\u4f5c\u4e3a\u4e00\u4e2a\u7c7b\u522b\u6765\u5904\u7406\uff09\u3002\u4f7f\u7528anchor boxes\u4e4b\u540e\uff0cYOLOv2\u7684mAP\u6709\u7a0d\u5fae\u4e0b\u964d\uff08\u8fd9\u91cc\u4e0b\u964d\u7684\u539f\u56e0\uff0c\u6211\u731c\u60f3\u662fYOLOv2\u867d\u7136\u4f7f\u7528\u4e86anchor boxes\uff0c\u4f46\u662f\u4f9d\u7136\u91c7\u7528YOLOv1\u7684\u8bad\u7ec3\u65b9\u6cd5YOLOv1\u53ea\u80fd\u9884\u6d4b98\u4e2a\u8fb9\u754c\u6846\uff08&nbsp;7*7*2&nbsp;\uff09\uff0c\u800cYOLOv2\u4f7f\u7528anchor boxes\u4e4b\u540e\u53ef\u4ee5\u9884\u6d4b\u4e0a\u5343\u4e2a\u8fb9\u754c\u6846\uff0813*13*num_anchors\uff09\u3002\u6240\u4ee5\u4f7f\u7528anchor boxes\u4e4b\u540e\uff0cYOLOv2\u7684\u53ec\u56de\u7387\u5927\u5927\u63d0\u5347\uff0c\u7531\u539f\u6765\u768481%\u5347\u81f388%\u3002<\/p>\n\n\n\n<p><strong>Dimension Clusters<\/strong><\/p>\n\n\n\n<p>\u5728Faster R-CNN\u548cSSD\u4e2d\uff0c\u5148\u9a8c\u6846\u7684\u7ef4\u5ea6\uff08\u957f\u548c\u5bbd\uff09\u90fd\u662f\u624b\u52a8\u8bbe\u5b9a\u7684\uff0c\u5e26\u6709\u4e00\u5b9a\u7684\u4e3b\u89c2\u6027\u3002\u5982\u679c\u9009\u53d6\u7684\u5148\u9a8c\u6846\u7ef4\u5ea6\u6bd4\u8f83\u5408\u9002\uff0c\u90a3\u4e48\u6a21\u578b\u66f4\u5bb9\u6613\u5b66\u4e60\uff0c\u4ece\u800c\u505a\u51fa\u66f4\u597d\u7684\u9884\u6d4b\u3002\u56e0\u6b64\uff0cYOLOv2\u91c7\u7528k-means\u805a\u7c7b\u65b9\u6cd5\u5bf9\u8bad\u7ec3\u96c6\u4e2d\u7684\u8fb9\u754c\u6846\u505a\u4e86\u805a\u7c7b\u5206\u6790\u3002\u56e0\u4e3a\u8bbe\u7f6e\u5148\u9a8c\u6846\u7684\u4e3b\u8981\u76ee\u7684\u662f\u4e3a\u4e86\u4f7f\u5f97\u9884\u6d4b\u6846\u4e0eground truth\u7684IOU\u66f4\u597d\uff0c\u6240\u4ee5\u805a\u7c7b\u5206\u6790\u65f6\u9009\u7528box\u4e0e\u805a\u7c7b\u4e2d\u5fc3box\u4e4b\u95f4\u7684IOU\u503c\u4f5c\u4e3a\u8ddd\u79bb\u6307\u6807\uff1a<\/p>\n\n\n\n<p>$$<br>d(\\text { box }, \\text { centroid })=1-I O U(\\text { box }, \\text { centroid })<br>$$<\/p>\n\n\n\n<p>\u4e0b\u56fe\u4e3a\u5728VOC\u548cCOCO\u6570\u636e\u96c6\u4e0a\u7684\u805a\u7c7b\u5206\u6790\u7ed3\u679c\uff0c\u968f\u7740\u805a\u7c7b\u4e2d\u5fc3\u6570\u76ee\u7684\u589e\u52a0\uff0c\u5e73\u5747IOU\u503c\uff08\u5404\u4e2a\u8fb9\u754c\u6846\u4e0e\u805a\u7c7b\u4e2d\u5fc3\u7684IOU\u7684\u5e73\u5747\u503c\uff09\u662f\u589e\u52a0\u7684\uff0c\u4f46\u662f\u7efc\u5408\u8003\u8651\u6a21\u578b\u590d\u6742\u5ea6\u548c\u53ec\u56de\u7387\uff0c\u4f5c\u8005\u6700\u7ec8\u9009\u53d65\u4e2a\u805a\u7c7b\u4e2d\u5fc3\u4f5c\u4e3a\u5148\u9a8c\u6846\uff0c\u5176\u76f8\u5bf9\u4e8e\u56fe\u7247\u7684\u5927\u5c0f\u5982\u53f3\u8fb9\u56fe\u6240\u793a\u3002\u5bf9\u4e8e\u4e24\u4e2a\u6570\u636e\u96c6\uff0c5\u4e2a\u5148\u9a8c\u6846\u7684width\u548cheight\u5982\u4e0b\u6240\u793a\uff08\u6765\u6e90\uff1aYOLO\u6e90\u7801\u7684<a rel=\"noreferrer noopener\" href=\"https:\/\/github.com\/pjreddie\/darknet\/tree\/master\/cfg\" target=\"_blank\">cfg\u6587\u4ef6<\/a>\uff09\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>COCO: (0.57273, 0.677385), (1.87446, 2.06253), (3.33843, 5.47434), (7.88282, 3.52778), (9.77052, 9.16828)<br>VOC: (1.3221, 1.73145), (3.19275, 4.00944), (5.05587, 8.09892), (9.47112, 4.84053), (11.2364, 10.0071)<\/p><\/blockquote>\n\n\n\n<p>\u4f46\u662f\u8fd9\u91cc\u5148\u9a8c\u6846\u7684\u5927\u5c0f\u5177\u4f53\u6307\u4ec0\u4e48\u4f5c\u8005\u5e76\u6ca1\u6709\u8bf4\u660e\uff0c\u4f46\u80af\u5b9a\u4e0d\u662f\u50cf\u7d20\u70b9\uff0c\u4ece\u4ee3\u7801\u5b9e\u73b0\u4e0a\u770b\uff0c\u5e94\u8be5\u662f\u76f8\u5bf9\u4e8e\u9884\u6d4b\u7684\u7279\u5f81\u56fe\u5927\u5c0f\uff08&nbsp;<img src=\"https:\/\/www.zhihu.com\/equation?tex=13%5Ctimes13\" alt=\"[\u516c\u5f0f]\">&nbsp;\uff09\u3002\u5bf9\u6bd4\u4e24\u4e2a\u6570\u636e\u96c6\uff0c\u4e5f\u53ef\u4ee5\u770b\u5230COCO\u6570\u636e\u96c6\u4e0a\u7684\u7269\u4f53\u76f8\u5bf9\u5c0f\u70b9\u3002\u8fd9\u4e2a\u7b56\u7565\u4f5c\u8005\u5e76\u6ca1\u6709\u5355\u72ec\u505a\u5b9e\u9a8c\uff0c\u4f46\u662f\u4f5c\u8005\u5bf9\u6bd4\u4e86\u91c7\u7528\u805a\u7c7b\u5206\u6790\u5f97\u5230\u7684\u5148\u9a8c\u6846\u4e0e\u624b\u52a8\u8bbe\u7f6e\u7684\u5148\u9a8c\u6846\u5728\u5e73\u5747IOU\u4e0a\u7684\u5dee\u5f02\uff0c\u53d1\u73b0\u524d\u8005\u7684\u5e73\u5747IOU\u503c\u66f4\u9ad8\uff0c\u56e0\u6b64\u6a21\u578b\u66f4\u5bb9\u6613\u8bad\u7ec3\u5b66\u4e60\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img src=\"https:\/\/pic3.zhimg.com\/v2-0c6e54419d7fb2ffada1aa7ac9540c7e_r.jpg\" alt=\"\"\/><figcaption>\u56fe3\uff1a\u6570\u636e\u96c6VOC\u548cCOCO\u4e0a\u7684\u8fb9\u754c\u6846\u805a\u7c7b\u5206\u6790\u7ed3\u679c<\/figcaption><\/figure>\n\n\n\n<p><strong>New Network: Darknet-19<\/strong><\/p>\n\n\n\n<p>YOLOv2\u91c7\u7528\u4e86\u4e00\u4e2a\u65b0\u7684\u57fa\u7840\u6a21\u578b\uff08\u7279\u5f81\u63d0\u53d6\u5668\uff09\uff0c\u79f0\u4e3aDarknet-19\uff0c\u5305\u62ec19\u4e2a\u5377\u79ef\u5c42\u548c5\u4e2amaxpooling\u5c42\uff0c\u5982\u56fe4\u6240\u793a\u3002Darknet-19\u4e0eVGG16\u6a21\u578b\u8bbe\u8ba1\u539f\u5219\u662f\u4e00\u81f4\u7684\uff0c\u4e3b\u8981\u91c7\u75283*3\u5377\u79ef\uff0c\u91c7\u75282*2\u7684maxpooling\u5c42\u4e4b\u540e\uff0c\u7279\u5f81\u56fe\u7ef4\u5ea6\u964d\u4f4e2\u500d\uff0c\u800c\u540c\u65f6\u5c06\u7279\u5f81\u56fe\u7684channles\u589e\u52a0\u4e24\u500d\u3002\u4e0eNIN(<a rel=\"noreferrer noopener\" href=\"https:\/\/arxiv.org\/abs\/1312.4400\" target=\"_blank\">Network in Network<\/a>)\u7c7b\u4f3c\uff0cDarknet-19\u6700\u7ec8\u91c7\u7528global avgpooling\u505a\u9884\u6d4b\uff0c\u5e76\u4e14\u57283*3\u5377\u79ef\u4e4b\u95f4\u4f7f\u75281*1\u5377\u79ef\u6765\u538b\u7f29\u7279\u5f81\u56fechannles\u4ee5\u964d\u4f4e\u6a21\u578b\u8ba1\u7b97\u91cf\u548c\u53c2\u6570\u3002Darknet-19\u6bcf\u4e2a\u5377\u79ef\u5c42\u540e\u9762\u540c\u6837\u4f7f\u7528\u4e86batch norm\u5c42\u4ee5\u52a0\u5feb\u6536\u655b\u901f\u5ea6\uff0c\u964d\u4f4e\u6a21\u578b\u8fc7\u62df\u5408\u3002\u5728ImageNet\u5206\u7c7b\u6570\u636e\u96c6\u4e0a\uff0cDarknet-19\u7684top-1\u51c6\u786e\u5ea6\u4e3a72.9%\uff0ctop-5\u51c6\u786e\u5ea6\u4e3a91.2%\uff0c\u4f46\u662f\u6a21\u578b\u53c2\u6570\u76f8\u5bf9\u5c0f\u4e00\u4e9b\u3002\u4f7f\u7528Darknet-19\u4e4b\u540e\uff0cYOLOv2\u7684mAP\u503c\u6ca1\u6709\u663e\u7740\u63d0\u5347\uff0c\u4f46\u662f\u8ba1\u7b97\u91cf\u5374\u53ef\u4ee5\u51cf\u5c11\u7ea633%\u3002<\/p>\n\n\n\n<p><strong>Direct location prediction<\/strong>\uff1a<\/p>\n\n\n\n<p>\u6cbf\u7528YOLOv1\u7684\u65b9\u6cd5\uff0c\u5c31\u662f\u9884\u6d4b\u8fb9\u754c\u6846\u4e2d\u5fc3\u70b9\u76f8\u5bf9\u4e8e\u5bf9\u5e94cell\u5de6\u4e0a\u89d2\u4f4d\u7f6e\u7684\u76f8\u5bf9\u504f\u79fb\u503c\uff0c\u4e3a\u4e86\u5c06\u8fb9\u754c\u6846\u4e2d\u5fc3\u70b9\u7ea6\u675f\u5728\u5f53\u524dcell\u4e2d\uff0c\u4f7f\u7528sigmoid\u51fd\u6570\u5904\u7406\u504f\u79fb\u503c\uff0c\u8fd9\u6837\u9884\u6d4b\u7684\u504f\u79fb\u503c\u5728(0,1)\u8303\u56f4\u5185\uff08\u6bcf\u4e2acell\u7684\u5c3a\u5ea6\u770b\u505a1\uff09\u3002<\/p>\n\n\n\n<p><strong>Fine-Grained Features<\/strong>  \u66f4\u7cbe\u7ec6\u7684\u7279\u5f81\u56fe <\/p>\n\n\n\n<p>YOLOv2\u7684\u8f93\u5165\u56fe\u7247\u5927\u5c0f\u4e3a 416*416 \uff0c\u7ecf\u8fc75\u6b21maxpooling\u4e4b\u540e\u5f97\u5230 13*13 \u5927\u5c0f\u7684\u7279\u5f81\u56fe\uff0c\u5e76\u4ee5\u6b64\u7279\u5f81\u56fe\u91c7\u7528\u5377\u79ef\u505a\u9884\u6d4b\u300213*13\u5927\u5c0f\u7684\u7279\u5f81\u56fe\u5bf9\u68c0\u6d4b\u5927\u7269\u4f53\u662f\u8db3\u591f\u4e86\uff0c\u4f46\u662f\u5bf9\u4e8e\u5c0f\u7269\u4f53\u8fd8\u9700\u8981\u66f4\u7cbe\u7ec6\u7684\u7279\u5f81\u56fe\uff08Fine-Grained Features\uff09\u3002\u56e0\u6b64SSD\u4f7f\u7528\u4e86\u591a\u5c3a\u5ea6\u7684\u7279\u5f81\u56fe\u6765\u5206\u522b\u68c0\u6d4b\u4e0d\u540c\u5927\u5c0f\u7684\u7269\u4f53\uff0c\u524d\u9762\u66f4\u7cbe\u7ec6\u7684\u7279\u5f81\u56fe\u53ef\u4ee5\u7528\u6765\u9884\u6d4b\u5c0f\u7269\u4f53\u3002YOLOv2\u63d0\u51fa\u4e86\u4e00\u79cdpassthrough\u5c42\u6765\u5229\u7528\u66f4\u7cbe\u7ec6\u7684\u7279\u5f81\u56fe\u3002YOLOv2\u6240\u5229\u7528\u7684Fine-Grained Features\u662f26*26\u5927\u5c0f\u7684\u7279\u5f81\u56fe\uff08\u6700\u540e\u4e00\u4e2amaxpooling\u5c42\u7684\u8f93\u5165\uff09\uff0c\u5bf9\u4e8eDarknet-19\u6a21\u578b\u6765\u8bf4\u5c31\u662f\u5927\u5c0f\u4e3a 26*26*512 \u7684\u7279\u5f81\u56fe\u3002passthrough\u5c42\u4e0eResNet\u7f51\u7edc\u7684shortcut\u7c7b\u4f3c\uff0c\u4ee5\u524d\u9762\u66f4\u9ad8\u5206\u8fa8\u7387\u7684\u7279\u5f81\u56fe\u4e3a\u8f93\u5165\uff0c\u7136\u540e\u5c06\u5176\u8fde\u63a5\u5230\u540e\u9762\u7684\u4f4e\u5206\u8fa8\u7387\u7279\u5f81\u56fe\u4e0a\u3002\u524d\u9762\u7684\u7279\u5f81\u56fe\u7ef4\u5ea6\u662f\u540e\u9762\u7684\u7279\u5f81\u56fe\u76842\u500d\uff0cpassthrough\u5c42\u62bd\u53d6\u524d\u9762\u5c42\u7684\u6bcf\u4e2a 2*2\u7684\u5c40\u90e8\u533a\u57df\uff0c\u7136\u540e\u5c06\u5176\u8f6c\u5316\u4e3achannel\u7ef4\u5ea6\uff0c\u5bf9\u4e8e [ 26*26*512 ] \u7684\u7279\u5f81\u56fe\uff0c\u7ecfpassthrough\u5c42\u5904\u7406\u4e4b\u540e\u5c31\u53d8\u6210\u4e86 [13*13*2048] \u7684\u65b0\u7279\u5f81\u56fe\uff08\u7279\u5f81\u56fe\u5927\u5c0f\u964d\u4f4e4\u500d\uff0c\u800cchannles\u589e\u52a04\u500d\uff0c\u4e0b\u56fe\u4e3a\u4e00\u4e2a\u5b9e\u4f8b\uff09\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u4e0e\u540e\u9762\u7684 [13*13*1024] \u7279\u5f81\u56fe\u8fde\u63a5\u5728\u4e00\u8d77\u5f62\u6210 13*13*3072\u5927\u5c0f\u7684\u7279\u5f81\u56fe\uff0c\u7136\u540e\u5728\u6b64\u7279\u5f81\u56fe\u57fa\u7840\u4e0a\u5377\u79ef\u505a\u9884\u6d4b\u3002\u5728YOLO\u7684C\u6e90\u7801\u4e2d\uff0cpassthrough\u5c42\u79f0\u4e3areorg layer\u3002\u5728TensorFlow\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528tf.extract_image_patches\u6216\u8005tf.space_to_depth\u6765\u5b9e\u73b0passthrough\u5c42<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img src=\"https:\/\/pic3.zhimg.com\/v2-c94c787a81c1216d8963f7c173c6f086_r.jpg\" alt=\"\"\/><figcaption>passthrough\u5c42\u5b9e\u4f8b<\/figcaption><\/figure>\n\n\n\n<p><strong>Multi-Scale Training<\/strong><\/p>\n\n\n\n<p>\u91c7\u7528Multi-Scale Training\u7b56\u7565\uff0cYOLOv2\u53ef\u4ee5\u9002\u5e94\u4e0d\u540c\u5927\u5c0f\u7684\u56fe\u7247\uff0c\u5e76\u4e14\u9884\u6d4b\u51fa\u5f88\u597d\u7684\u7ed3\u679c\u3002\u5728\u6d4b\u8bd5\u65f6\uff0cYOLOv2\u53ef\u4ee5\u91c7\u7528\u4e0d\u540c\u5927\u5c0f\u7684\u56fe\u7247\u4f5c\u4e3a\u8f93\u5165\uff0c\u5728VOC 2007\u6570\u636e\u96c6\u4e0a\u7684\u6548\u679c\u5982\u4e0b\u56fe\u6240\u793a\u3002\u53ef\u4ee5\u770b\u5230\u91c7\u7528\u8f83\u5c0f\u5206\u8fa8\u7387\u65f6\uff0cYOLOv2\u7684mAP\u503c\u7565\u4f4e\uff0c\u4f46\u662f\u901f\u5ea6\u66f4\u5feb\uff0c\u800c\u91c7\u7528\u9ad8\u5206\u8fa8\u8f93\u5165\u65f6\uff0cmAP\u503c\u66f4\u9ad8\uff0c\u4f46\u662f\u901f\u5ea6\u7565\u6709\u4e0b\u964d\uff0c\u5bf9\u4e8e&nbsp;544*544\uff0cmAP\u9ad8\u8fbe78.6%\u3002\u6ce8\u610f\uff0c\u8fd9\u53ea\u662f\u6d4b\u8bd5\u65f6\u8f93\u5165\u56fe\u7247\u5927\u5c0f\u4e0d\u540c\uff0c\u800c\u5b9e\u9645\u4e0a\u7528\u7684\u662f\u540c\u4e00\u4e2a\u6a21\u578b\uff08\u91c7\u7528Multi-Scale Training\u8bad\u7ec3\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-default\"><img loading=\"lazy\" width=\"657\" height=\"388\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2021\/12\/v2-71f001caa2968d5fb9196250d80f7b82_r.jpg\" alt=\"\" class=\"wp-image-1058\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2021\/12\/v2-71f001caa2968d5fb9196250d80f7b82_r.jpg 657w, http:\/\/139.9.1.231\/wp-content\/uploads\/2021\/12\/v2-71f001caa2968d5fb9196250d80f7b82_r-300x177.jpg 300w\" sizes=\"(max-width: 657px) 100vw, 657px\" \/><\/figure>\n\n\n\n<h2>YOLO9000<\/h2>\n\n\n\n<p>        YOLO9000\u662f\u5728YOLOv2\u7684\u57fa\u7840\u4e0a\u63d0\u51fa\u7684\u4e00\u79cd\u53ef\u4ee5\u68c0\u6d4b\u8d85\u8fc79000\u4e2a\u7c7b\u522b\u7684\u6a21\u578b\uff0c\u5176\u4e3b\u8981\u8d21\u732e\u70b9\u5728\u4e8e\u63d0\u51fa\u4e86\u4e00\u79cd<strong>\u5206\u7c7b\u548c\u68c0\u6d4b\u7684\u8054\u5408\u8bad\u7ec3\u7b56\u7565<\/strong>\u3002\u4f17\u591a\u5468\u77e5\uff0c\u68c0\u6d4b\u6570\u636e\u96c6\u7684\u6807\u6ce8\u8981\u6bd4\u5206\u7c7b\u6570\u636e\u96c6\u6253\u6807\u7b7e\u7e41\u7410\u7684\u591a\uff0c\u6240\u4ee5ImageNet\u5206\u7c7b\u6570\u636e\u96c6\u6bd4VOC\u7b49\u68c0\u6d4b\u6570\u636e\u96c6\u9ad8\u51fa\u51e0\u4e2a\u6570\u91cf\u7ea7\u3002\u5728YOLO\u4e2d\uff0c\u8fb9\u754c\u6846\u7684\u9884\u6d4b\u5176\u5b9e\u5e76\u4e0d\u4f9d\u8d56\u4e8e\u7269\u4f53\u7684\u6807\u7b7e\uff0c\u6240\u4ee5YOLO\u53ef\u4ee5\u5b9e\u73b0\u5728\u5206\u7c7b\u548c\u68c0\u6d4b\u6570\u636e\u96c6\u4e0a\u7684\u8054\u5408\u8bad\u7ec3\u3002\u5bf9\u4e8e\u68c0\u6d4b\u6570\u636e\u96c6\uff0c\u53ef\u4ee5\u7528\u6765\u5b66\u4e60\u9884\u6d4b\u7269\u4f53\u7684\u8fb9\u754c\u6846\u3001\u7f6e\u4fe1\u5ea6\u4ee5\u53ca\u4e3a\u7269\u4f53\u5206\u7c7b\uff0c\u800c\u5bf9\u4e8e\u5206\u7c7b\u6570\u636e\u96c6\u53ef\u4ee5\u4ec5\u7528\u6765\u5b66\u4e60\u5206\u7c7b\uff0c\u4f46\u662f\u5176\u53ef\u4ee5\u5927\u5927\u6269\u5145\u6a21\u578b\u6240\u80fd\u68c0\u6d4b\u7684\u7269\u4f53\u79cd\u7c7b\u3002<\/p>\n\n\n\n<p>      \u4f5c\u8005\u9009\u62e9\u5728COCO\u548cImageNet\u6570\u636e\u96c6\u4e0a\u8fdb\u884c\u8054\u5408\u8bad\u7ec3\uff0c\u4f46\u662f\u9047\u5230\u7684\u7b2c\u4e00\u95ee\u9898\u662f\u4e24\u8005\u7684\u7c7b\u522b\u5e76\u4e0d\u662f\u5b8c\u5168\u4e92\u65a5\u7684\uff0c\u6bd4\u5982&#8221;Norfolk terrier&#8221;\u660e\u663e\u5c5e\u4e8e&#8221;dog&#8221;\uff0c\u6240\u4ee5\u4f5c\u8005\u63d0\u51fa\u4e86\u4e00\u79cd\u5c42\u7ea7\u5206\u7c7b\u65b9\u6cd5\uff08Hierarchical classification\uff09\uff0c\u4e3b\u8981\u601d\u8def\u662f\u6839\u636e\u5404\u4e2a\u7c7b\u522b\u4e4b\u95f4\u7684\u4ece\u5c5e\u5173\u7cfb\uff08\u6839\u636eWordNet\uff09\u5efa\u7acb\u4e00\u79cd\u6811\u7ed3\u6784WordTree<\/p>\n\n\n\n<div class=\"wp-block-image is-style-default\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" width=\"580\" height=\"603\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2021\/12\/v2-bda21cf48f8127c48fede60d81c4d97e_r.jpg\" alt=\"\" class=\"wp-image-1062\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2021\/12\/v2-bda21cf48f8127c48fede60d81c4d97e_r.jpg 580w, http:\/\/139.9.1.231\/wp-content\/uploads\/2021\/12\/v2-bda21cf48f8127c48fede60d81c4d97e_r-289x300.jpg 289w\" sizes=\"(max-width: 580px) 100vw, 580px\" \/><\/figure><\/div>\n\n\n\n<p>WordTree\u4e2d\u7684\u6839\u8282\u70b9\u4e3a&#8221;physical object&#8221;\uff0c\u6bcf\u4e2a\u8282\u70b9\u7684\u5b50\u8282\u70b9\u90fd\u5c5e\u4e8e\u540c\u4e00\u5b50\u7c7b\uff0c\u53ef\u4ee5\u5bf9\u5b83\u4eec\u8fdb\u884csoftmax\u5904\u7406\u3002\u5728\u7ed9\u51fa\u67d0\u4e2a\u7c7b\u522b\u7684\u9884\u6d4b\u6982\u7387\u65f6\uff0c\u9700\u8981\u627e\u5230\u5176\u6240\u5728\u7684\u4f4d\u7f6e\uff0c\u904d\u5386\u8fd9\u4e2apath\uff0c\u7136\u540e\u8ba1\u7b97path\u4e0a\u5404\u4e2a\u8282\u70b9\u7684\u6982\u7387\u4e4b\u79ef\u3002<\/p>\n\n\n\n<div class=\"wp-block-image is-style-default\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" width=\"573\" height=\"467\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2021\/12\/v2-311fbb6f571ab8889c850671a42a94f8_r.jpg\" alt=\"\" class=\"wp-image-1063\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2021\/12\/v2-311fbb6f571ab8889c850671a42a94f8_r.jpg 573w, http:\/\/139.9.1.231\/wp-content\/uploads\/2021\/12\/v2-311fbb6f571ab8889c850671a42a94f8_r-300x245.jpg 300w\" sizes=\"(max-width: 573px) 100vw, 573px\" \/><\/figure><\/div>\n\n\n\n<p>\u5728\u8bad\u7ec3\u65f6\uff0c\u5982\u679c\u662f\u68c0\u6d4b\u6837\u672c\uff0c\u6309\u7167YOLOv2\u7684loss\u8ba1\u7b97\u8bef\u5dee\uff0c\u800c\u5bf9\u4e8e\u5206\u7c7b\u6837\u672c\uff0c\u53ea\u8ba1\u7b97\u5206\u7c7b\u8bef\u5dee\u3002\u5728\u9884\u6d4b\u65f6\uff0cYOLOv2\u7ed9\u51fa\u7684\u7f6e\u4fe1\u5ea6\u5c31\u662f&nbsp;<img src=\"https:\/\/www.zhihu.com\/equation?tex=Pr%28physical+%5Cspace+object%29\" alt=\"[\u516c\u5f0f]\">&nbsp;\uff0c\u540c\u65f6\u4f1a\u7ed9\u51fa\u8fb9\u754c\u6846\u4f4d\u7f6e\u4ee5\u53ca\u4e00\u4e2a\u6811\u72b6\u6982\u7387\u56fe\u3002\u5728\u8fd9\u4e2a\u6982\u7387\u56fe\u4e2d\u627e\u5230\u6982\u7387\u6700\u9ad8\u7684\u8def\u5f84\uff0c\u5f53\u8fbe\u5230\u67d0\u4e00\u4e2a\u9608\u503c\u65f6\u505c\u6b62\uff0c\u5c31\u7528\u5f53\u524d\u8282\u70b9\u8868\u793a\u9884\u6d4b\u7684\u7c7b\u522b\u3002<\/p>\n\n\n\n<p>\u901a\u8fc7\u8054\u5408\u8bad\u7ec3\u7b56\u7565\uff0cYOLO9000\u53ef\u4ee5\u5feb\u901f\u68c0\u6d4b\u51fa\u8d85\u8fc79000\u4e2a\u7c7b\u522b\u7684\u7269\u4f53\uff0c\u603b\u4f53mAP\u503c\u4e3a19,7%\u3002\u6211\u89c9\u5f97\u8fd9\u662f\u4f5c\u8005\u5728\u8fd9\u7bc7\u8bba\u6587\u4f5c\u51fa\u7684\u6700\u5927\u7684\u8d21\u732e\uff0c\u56e0\u4e3aYOLOv2\u7684\u6539\u8fdb\u7b56\u7565\u4eae\u70b9\u5e76\u4e0d\u662f\u5f88\u7a81\u51fa\uff0c\u4f46\u662fYOLO9000\u7b97\u662f\u5f00\u521b\u4e4b\u4e3e\u3002<\/p>\n\n\n\n<p>reference\uff1a<\/p>\n\n\n\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/35325884\">https:\/\/zhuanlan.zhihu.com\/p\/35325884<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>yolov2\u5c5e\u4e8e\u4e00\u9636\u6bb5\u3001anchor-based\u00a0\u76ee\u6807\u68c0\u6d4b YOLOv2\u7684\u8bba\u6587\u5168\u540d\u4e3aYOLO9000: Bet &hellip; <a href=\"http:\/\/139.9.1.231\/index.php\/2021\/12\/31\/yolov2\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">YOLO\u7cfb\u5217\uff08\u4e09\uff09\uff1ayolov2<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,12,9],"tags":[],"_links":{"self":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/993"}],"collection":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/comments?post=993"}],"version-history":[{"count":25,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/993\/revisions"}],"predecessor-version":[{"id":6752,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/993\/revisions\/6752"}],"wp:attachment":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/media?parent=993"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/categories?post=993"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/tags?post=993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}