{"id":4944,"date":"2022-07-21T09:16:45","date_gmt":"2022-07-21T01:16:45","guid":{"rendered":"http:\/\/139.9.1.231\/?p=4944"},"modified":"2022-07-21T09:16:48","modified_gmt":"2022-07-21T01:16:48","slug":"anchor-based-anchor-free","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2022\/07\/21\/anchor-based-anchor-free\/","title":{"rendered":"\u76ee\u6807\u68c0\u6d4b\uff1a Anchor-based \u4e0e Anchor-free"},"content":{"rendered":"\n

\u76ee\u6807\u68c0\u6d4b\u6280\u672f\u5305\u62ecanchor-based\u548canchor-free\u4e24\u5927\u7c7b\uff1a<\/p>\n\n\n\n

1\u3001\u57fa\u4e8eanchor-based\u7684\u6280\u672f\u5305\u62ec\u4e00\u4e2a\u9636\u6bb5\u548c\u4e24\u4e2a\u9636\u6bb5\u7684\u68c0\u6d4b\u3002\u5176\u4e2d\u4e00\u9636\u6bb5\u7684\u68c0\u6d4b\u6280\u672f\u5305\u62ecSSD\uff0cDSSD\uff0cRetinaNet\uff0cRefineDet\uff0cYOLOV3\u7b49\uff0c\u4e8c\u9636\u6bb5\u6280\u672f\u5305\u62ecFaster-RCNN\uff0cR-FCN\uff0cFPN\uff0cCascade R-CNN\uff0cSNIP\u7b49\u3002\u4e00\u822c\u7684\uff0c\u4e24\u4e2a\u9636\u6bb5\u7684\u76ee\u6807\u68c0\u6d4b\u4f1a\u6bd4\u4e00\u4e2a\u9636\u6bb5\u7684\u7cbe\u5ea6\u8981\u9ad8\uff0c\u4f46\u4e00\u4e2a\u9636\u6bb5\u7684\u7b97\u6cd5\u901f\u5ea6\u4f1a\u66f4\u5feb\u3002<\/p>\n\n\n\n

\u4e8c\u6b65\u6cd5\u76f8\u5bf9\u4e8e\u4e00\u6b65\u6cd5\u6709\u4ee5\u4e0b\u51e0\u4e2a\u4f18\u52bf\uff1a<\/p>\n\n\n\n

\uff08a\uff09.\u4e8c\u9636\u6bb5\u7684\u5206\u7c7b<\/strong><\/p>\n\n\n\n

\uff08b\uff09.\u4e8c\u9636\u6bb5\u7684\u56de\u5f52<\/strong><\/p>\n\n\n\n

\uff08c\uff09.\u4e8c\u9636\u6bb5\u7684\u7279\u5f81<\/strong><\/p>\n\n\n\n

\uff08d\uff09.\u7279\u5f81\u6821\u51c6<\/strong><\/p>\n\n\n\n

\u4e3a\u4e86\u80fd\u8ba9\u4e00\u6b65\u6cd5\u4e5f\u5177\u5907\u4e8c\u6b65\u6cd5\u7684\u8fd9\u4e9b\u4e2a\u4f18\u52bf\uff0c\u63d0\u51fa\u4e86RefineDet\u3001SRN\u3001AlignDet\u7b49\u4e00\u4e9b\u5217\u68c0\u6d4b\u7b97\u6cd5\u3002<\/p>\n\n\n\n

2\u3001 anchor-free\u7684\u6280\u672f\u5305\u62ec\u57fa\u4e8eKeypoint\u4e0eSegmentation\u4e24\u7c7b\u3002\u5176\u4e2d\u57fa\u4e8eKeypoint\u6280\u672f\u5305\u62ecCornerNet\uff0cCenterNet\uff0cCornerNet-Lite\u7b49\uff0c\u57fa\u4e8eSegmentation\u7684\u6280\u672f\u5305\u62ecFSAF\uff0cFCOS\uff0cFoveaBox\u7b49\u3002<\/p>\n\n\n\n

anchor-base\u5b58\u5728\u7684\u95ee\u9898\uff1a<\/strong><\/p>\n\n\n\n

\u2022\u4e0e\u951a\u70b9\u6846\u76f8\u5173\u8d85\u53c2 (scale\u3001aspect ratio\u3001IoU Threshold) \u4f1a\u8f83\u660e\u663e\u7684\u5f71\u54cd\u6700\u7ec8\u9884\u6d4b\u6548\u679c\uff1b\uff08\u5c3a\u5ea6(scale<\/a>)\u548c\u957f\u5bbd\u6bd4( aspect ratio)\u662f\u6bd4\u8f83\u96be\u8bbe\u8ba1\u7684\u3002\u8fd9\u9700\u8981\u8f83\u5f3a\u7684\u5148\u9a8c\u77e5\u8bc6\u3002\uff09<\/p>\n\n\n\n

\u2022\u9884\u7f6e\u7684\u951a\u70b9\u5927\u5c0f\u3001\u6bd4\u4f8b\u5728\u68c0\u6d4b\u5dee\u5f02\u8f83\u5927\u7269\u4f53\u65f6\u4e0d\u591f\u7075\u6d3b\uff1b<\/p>\n\n\n\n

\u2022\u5927\u91cf\u7684\u951a\u70b9\u4f1a\u5bfc\u81f4\u8fd0\u7b97\u590d\u6742\u5ea6\u589e\u5927\uff0c\u4ea7\u751f\u7684\u53c2\u6570\u8f83\u591a\uff1b<\/p>\n\n\n\n

\u2022\u5bb9\u6613\u5bfc\u81f4\u8bad\u7ec3\u65f6negative\u4e0epositive\u7684\u6bd4\u4f8b\u5931\u8861\u3002\uff08\u5197\u4f59<\/a>\u6846\u975e\u5e38\u4e4b\u591a\uff1a\u4e00\u5f20\u56fe\u50cf\u5185\u7684\u76ee\u6807\u6bd5\u7adf\u662f\u6709\u9650\u7684\uff0c\u57fa\u4e8e\u6bcf\u4e2aanchor\u8bbe\u5b9a\u5927\u91cfanchor box\u4f1a\u4ea7\u751f\u5927\u91cf\u7684easy-sample\uff0c\u5373\u5b8c\u5168\u4e0d\u5305\u542b\u76ee\u6807\u7684\u80cc\u666f\u6846\u3002\u8fd9\u4f1a\u9020\u6210\u6b63\u8d1f\u6837\u672c\u4e25\u91cd\u4e0d\u5e73\u8861\u95ee\u9898\uff0c\u4e5f\u662fone-stage\u7b97\u6cd5\u96be\u4ee5\u8d76\u8d85two-stage\u7b97\u6cd5\u7684\u539f\u56e0\u4e4b\u4e00\u3002\uff09<\/p>\n\n\n\n

\u6b64\u5916\u57fa\u4e8eanchor box\u8fdb\u884c\u76ee\u6807\u7c7b\u522b\u5206\u7c7b\u65f6\uff0cIOU\u9608\u503c\u8d85\u53c2\u8bbe\u7f6e\u4e5f\u662f\u4e00\u4e2a\u95ee\u9898\uff0c0.5\uff1f0.7\uff1f\u6709\u540c\u5b66\u53ef\u80fd\u4e5f\u60f3\u5230\u4e86CVPR2018\u7684\u8bba\u6587Cascade R-CNN\uff0c\u4e13\u95e8\u6765\u8ba8\u8bba\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n\n\n\n

anchor-base<\/strong> \u4f18\u70b9\uff1a<\/strong><\/p>\n\n\n\n

\uff081\uff09\u4f7f\u7528anchor\u673a\u5236\u4ea7\u751f\u5bc6\u96c6\u7684anchor box\uff0c\u4f7f\u5f97\u7f51\u7edc\u53ef\u76f4\u63a5\u5728\u6b64\u57fa\u7840\u4e0a\u8fdb\u884c\u76ee\u6807\u5206\u7c7b\u53ca\u8fb9\u754c\u6846\u5750\u6807\u56de\u5f52\uff1b<\/p>\n\n\n\n

\uff082\uff09\u5bc6\u96c6\u7684anchor box\u53ef\u6709\u6548\u63d0\u9ad8\u7f51\u7edc\u76ee\u6807\u53ec\u56de\u80fd\u529b\uff0c\u5bf9\u4e8e\u5c0f\u76ee\u6807\u68c0\u6d4b\u6765\u8bf4\u63d0\u5347\u975e\u5e38\u660e\u663e\u3002<\/p>\n\n\n\n

Anchor-free\u7b97\u6cd5\u7684\u4f18\u70b9\uff1a<\/strong><\/p>\n\n\n\n

\u2022\u4f7f\u7528\u7c7b\u4f3c\u5206\u5272\u7684\u601d\u60f3\u6765\u89e3\u51b3\u76ee\u6807\u68c0\u6d4b\u95ee\u9898\uff1b<\/p>\n\n\n\n

\u2022\u4e0d\u9700\u8981\u8c03\u4f18\u4e0eanchor\u76f8\u5173\u7684\u8d85\u53c2\u6570\uff1b<\/p>\n\n\n\n

\u2022\u907f\u514d\u5927\u91cf\u8ba1\u7b97GT boxes\u548canchor boxes \u4e4b\u95f4\u7684IoU\uff0c\u4f7f\u5f97\u8bad\u7ec3\u8fc7\u7a0b\u5360\u7528\u5185\u5b58\u66f4\u4f4e\u3002<\/p>\n\n\n\n

anchor-free\u662f\u901a\u8fc7\u53e6\u5916\u4e00\u79cd\u624b\u6bb5\u6765\u89e3\u51b3\u68c0\u6d4b\u95ee\u9898\u7684\u3002\u540c\u6837\u5206\u4e3a\u4e24\u4e2a\u5b50\u95ee\u9898\uff0c\u5373\u786e\u5b9a\u7269\u4f53\u4e2d\u5fc3\u548c\u5bf9\u56db\u6761\u8fb9\u6846\u7684\u9884\u6d4b\u3002\u9884\u6d4b\u7269\u4f53\u4e2d\u5fc3\u65f6\uff0c\u5c06\u4e2d\u5fc3\u9884\u6d4b\u878d\u5165\u5230\u7c7b\u522b\u9884\u6d4b\u7684 target \u91cc\u9762\uff0c\u4e5f\u53ef\u4ee5\u9884\u6d4b\u4e00\u4e2a soft \u7684 centerness score\u3002\u5bf9\u4e8e\u56db\u6761\u8fb9\u6846\u7684\u9884\u6d4b\uff0c\u5219\u6bd4\u8f83\u4e00\u81f4\uff0c\u90fd\u662f\u9884\u6d4b\u8be5\u50cf\u7d20\u70b9\u5230 ground truth \u6846\u7684\u56db\u6761\u8fb9\u8ddd\u79bb\uff0c\u4e0d\u8fc7\u4f1a\u4f7f\u7528\u4e00\u4e9b trick \u6765\u9650\u5236 regress \u7684\u8303\u56f4\u3002<\/p>\n\n\n\n

anchor-free\u7c7b\u7b97\u6cd5\u5f52\u7eb3\uff1a<\/p>\n\n\n\n

A.\u57fa\u4e8e\u591a\u5173\u952e\u70b9\u8054\u5408\u8868\u8fbe\u7684\u65b9\u6cd5<\/p>\n\n\n\n

a.CornerNet\/CornerNet-lite\uff1a\u5de6\u4e0a\u89d2\u70b9+\u53f3\u4e0b\u89d2\u70b9<\/p>\n\n\n\n

b.ExtremeNet\uff1a\u4e0a\u4e0b\u5de6\u53f34\u4e2a\u6781\u503c\u70b9+\u4e2d\u5fc3\u70b9<\/p>\n\n\n\n

c.CenterNet:Keypoint Triplets for Object Detection\uff1a\u5de6\u4e0a\u89d2\u70b9+\u53f3\u4e0b\u89d2\u70b9+\u4e2d\u5fc3\u70b9<\/p>\n\n\n\n

d.RepPoints\uff1a9\u4e2a\u5b66\u4e60\u5230\u7684\u81ea\u9002\u5e94\u8df3\u52a8\u7684\u91c7\u6837\u70b9<\/p>\n\n\n\n

e.FoveaBox\uff1a\u4e2d\u5fc3\u70b9+\u5de6\u4e0a\u89d2\u70b9+\u53f3\u4e0b\u89d2\u70b9<\/p>\n\n\n\n

f.PLN\uff1a4\u4e2a\u89d2\u70b9+\u4e2d\u5fc3\u70b9<\/p>\n\n\n\n

B.\u57fa\u4e8e\u5355\u4e2d\u5fc3\u70b9\u9884\u6d4b\u7684\u65b9\u6cd5<\/p>\n\n\n\n

a.CenterNet:Objects as Points\uff1a\u4e2d\u5fc3\u70b9+\u5bbd\u5ea6+\u9ad8\u5ea6<\/p>\n\n\n\n

b.CSP\uff1a\u4e2d\u5fc3\u70b9+\u9ad8\u5ea6\uff08\u4f5c\u8005\u9884\u8bbe\u4e86\u76ee\u6807\u5bbd\u9ad8\u6bd4\u56fa\u5b9a\uff0c\u6839\u636e\u9ad8\u5ea6\u8ba1\u7b97\u51fa\u5bbd\u5ea6\uff09<\/p>\n\n\n\n

c.FCOS\uff1a\u4e2d\u5fc3\u70b9+\u5230\u6846\u76842\u4e2a\u8ddd\u79bb<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

\u76ee\u6807\u68c0\u6d4b\u6280\u672f\u5305\u62ecanchor-based\u548canchor-free\u4e24\u5927\u7c7b\uff1a 1\u3001\u57fa\u4e8eanchor-based\u7684\u6280 … \u7ee7\u7eed\u9605\u8bfb\u76ee\u6807\u68c0\u6d4b\uff1a Anchor-based \u4e0e Anchor-free<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[9],"tags":[],"_links":{"self":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/4944"}],"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=4944"}],"version-history":[{"count":8,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/4944\/revisions"}],"predecessor-version":[{"id":4952,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/4944\/revisions\/4952"}],"wp:attachment":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/media?parent=4944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/categories?post=4944"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/tags?post=4944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}