{"id":4984,"date":"2022-07-21T19:29:15","date_gmt":"2022-07-21T11:29:15","guid":{"rendered":"http:\/\/139.9.1.231\/?p=4984"},"modified":"2022-07-24T15:10:58","modified_gmt":"2022-07-24T07:10:58","slug":"yolo-yolov7","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2022\/07\/21\/yolo-yolov7\/","title":{"rendered":"Yolo \u7cfb\u5217\u4e4b Yolov7 \u57fa\u7840\u7f51\u7edc\u7ed3\u6784"},"content":{"rendered":"\n

YOLOV7 \u6574\u4f53\u7ed3\u6784<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u6211\u4eec\u5148\u6574\u4f53\u6765\u770b\u4e0b YOLOV7\uff0c\u9996\u5148\u5bf9\u8f93\u5165\u7684\u56fe\u7247 resize \u4e3a 640×640 \u5927\u5c0f\uff0c\u8f93\u5165\u5230 backbone \u7f51\u7edc\u4e2d\uff0c\u7136\u540e\u7ecf head \u5c42\u7f51\u7edc\u8f93\u51fa\u4e09\u5c42\u4e0d\u540c size \u5927\u5c0f\u7684 feature map<\/strong>\uff0c\u7ecf\u8fc7 Rep \u548c conv\u8f93\u51fa\u9884\u6d4b\u7ed3\u679c\uff0c\u8fd9\u91cc\u4ee5 coco \u4e3a\u4f8b\u5b50\uff0c\u8f93\u51fa\u4e3a 80 \u4e2a\u7c7b\u522b\uff0c\u7136\u540e\u6bcf\u4e2a\u8f93\u51fa(x ,y, w, h, o) \u5373\u5750\u6807\u4f4d\u7f6e\u548c\u524d\u540e\u80cc\u666f\uff0c3 \u662f\u6307\u7684 anchor \u6570\u91cf\uff0c\u56e0\u6b64\u6bcf\u4e00\u5c42\u7684\u8f93\u51fa\u4e3a (80+5)x3 = 255\u518d\u4e58\u4e0a feature map \u7684\u5927\u5c0f\u5c31\u662f\u6700\u7ec8\u7684\u8f93\u51fa\u4e86\u3002<\/p>\n\n\n\n

  1. backbone
    YOLOV7 \u7684 backbone \u5982\u4e0b\u56fe\u6240\u793a<\/li><\/ol>\n\n\n\n
    \"\"<\/figure>\n\n\n\n

    \u603b\u5171\u6709 50 \u5c42, \u6211\u5728\u4e0a\u56fe\u7528\u9ed1\u8272\u6570\u5b57\u628a\u5173\u952e\u5c42\u6570\u6807\u793a\u51fa\u6765\u4e86\u3002 \u9996\u5148\u662f\u7ecf\u8fc7 4 \u5c42\u5377\u79ef\u5c42\uff0c\u5982\u4e0b\u56fe\uff0cCBS \u4e3b\u8981\u662f Conv + BN + SiLU \u6784\u6210\uff0c\u6211\u5728\u56fe\u4e2d\u7528\u4e0d\u540c\u7684\u989c\u8272\u8868\u793a\u4e0d\u540c\u7684 size \u548c stride, \u5982 (3, 2) \u8868\u793a\u5377\u79ef\u6838\u5927\u5c0f\u4e3a 3 \uff0c\u6b65\u957f\u4e3a 2\u3002 \u5728 config \u4e2d\u7684\u914d\u7f6e\u5982\u56fe\u3002<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    \u7ecf\u8fc7 4\u4e2a CBS \u540e\uff0c\u7279\u5f81\u56fe\u53d8\u4e3a 160 * 160 * 128 \u5927\u5c0f\u3002\u968f\u540e\u4f1a\u7ecf\u8fc7\u8bba\u6587\u4e2d\u63d0\u51fa\u7684 ELAN \u6a21\u5757\uff0cELAN \u7531\u591a\u4e2a CBS \u6784\u6210\uff0c\u5176\u8f93\u5165\u8f93\u51fa\u7279\u5f81\u5927\u5c0f\u4fdd\u6301\u4e0d\u53d8\uff0c\u901a\u9053\u6570\u5728\u5f00\u59cb\u7684\u4e24\u4e2a CBS \u4f1a\u6709\u53d8\u5316\uff0c \u540e\u9762\u7684\u51e0\u4e2a\u8f93\u5165\u901a\u9053\u90fd\u662f\u548c\u8f93\u51fa\u901a\u9053\u4fdd\u6301\u4e00\u81f4\u7684\uff0c\u7ecf\u8fc7\u6700\u540e\u4e00\u4e2a CBS \u8f93\u51fa\u4e3a\u9700\u8981\u7684\u901a\u9053\u3002<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    MP \u5c42 \u4e3b\u8981\u662f\u5206\u4e3a Maxpool \u548c CBS , \u5176\u4e2d MP1 \u548c MP2 \u4e3b\u8981\u662f\u901a\u9053\u6570\u7684\u6bd4\u53d8\u5316\u3002<\/p>\n\n\n\n

    \n\n\n\n
    \"\"<\/figure><\/div>\n\n\n\n

    backbone\u7684\u57fa\u672c\u7ec4\u4ef6\u5c31\u4ecb\u7ecd\u5b8c\u4e86\uff0c\u6211\u4eec\u6574\u4f53\u6765\u770b\u4e0b backbone\uff0c\u7ecf\u8fc7 4 \u4e2a CBS \u540e\uff0c\u63a5\u5165\u4f8b\u5982\u4e00\u4e2a ELAN \uff0c\u7136\u540e\u540e\u9762\u5c31\u662f\u4e09\u4e2a MP + ELAN \u7684\u8f93\u51fa\uff0c\u5bf9\u5e94\u7684\u5c31\u662f C3\/C4\/C5 \u7684\u8f93\u51fa\uff0c\u5927\u5c0f\u5206\u522b\u4e3a 80 * 80 * 512 \uff0c 40 * 40 * 1024\uff0c 20 * 20 * 1024\u3002 \u6bcf\u4e00\u4e2a MP \u7531 5 \u5c42\uff0c ELAN \u6709 8 \u5c42\uff0c \u6240\u4ee5\u6574\u4e2a backbone \u7684\u5c42\u6570\u4e3a 4 + 8 + 13 * 3 = 51 \u5c42\uff0c \u4ece 0 \u5f00\u59cb\u7684\u8bdd\uff0c\u6700\u540e\u4e00\u5c42\u5c31\u662f\u7b2c50\u5c42\u3002<\/p>\n\n\n\n

    3\u3001head<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n
    \"\"<\/figure>\n\n\n\n

    YOLOV7 head \u5176\u5b9e\u5c31\u662f\u4e00\u4e2a pafpn<\/strong> \u7684\u7ed3\u6784\uff0c\u548c\u4e4b\u524d\u7684YOLOV4\uff0cYOLOV5 \u4e00\u6837\u3002\u9996\u5148\uff0c\u5bf9\u4e8e backbone \u6700\u540e\u8f93\u51fa\u7684 32 \u500d\u964d\u91c7\u6837\u7279\u5f81\u56fe C5\uff0c\u7136\u540e\u7ecf\u8fc7 SPPCSP\uff0c\u901a\u9053\u6570\u4ece1024\u53d8\u4e3a512\u3002\u5148\u6309\u7167 top down \u548c C4\u3001C3\u878d\u5408\uff0c\u5f97\u5230 P3\u3001P4 \u548c P5\uff1b\u518d\u6309 bottom-up \u53bb\u548c P4\u3001P5 \u505a\u878d\u5408\u3002\u8fd9\u91cc\u57fa\u672c\u548c YOLOV5 \u662f\u4e00\u6837\u7684\uff0c\u533a\u522b\u5728\u4e8e\u5c06 YOLOV5 \u4e2d\u7684 CSP \u6a21\u5757\u6362\u6210\u4e86 ELAN-H \u6a21\u5757\uff0c \u540c\u65f6\u4e0b\u91c7\u6837\u53d8\u4e3a\u4e86 MP2 \u5c42\u3002 ELAN-H \u6a21\u5757\u662f\u6211\u81ea\u5df1\u547d\u540d\u7684\uff0c\u5b83\u548c backbone \u4e2d\u7684 ELAN \u7a0d\u5fae\u6709\u70b9\u533a\u522b\u5c31\u662f cat \u7684\u6570\u91cf\u4e0d\u540c\u3002<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    \u5bf9\u4e8e pafpn<\/strong> \u8f93\u51fa\u7684 P3\u3001P4 \u548c P5 \uff0c \u7ecf\u8fc7 RepConv \u8c03\u6574\u901a\u9053\u6570\uff0c\u6700\u540e\u4f7f\u7528 1×1 \u5377\u79ef\u53bb\u9884\u6d4b objectness\u3001class \u548c bbox \u4e09\u90e8\u5206\u3002 RepConv \u5728\u8bad\u7ec3\u548c\u63a8\u7406\u662f\u6709\u4e00\u5b9a\u7684\u533a\u522b\u3002\u8bad\u7ec3\u65f6\u6709\u4e09\u4e2a\u5206\u652f\u7684\u76f8\u52a0\u8f93\u51fa\uff0c\u90e8\u7f72\u65f6\u4f1a\u5c06\u5206\u652f\u7684\u53c2\u6570\u91cd\u53c2\u6570\u5316\u5230\u4e3b\u5206\u652f\u4e0a<\/p>\n\n\n\n

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

    YOLOV7 \u6574\u4f53\u7ed3\u6784 \u6211\u4eec\u5148\u6574\u4f53\u6765\u770b\u4e0b YOLOV7\uff0c\u9996\u5148\u5bf9\u8f93\u5165\u7684\u56fe\u7247 resize \u4e3a 640× … \u7ee7\u7eed\u9605\u8bfbYolo \u7cfb\u5217\u4e4b Yolov7 \u57fa\u7840\u7f51\u7edc\u7ed3\u6784<\/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\/4984"}],"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=4984"}],"version-history":[{"count":4,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/4984\/revisions"}],"predecessor-version":[{"id":5030,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/4984\/revisions\/5030"}],"wp:attachment":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/media?parent=4984"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/categories?post=4984"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/tags?post=4984"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}