{"id":1407,"date":"2022-01-05T21:43:33","date_gmt":"2022-01-05T13:43:33","guid":{"rendered":"http:\/\/139.9.1.231\/?p=1407"},"modified":"2022-01-06T09:46:19","modified_gmt":"2022-01-06T01:46:19","slug":"cyclegan","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2022\/01\/05\/cyclegan\/","title":{"rendered":"GAN\u7cfb\u5217\u4e4b CycleGAN"},"content":{"rendered":"\n

\u6458\u81ea https:\/\/zhuanlan.zhihu.com\/p\/306442363<\/p>\n\n\n\n

pixtopix\u9700\u8981\u4e00\u5bf9\u4e00\uff0c\u4e00\u4e2aimage\u5bf9\u5e94\u4e00\u4e2aimage\uff0c\u8bad\u7ec3\u96c6\u7684\u4e24\u7ec4\u56fe\u7247\u4e00\u4e00\u5bf9\u5e94\u624d\u80fd\u8bad\u7ec3<\/p>\n\n\n\n

CycleGAN\u7684\u4ecb\u7ecd<\/strong><\/p>\n\n\n\n

1.CycleGAN\u7684\u539f\u7406<\/p>\n\n\n\n

CycleGAN\uff0c\u5373\u5faa\u73af\u751f\u6210\u5bf9\u6297\u7f51\u7edc\uff0c\u51fa\u81ea\u53d1\u8868\u4e8e ICCV17 \u7684\u8bba\u6587\u300aUnpaired Image-to-Image Translation using Cycle-Consistent Adversarial Networks\u300b\uff0c\u548c\u5b83\u7684\u5144\u957fPix2Pix\uff08\u5747\u4e3a\u6731\u5927\u795e\u4f5c\u54c1\uff09\u4e00\u6837\uff0c\u7528\u4e8e\u56fe\u50cf\u98ce\u683c\u8fc1\u79fb\u4efb\u52a1\u3002\u4ee5\u524d\u7684GAN\u90fd\u662f\u5355\u5411\u751f\u6210\uff0cCycleGAN\u4e3a\u4e86\u7a81\u7834Pix2Pix\u5bf9\u6570\u636e\u96c6\u56fe\u7247\u4e00\u4e00\u5bf9\u5e94\u7684\u9650\u5236\uff0c\u91c7\u7528\u4e86\u53cc\u5411\u5faa\u73af\u751f\u6210\u7684\u7ed3\u6784\uff0c\u56e0\u6b64\u5f97\u540dCycleGAN\u3002<\/p>\n\n\n\n

\u9996\u5148\uff0cCycleGAN\u4e5f\u662f\u4e00\u4e2aGAN\u6a21\u578b\uff0c\u901a\u8fc7\u5224\u522b\u5668\u548c\u751f\u6210\u5668\u7684\u5bf9\u6297\u8bad\u7ec3\uff0c\u5b66\u4e60\u6570\u636e\u96c6\u56fe\u7247\u7684\u50cf\u7d20\u6982\u7387\u5206\u5e03\u6765\u751f\u6210\u56fe\u7247\u3002<\/p>\n\n\n\n

\u8981\u5b8c\u6210X\u57df\u5230Y\u57df\u7684\u56fe\u7247\u98ce\u683c\u8fc1\u79fb\uff0c\u5c31\u8981\u6c42GAN\u7f51\u7edc\u65e2\u8981\u62df\u5408Y\u57df\u56fe\u7247\u7684\u98ce\u683c\u5206\u5e03\u5206\u5e03\uff0c\u53c8\u8981\u4fdd\u6301X\u57df\u56fe\u7247\u5bf9\u5e94\u7684\u5185\u5bb9\u7279\u5f81\u3002\u6253\u4e2a\u6bd4\u65b9\uff0c\u7528\u8349\u56fe\u98ce\u683c\u7684\u732b\u56fe\u7247\u751f\u6210\u7167\u7247\u98ce\u683c\u7684\u732b\u56fe\u7247\u65f6\uff0c\u8981\u6c42\u751f\u6210\u7684\u732b\u54aa\u201c\u5373\u8981\u6d3b\u7075\u6d3b\u73b0\uff0c\u53c8\u8981\u59ff\u52bf\u4e0d\u53d8\u201d\u3002\u201c\u62df\u5408\u6570\u636e\u5206\u5e03\u201d\u672c\u6765\u5c31\u662fGAN\u5e72\u7684\u6d3b\u513f\uff0c\u800c\u201c\u4fdd\u6301\u539f\u56fe\u7247\u7279\u5f81\u201d\u5728Pix2Pix\u4e0a\u662f\u8fd9\u4e48\u5b9e\u73b0\u7684\uff1a<\/p>\n\n\n\n

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

\u200b<\/p>\n\n\n\n

\u56e0\u4e3aPix2Pix\u662f\u4e00\u4e2aCGAN\uff0c\u6240\u4ee5\uff0c\u6211\u4eec\u901a\u8fc7\u7528X\u57df\u56fe\u7247\u5f53\u7ea6\u675f\u6761\u4ef6\u6765\u9650\u5236Pix2Pix\u7684\u8f93\u51faY\u57df\u98ce\u683c\u56fe\u7247\u65f6\u4fdd\u6709X\u57df\u56fe\u7247\u7684\u7279\u5f81\u3002<\/p>\n\n\n\n

\u800c\u9001\u5165CycleGAN\u7684\u4e24\u7ec4\uff08X\u57dfY\u57df\uff09\u56fe\u7247\u6ca1\u6709\u4e00\u4e00\u5bf9\u5e94\u5173\u7cfb\uff0c\u5373\u4f7f\u6211\u4eec\u5c06X\u57df\u56fe\u7247\u5f53\u6210\u9650\u5236\u6761\u4ef6\u8f93\u5165\u5230\u4e00\u4e2aCGAN\u4e2d\uff0c\u4e5f\u8d77\u4e0d\u5230\u9650\u5236\u6a21\u578b\u8f93\u51fa\u4fdd\u6709X\u57df\u56fe\u7247\u7279\u5f81\u7684\u4f5c\u7528\u3002\u56e0\u4e3a\uff0c\u9001\u5165\u7684\u4e24\u7ec4\u56fe\u7247\u5b8c\u5168\u662f\u968f\u673a\u914d\u5728\u4e00\u8d77\uff0cCGAN\u5b66\u4e0d\u5230\u4efb\u4f55\u8054\u7cfb\u3002\u56e0\u6b64\uff0cCycleGAN\u91c7\u53d6\u4e86\u4e00\u4e2a\u7edd\u5999\u7684\u8bbe\u8ba1\uff1a\u901a\u8fc7\u6dfb\u52a0\u201c\u5faa\u73af\u751f\u6210\u201d\u5e76\u4f18\u5316\u4e00\u81f4\u6027\u635f\u5931\uff08Consistency Loss\uff09\u6765\u4ee3\u66ffCGAN\u4e2d\u4f7f\u7528\u7684\u7ea6\u675f\u6761\u4ef6\u6765\u9650\u5236\u751f\u6210\u5668\u4fdd\u6709\u539f\u57df\u56fe\u7247\u7279\u5f81\u3002\u8fd9\u6837\u5c31\u4e0d\u9700\u8981\u8bad\u7ec3\u96c6\u56fe\u7247\u4e00\u4e00\u5bf9\u5e94\u4e86\u3002<\/p>\n\n\n\n

2.CycleGAN\u7684\u6d41\u7a0b<\/strong><\/p>\n\n\n\n

\u4e0b\u9762\uff0c\u6211\u4eec\u5c31\u6765\u770b\u770b\u5faa\u73af\u751f\u6210\u7f51\u7edc\uff08CycleGAN\uff09\u5230\u5e95\u662f\u600e\u4e48\u201c\u5faa\u73af\u8d77\u6765\u201d\u7684\uff1a<\/p>\n\n\n\n

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

\u200b<\/p>\n\n\n\n

\u4e0a\u56fe\u5de6\u534a\u90e8\u5206\uff0c\u5c06\u539f\u57df\u56fe\u7247x\u9001\u5165\uff08x2y\u65b9\u5411\uff09\u751f\u6210\u5668G\u751f\u6210\u76ee\u6807\u57df\u56fe\u7247y^\uff0c\u7136\u540e\u518d\u5c06\u751f\u6210\u7684\u76ee\u6807\u57df\u56fe\u7247y^\u9001\u5165\uff08y2x\u65b9\u5411\uff09\u751f\u6210\u5668F\u53cd\u8fc7\u6765\u751f\u6210\u539f\u57df\u56fe\u7247x^\u3002\u751f\u6210x^\u7684\u76ee\u7684\u5c31\u662f\u7528\u5b83\u4e0e\u8f93\u5165\u7684\u771f\u56fe\u7247x\u6765\u7b97L1 Loss\u3002\u6211\u4eec\u77e5\u9053Pix2Pix\u4f18\u5316\u65f6\u9664\u4e86\u4f7f\u7528GAN Loss\uff08\u5bf9\u6297\u635f\u5931\uff09\u5916\uff0c\u8fd8\u52a0\u5165\u4e86\u751f\u6210\u5668\u8f93\u5165\u56fe\u7247\u548c\u8f93\u51fa\u56fe\u7247\u7684L1 Loss\u6765\u5bf9\u9f50\u751f\u6210\u56fe\u7247\u4e0e\u8f93\u5165\u56fe\u7247\u7684\u5b8f\u89c2\u8f6e\u5ed3\uff08\u6240\u8c13\u4f4e\u9891\u4fe1\u606f\uff09\u3002\u540c\u6837\u7684\u903b\u8f91\uff0c\u6211\u4eec\u4e5f\u80fd\u5728CycleGAN\u4e2d\u7528L1 Loss\u6765\u5bf9\u9f50\u201c\u5faa\u73af\u751f\u6210\u201d\u7684x^\u4e0e\u8f93\u5165\u7684\u539f\u56fe\u7247x\u7684\u5185\u5bb9\u81ea\u7136\uff0cx\u751f\u6210\u7684y^\u7684\u8f6e\u5ed3\u4e5f\u662f\u548cx\u5bf9\u9f50\u7684\u4e86\u3002\u8fd9\u5c31\u8fbe\u5230\u4e86\uff08\u539f\u8bba\u6587\u4e2d\u7684\u4f8b\u5b50\uff09\u201c\u9a6c\u53d8\u6591\u9a6c\uff0c\u82b1\u7eb9\u53d8\uff0c\u59ff\u52bf\u4e0d\u53d8\u201d\u7684\u76ee\u7684\u4e86\u3002\uff08\u6211\u5728\u7f51\u4e0a\u770b\u5230\u7684CycleGAN\u8d44\u6599\u90fd\u6ca1\u6709\u70b9\u660e\u8fd9\u4e00\u70b9\u7684\uff0c\u6240\u4ee5\u53ea\u597d\u81ea\u884c\u8111\u8865\uff0c\u6b22\u8fce\u6307\u6b63\u3002\uff09<\/p>\n\n\n\n

\u5728\u8fd9\u4e2ax->y^->x^\u7684\u751f\u6210\u8fc7\u7a0b\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u5224\u522b\u5668Dy\u4e0e\u751f\u6210\u5668\uff08x2y\uff09G\u8fdb\u884c\u5bf9\u6297\u8bad\u7ec3\u3002\u90a3\u4e48\u8fd9\u4e2a\u94fe\u6761\u4e0a\u7684\u53cd\u5411\u751f\u6210\u5668\uff08y2x\uff09F\u600e\u4e48\u529e\uff1f\u5f53\u7136\u662f\u52a0\u4e2a\u5224\u522b\u5668Dx\u4e0e\u5b83\u8fdb\u884c\u5bf9\u6297\u8bad\u7ec3\u4e86\u3002\u8fd9\u6837CycleGAN\u5c31\u6709\u4e86\u4e24\u4e2a\u65b9\u5411\u76f8\u53cd\u7684\u751f\u6210\u5668\uff0c\u4e24\u4e2a\u5206\u522b\u5224\u522bx\u57df\u3001y\u57df\u56fe\u7247\u7684\u5224\u522b\u5668\u3002\u4f46\u8981\u6ce8\u610f\u4e00\u4e2a\u95ee\u9898\uff1a\u5c31\u50cfGAN\u7684\u751f\u6210\u5668\u548c\u5224\u522b\u5668\u4e0d\u80fd\u540c\u65f6\u8bad\u7ec3\u4e00\u6837\uff0cCyc1eGAN\u7684\u4e24\u4e2a\u751f\u6210\u5668\u3001\u4e24\u4e2a\u5224\u522b\u5668\u4e5f\u53ea\u80fd\u4e00\u4e2a\u4e00\u4e2a\u8bad\u7ec3\uff0c\u8fd9\u5c31\u5f62\u6210\u4e86CycleGAN\u8bad\u7ec3\u7684\u4e24\u6761\u201c\u73af\u8def\u201d\u3002<\/p>\n\n\n\n

3.CycleGAN\u7684\u7ed3\u6784<\/strong><\/p>\n\n\n\n

\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u518d\u770b\u770b\u8fd9\u4e24\u5bf9\u5224\u522b\u5668\u3001\u751f\u6210\u5668\u600e\u4e48\u6446\uff1a<\/p>\n\n\n\n

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

\u200b<\/p>\n\n\n\n

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

\u200b<\/p>\n\n\n\n

\u4e0a\u534a\u90e8\u4efd\u662f\u751f\u6210\u5668G\u548c\u5224\u522b\u5668Dy\u8fdb\u884cx2y\u7684\u8bad\u7ec3\u8fc7\u7a0b\uff0c\u4e0b\u534a\u90e8\u4efd\u662f\u751f\u6210\u5668F\u548c\u5224\u522b\u5668Dx\u8fdb\u884cy2x\u7684\u8bad\u7ec3\u8fc7\u7a0b\u3002\u5f88\u50cf\u662f\u4e24\u4e2a\u98ce\u683c\u8fc1\u79fb\u65b9\u5411\u76f8\u53cdPix2Pix\u6a21\u578b\uff0c\u53ea\u662f\u8fd9\u4e24\u4e2aGAN\u662f\u666e\u901aGAN\uff0c\u4e0d\u662fPix2Pix\u90a3\u6837\u7684CGAN\u3002\u8fd9\u4e00\u70b9\uff0c\u4ece\u751f\u6210\u5668\u548c\u5224\u522b\u5668\u7684\u8f93\u5165\u5c31\u53ef\u4ee5\u770b\u51fa\u6765\uff0c\u8f93\u5165\u7684\u53ea\u6709\u539f\u57df\u56fe\u7247\u5e76\u6ca1\u6709\u50cfPix2Pix\u4e00\u6837\u878d\u5408\u6761\u4ef6\u56fe\u7247\u3002<\/p>\n\n\n\n

4.CycleGAN\u7684loss\u51fd\u6570<\/strong><\/p>\n\n\n\n

\u524d\u9762\u5206\u6790\u4e86CycleGAN\u7684\u539f\u7406\uff0c\u6211\u4eec\u5df2\u7ecf\u77e5\u9053\u4e86CycleGAN\u7684loss\u7531\u5bf9\u6297\u635f\u5931\uff08\u79f0\u4e3agan loss\u6216adversarial loss\uff09\u548c\u5faa\u73af\u4e00\u81f4\u6027\u635f\u5931\uff08consitency loss\uff09\u7ec4\u6210\uff0c\u4e0b\u9762\u770b\u770b\u516c\u5f0f\uff1a<\/p>\n\n\n\n

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

\u200b<\/p>\n\n\n\n

\u4e0a\u9762\u516c\u5f0f\u4e2d\uff1a<\/p>\n\n\n\n

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

\u200b\u6307\u7684\u662fx2y\u8fc7\u7a0b\u7684\u5bf9\u6297\u635f\u5931\uff08adversarial loss\uff09<\/p>\n\n\n\n

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

\u200b\u6307\u7684\u662fy2x\u8fc7\u7a0b\u7684\u5bf9\u6297\u635f\u5931\uff08adversarial loss\uff09<\/p>\n\n\n\n

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

\u200b\u6307\u7684\u662f\u751f\u6210\u5668G\u548c\u751f\u6210\u5668F\u7684\u5faa\u73af\u4e00\u81f4\u6027\u635f\u5931\u3002<\/p>\n\n\n\n

\u5176\u4e2d\u4e3a\u5faa\u73af\u4e00\u81f4\u6027\u635f\u5931\uff08consitency loss\uff09\u7684\u7f29\u653e\u7cfb\u6570\uff0c\u662f\u4e00\u4e2a\u8d85\u53c2\u6570\u3002<\/p>\n\n\n\n

\u5b9e\u9645\u4e0a\uff0c\u539f\u8bba\u6587\u7684\u4ee3\u7801\u8fd8\u52a0\u5165\u4e86\u672c\u4f53\u6620\u5c04\u635f\u5931\uff08identity loss\uff09\uff0c\u53ea\u662f\u9ed8\u8ba4\u8bbe\u7f6e\u4e3a\u5173\u95ed\u3002CycleGAN\u6b63\u5e38\u8bad\u7ec3\u65f6\uff0c\u751f\u6210\u5668G\u8f93\u5165x\uff0c\u751f\u6210y^\u3002\u8ba1\u7b97\u751f\u6210\u5668G\u7684\u672c\u4f53\u6620\u5c04\u635f\u5931\uff08identity loss\uff09\u65f6\uff0c\u751f\u6210\u5668G\u8f93\u5165y\uff0c\u751f\u6210y^\uff0c\u7136\u540e\u7528y\u4e0ey^\u7684L1 loss\u4f5c\u4e3aG\u7684identity loss\u3002\u76f8\u5e94\u5730\uff0c\u751f\u6210\u5668F\u7684identity loss\u5219\u662f\u8f93\u5165\u7684x\u4e0e\u751f\u6210\u7684x^\u7684L1 loss\u3002\u4f18\u5316CycleGAN\u65f6\uff0c\u5982\u679c\u542f\u7528identity loss\u5219\u5c06\u8fd9\u4e24\u90e8\u5206\u52a0\u5230\u6a21\u578b\u603bloss\u4e2d\u3002\u4e0e\u5faa\u73af\u4e00\u81f4\u6027\u635f\u5931\uff08consistency loss\uff09\u4e00\u6837\uff0c\u4e5f\u4f7f\u7528\u7f29\u653e\u7cfb\u6570\u8d85\u53c2\u63a7\u5236\u5176\u5728\u603bloss\u4e2d\u6240\u5360\u6bd4\u91cd\u3002<\/p>\n\n\n\n

\u8bba\u6587\u4e2d\u63d0\u5230\uff0cCycleGAN\u4f7f\u7528identity loss\u7684\u76ee\u7684\u662f\u5728\u8fc1\u79fb\u7684\u8fc7\u7a0b\u4e2d\u4fdd\u6301\u539f\u8272\u8c03\uff0c\u4e0b\u9762\u662f\u4f7f\u7528identity loss\u7684\u5bf9\u6bd4\u6548\u679c\uff1a<\/p>\n\n\n\n

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

\u200b<\/p>\n\n\n\n

\u4e0a\u9762\u56fe\u7247\u6700\u53f3\u8fb9\u4e00\u5217\u4f7f\u7528identity loss\u540e\u679c\u7136\u7ea0\u6b63\u4e86\u751f\u6210\u5668\u7684\u8272\u504f\u3002<\/p>\n\n\n\n

code\uff1a<\/p>\n\n\n\n

https:\/\/github.com\/eriklindernoren\/PyTorch-GAN<\/a> <\/p>\n","protected":false},"excerpt":{"rendered":"

\u6458\u81ea https:\/\/zhuanlan.zhihu.com\/p\/306442363 pixtopix\u9700\u8981\u4e00\u5bf9\u4e00 … \u7ee7\u7eed\u9605\u8bfbGAN\u7cfb\u5217\u4e4b CycleGAN<\/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],"tags":[],"_links":{"self":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/1407"}],"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=1407"}],"version-history":[{"count":3,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/1407\/revisions"}],"predecessor-version":[{"id":1410,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/1407\/revisions\/1410"}],"wp:attachment":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/media?parent=1407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/categories?post=1407"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/tags?post=1407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}