{"id":5974,"date":"2022-08-22T16:09:09","date_gmt":"2022-08-22T08:09:09","guid":{"rendered":"http:\/\/139.9.1.231\/?p=5974"},"modified":"2022-08-22T16:09:10","modified_gmt":"2022-08-22T08:09:10","slug":"srgan","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2022\/08\/22\/srgan\/","title":{"rendered":"SRGAN &#8212;\u4f7f\u7528GAN\u8fdb\u884c\u56fe\u50cf\u9ad8\u5206\u8fa8\u7684\u5f00\u5c71\u4e4b\u4f5c"},"content":{"rendered":"\n<p>\u8bba\u6587\uff1a <a rel=\"noreferrer noopener\" href=\"https:\/\/arxiv.org\/abs\/1609.04802\" target=\"_blank\">https:\/\/arxiv.org\/abs\/1609.04802<\/a>\uff08CVPR 2017\uff09<\/p>\n\n\n\n<p><strong>\u8fd9\u7bc7\u6587\u7ae0\u7b2c\u4e00\u6b21\u5c06\u5c06\u751f\u6210\u5bf9\u6297\u7f51\u7edc\u7528\u5728\u4e86\u89e3\u51b3\u8d85\u5206\u8fa8\u7387\u95ee\u9898\u4e0a\u3002<\/strong>\u5c06GAN\u5f15\u5165SR\u9886\u57df<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"295\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-255-1024x295.png\" alt=\"\" class=\"wp-image-5977\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-255-1024x295.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-255-300x87.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-255-768x221.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-255.png 1290w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>    \u4e4b\u524d\u8d85\u5206\u7684\u7814\u7a76\u867d\u7136\u4e3b\u8981\u805a\u7126\u4e8e\u201c\u6062\u590d\u7ec6\u7c92\u5ea6\u7684\u7eb9\u7406\u7ec6\u8282\u201d\u8fd9\u4e2a\u95ee\u9898\u4e0a\uff0c\u4f46\u5c06\u95ee\u9898\u4e00\u76f4\u56fa\u5b9a\u5728<strong>\u6700\u5927\u5316\u5cf0\u503c\u4fe1\u566a\u6bd4(Peak Signal-to-Noise Ratio, PSNR)<\/strong>\u4e0a\uff0c\u7b49\u4ef7\u4e8e \u6700\u5c0f\u5316\u4e0eGT\u56fe\u50cf\u7684\u5747\u65b9\u91cd\u5efa\u8bef\u5dee(mean squared reconstruction error, MSE)\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-256.png\" alt=\"\" class=\"wp-image-5982\" width=\"469\" height=\"87\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-256.png 729w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-256-300x56.png 300w\" sizes=\"(max-width: 469px) 100vw, 469px\" \/><\/figure><\/div>\n\n\n\n<p>\u800c\u8fd9\u4e5f\u5c31\u5bfc\u81f4\uff1a<\/p>\n\n\n\n<ol class=\"has-light-pink-background-color has-background\"><li><strong>\u9ad8\u9891\u7ec6\u8282(high-frequency details)<\/strong>&nbsp;\u7684\u4e22\u5931\uff0c\u6574\u4f53\u56fe\u50cf\u8fc7\u4e8e\u5e73\u6ed1\/\u6a21\u7cca\uff1b<\/li><li>\u4e0e\u4eba\u7684\u89c6\u89c9<strong>\u611f\u77e5\u4e0d\u4e00\u81f4<\/strong>\uff0c\u8d85\u5206\u56fe\u50cf\u7684\u7cbe\u786e\u6027\u4e0e\u4eba\u7684\u671f\u671b\u4e0d\u5339\u914d\uff08\u4eba\u53ef\u80fd\u66f4\u5173\u6ce8\u524d\u666f\uff0c\u800c\u5bf9\u80cc\u666f\u6e05\u6670\u5ea6\u8981\u6c42\u4e0d\u9ad8\uff09\u3002<\/li><\/ol>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" width=\"434\" height=\"433\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-257.png\" alt=\"\" class=\"wp-image-5987\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-257.png 434w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-257-300x300.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-257-150x150.png 150w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-257-120x120.png 120w\" sizes=\"(max-width: 434px) 100vw, 434px\" \/><figcaption>\u4e2d\u95f4\u84dd\u8272\u6846\u662f\u57fa\u4e8eMSE\u6240\u5b66\u5230\u7684\u8d85\u5206\u56fe\u50cf\u6240\u5728\u50cf\u7d20\u7a7a\u95f4\uff0c\u7ea2\u8272\u6846\u662f\u771f\u5b9e\u8d85\u5206\u56fe\u50cf\u6240\u5728\u7684\u50cf\u7d20\u7a7a\u95f4\u6d41\u5f62\uff0c\u57fa\u4e8eGAN\u7684\u65b9\u6cd5\u9a71\u52a8\u91cd\u6784\u56fe\u50cf\u5f80\u771f\u5b9e\u56fe\u50cf\u50cf\u7d20\u6d41\u5f62\u533a\u57df\u9760\u8fd1\uff0c\u4ece\u800c\u611f\u77e5\u4e0a\u66f4\u771f\u5b9e\u53ef\u4fe1<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"has-light-pink-background-color has-background\">\u4ece\u800c\u63d0\u51fa3\u4e2a\u6539\u8fdb\uff1a<\/p>\n\n\n\n<ol><li>\u65b0\u7684backbone\uff1aSRResNet\uff1b<\/li><li>GAN-based network \u53ca \u65b0\u7684\u635f\u5931\u51fd\u6570\uff1a<\/li><li>adversarial loss\uff1a\u63d0\u5347<strong>\u771f\u5b9e\u611f<\/strong>(photo-realistic natural images)\uff1b<\/li><li>content loss\uff1a\u83b7\u53d6HR image\u548c\u751f\u6210\u56fe\u50cf\u7684<strong>\u611f\u77e5\u76f8\u4f3c\u6027(perceptual similarity)<\/strong>\uff0c\u800c\u4e0d\u53ea\u662f\u50cf\u7d20\u7ea7\u76f8\u4f3c\u6027(pixel similarity)\uff1b\u6216\u8005\u8bf4\u7279\u5f81\u7a7a\u95f4\u7684\u76f8\u4f3c\u6027\u800c\u4e0d\u662f\u50cf\u7d20\u7a7a\u95f4\u7684\u76f8\u4f3c\u6027\u3002<\/li><li>\u4f7f\u7528\u4e3b\u89c2\u8bc4\u4f30\u624b\u6bb5\uff1aMOS\uff0c\u66f4\u52a0\u5f3a\u8c03\u4eba\u7684\u611f\u77e5\u3002<\/li><\/ol>\n\n\n\n<h2>SRGAN\u7b97\u6cd5\u6539\u8fdb\u7ec6\u8282\uff1a<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"954\" height=\"535\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-258.png\" alt=\"\" class=\"wp-image-5993\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-258.png 954w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-258-300x168.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-258-768x431.png 768w\" sizes=\"(max-width: 954px) 100vw, 954px\" \/><figcaption>\u751f\u6210\u7f51\u7edc\u662f\u65b0\u7684\u7ed3\u6784SRResNet\uff08\u6a2a\u8de8\u4e3b\u5e72\u7f51\u7edc\u7684skip connection\u64cd\u4f5c\u5f88\u5173\u952e\uff09\uff0c\u5377\u79ef\u6838\u5c3a\u5bf8k\uff0c\u8f93\u51fa\u901a\u9053\u6570n\uff0c\u6b65\u957fs\u3002\u5934\u90e8\u540e\u7eed\u63a5\u4e86\u4e24\u4e2a\u8f93\u51fa\u901a\u9053\u6570\u4e3a256=64*4\u7684\u5377\u79ef\u5757\uff0c\u56e0\u4e3a\u5176\u4e2dPixelShuffle*2\u4f1a\u5c06feature map\u8f6c\u5316 (64, H*2, W*2)\u7684\u8f93\u51fa\uff08sub-pixel convolution\u64cd\u4f5c\uff09\uff0c\u8fd9\u6837\u603b\u5171upscale *4<\/figcaption><\/figure>\n\n\n\n<ul><li><strong>SRResNet\u548cGAN-based Network<\/strong><\/li><\/ul>\n\n\n\n<p>\u4e0a\u56fe\u5c31\u662f\u65b0\u7684\u7f51\u7edc\u7ed3\u6784\uff0cG\u7f51\u7edc\u662fSRResNet\uff0c\u8bba\u6587\u4f7f\u7528\u4e8616\u4e2aresidual blocks\uff1bD\u7f51\u7edc\u4e3a8\u6b21\u5377\u79ef\u64cd\u4f5c\uff084\u6b21\u6b65\u957f\u4e3a2\uff09+2\u6b21\u5168\u8fde\u63a5\u5c42\u7684VGG\u7f51\u7edc\u3002<\/p>\n\n\n\n<p><strong>\u635f\u5931\u51fd\u6570<\/strong>\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-259.png\" alt=\"\" class=\"wp-image-5998\" width=\"566\" height=\"381\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-259.png 816w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-259-300x203.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-259-768x519.png 768w\" sizes=\"(max-width: 566px) 100vw, 566px\" \/><\/figure><\/div>\n\n\n\n<p>\u751f\u6210\u7f51\u7edc\u7684\u635f\u5931\u51fd\u6570\u4e3a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"783\" height=\"173\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-260.png\" alt=\"\" class=\"wp-image-6000\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-260.png 783w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-260-300x66.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-260-768x170.png 768w\" sizes=\"(max-width: 783px) 100vw, 783px\" \/><\/figure>\n\n\n\n<p>\u5305\u542b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"832\" height=\"185\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-261.png\" alt=\"\" class=\"wp-image-6002\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-261.png 832w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-261-300x67.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-261-768x171.png 768w\" sizes=\"(max-width: 832px) 100vw, 832px\" \/><\/figure>\n\n\n\n<p>\u8bba\u6587\u5bf9VGG\u9ad8\u5c42\u7279\u5f81\u548c\u4f4e\u5c42\u7279\u5f81\u5206\u522b\u505a\u4e86\u5b9e\u9a8c\uff0c\u6700\u7ec8\u9009\u62e9\u53ef\u80fd\u5173\u6ce8\u66f4\u591a\u56fe\u50cf\u5185\u5bb9\u7684\u9ad8\u5c42\u7279\u5f81\u4f5c\u4e3a\u8bba\u6587\u5b9e\u9a8c\u7684\u635f\u5931\u7279\u5f81\u56fe\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" width=\"601\" height=\"259\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-265.png\" alt=\"\" class=\"wp-image-6015\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-265.png 601w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-265-300x129.png 300w\" sizes=\"(max-width: 601px) 100vw, 601px\" \/><\/figure><\/div>\n\n\n\n<p>\u5224\u522b\u7f51\u7edc\u7684\u635f\u5931\u51fd\u6570\u4e3a\u4e8c\u5206\u7c7b\u4ea4\u53c9\u71b5\u635f\u5931\u51fd\u6570\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"788\" height=\"86\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-262.png\" alt=\"\" class=\"wp-image-6006\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-262.png 788w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-262-300x33.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-262-768x84.png 768w\" sizes=\"(max-width: 788px) 100vw, 788px\" \/><\/figure>\n\n\n\n<h3 id=\"h_151762231_4\">SRGAN\u5b9e\u9a8c\u8bbe\u7f6e<\/h3>\n\n\n\n<p>\u4f7f\u7528\u6570\u636e\u96c6Set5\uff0cSet14\uff0cBSD100\uff0cBSD300\u6d4b\u8bd5\u96c6\u5bf9\u8bad\u7ec3\u6a21\u578b\u8fdb\u884c\u5b9e\u9a8c\u8bc4\u4f30\uff1a\u00a04\u00d7\u5206\u8fa8\u7387\u8d85\u5206\uff0c\u7136\u540e\u5bf9\u56fe\u50cf\u7684\u6bcf\u4e2a\u8fb9\u754c\u79fb\u96644\u4e2a\u50cf\u7d20\u70b9\uff0c\u6700\u540ecenter-cropped\u8ba1\u7b97PSNR\u548cSSIM\uff0c\u8fdb\u884c\u6709\u6548\u6027\u7edf\u8ba1\u5206\u6790\u3002<\/p>\n\n\n\n<p>\u968f\u673a\u91c7\u6837ImageNet\u6570\u636e\u96c6\u4e2d350\u5f20\u56fe\u50cf\u8fdb\u884c\u8bad\u7ec3\uff08\u53c2\u8003\u6e90\u7801\uff09\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"794\" height=\"337\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-263.png\" alt=\"\" class=\"wp-image-6010\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-263.png 794w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-263-300x127.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-263-768x326.png 768w\" sizes=\"(max-width: 794px) 100vw, 794px\" \/><\/figure>\n\n\n\n<h3 id=\"h_151762231_5\">SRGAN\u5b9e\u9a8c\u7ed3\u679c\u53ca\u5206\u6790<\/h3>\n\n\n\n<p>\u6d88\u878d\u5b9e\u9a8c\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol><li>skip-connection\u7ed3\u6784\u7684\u6709\u6548\u6027\uff1b<\/li><li>PSNR\u4f53\u73b0\u4e0d\u51fa\u4eba\u7684\u611f\u77e5\uff08MOS\uff09\uff1b<\/li><li>GAN-based Network\u80fd\u66f4\u597d\u6355\u6349\u4e00\u4e9b\u4eba\u7684\u611f\u77e5\u7ec6\u8282\uff08\u9ad8\u9891\u4fe1\u606f\uff1f\uff09\uff0cMOS\u66f4\u9ad8\uff1b<\/li><li>VGG\u7279\u5f81\u91cd\u5efa\u4e5f\u6709\u52a9\u4e8e\u6355\u6349\u56fe\u50cf\u7684\u90e8\u5206\u611f\u77e5\u7ec6\u8282\u3002<\/li><\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"441\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-264-1024x441.png\" alt=\"\" class=\"wp-image-6013\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-264-1024x441.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-264-300x129.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-264-768x331.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-264.png 1405w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" width=\"649\" height=\"296\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-266.png\" alt=\"\" class=\"wp-image-6017\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-266.png 649w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-266-300x137.png 300w\" sizes=\"(max-width: 649px) 100vw, 649px\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-267.png\" alt=\"\" class=\"wp-image-6018\" width=\"693\" height=\"268\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-267.png 1010w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-267-300x116.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-267-768x298.png 768w\" sizes=\"(max-width: 693px) 100vw, 693px\" \/><\/figure><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8bba\u6587\uff1a https:\/\/arxiv.org\/abs\/1609.04802\uff08CVPR 2017\uff09 \u8fd9\u7bc7\u6587\u7ae0\u7b2c\u4e00\u6b21 &hellip; <a href=\"http:\/\/139.9.1.231\/index.php\/2022\/08\/22\/srgan\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">SRGAN &#8212;\u4f7f\u7528GAN\u8fdb\u884c\u56fe\u50cf\u9ad8\u5206\u8fa8\u7684\u5f00\u5c71\u4e4b\u4f5c<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/5974"}],"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=5974"}],"version-history":[{"count":32,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/5974\/revisions"}],"predecessor-version":[{"id":6019,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/5974\/revisions\/6019"}],"wp:attachment":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/media?parent=5974"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/categories?post=5974"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/tags?post=5974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}