{"id":5919,"date":"2022-08-22T19:56:31","date_gmt":"2022-08-22T11:56:31","guid":{"rendered":"http:\/\/139.9.1.231\/?p=5919"},"modified":"2022-08-22T19:56:32","modified_gmt":"2022-08-22T11:56:32","slug":"real-esrgan","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2022\/08\/22\/real-esrgan\/","title":{"rendered":"Real-ESRGAN  \u8d85\u5206\u8fa8\u7f51\u7edc"},"content":{"rendered":"\n<p class=\"has-bright-blue-background-color has-background\">\u8bba\u6587\uff1a<a href=\"https:\/\/arxiv.org\/pdf\/2107.10833.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Real-ESRGAN: TrainingReal-World Blind Super-Resolution with Pure Synthetic Data<\/a><\/p>\n\n\n\n<p class=\"has-bright-blue-background-color has-background\">\u4ee3\u7801\uff1a<a href=\"https:\/\/github.com\/xinntao\/Real-ESRGAN\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/github.com\/xinntao\/Real-ESRGAN<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"786\" height=\"231\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-229.png\" alt=\"\" class=\"wp-image-5922\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-229.png 786w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-229-300x88.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-229-768x226.png 768w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<p class=\"has-yellow-background-color has-background\"><strong>Real-ESRGAN \u7684\u76ee\u6807\u662f\u5f00\u53d1\u51fa\u5b9e\u7528\u7684\u56fe\u50cf\/\u89c6\u9891\u4fee\u590d\u7b97\u6cd5\u3002<br>\u5728 ESRGAN \u7684\u57fa\u7840\u4e0a\u4f7f\u7528\u7eaf\u5408\u6210\u7684\u6570\u636e\u6765\u8fdb\u884c\u8bad\u7ec3\uff0c\u4ee5\u4f7f\u5176\u80fd\u88ab\u5e94\u7528\u4e8e\u5b9e\u9645\u7684\u56fe\u7247\u4fee\u590d\u7684\u573a\u666f\uff08\u987e\u540d\u601d\u4e49\uff1aReal-ESRGAN\uff09\u3002<\/strong><\/p>\n\n\n\n<ol><li><strong>\u76ee\u6807\uff1a\u89e3\u51b3\u771f\u5b9e\u573a\u666f\u4e0b\u7684\u56fe\u50cf\u6a21\u7cca\u95ee\u9898\u3002<\/strong><\/li><li><strong>\u6570\u636e\u96c6\u7684\u6784\u5efa\uff1a\u6a21\u7cca\u6838\u3001\u566a\u58f0\u3001\u5c3a\u5bf8\u7f29\u5c0f\u3001\u538b\u7f29\u56db\u79cd\u64cd\u4f5c\u7684\u968f\u673a\u987a\u5e8f\u3002<\/strong><\/li><li><strong>\u8d85\u5206\u7f51\u7edcbackbone\uff1aESRGAN\u7684\u751f\u6210\u7f51\u7edc+U-Net discriminator\u5224\u522b\u5668\u3002<\/strong><\/li><li><strong>\u635f\u5931\u51fd\u6570\uff1aL1 loss\uff0cperceptual loss\uff0c\u751f\u6210\u5bf9\u6297\u635f\u5931\u3002<\/strong><\/li><li><strong>\u4e3b\u8981\u5bf9\u6bd4\u65b9\u6cd5\u662f\uff1aRealSR\u3001ESRGAN\u3001BSRGAN\u3001DAN\u3001CDC\u3002<\/strong><\/li><\/ol>\n\n\n\n<h4 class=\"has-light-pink-background-color has-background\">\u521b\u65b0\u70b9<\/h4>\n\n\n\n<ol><li>\u63d0\u51fa\u4e86\u65b0\u7684\u6784\u5efa\u6570\u636e\u96c6\u7684\u65b9\u6cd5\uff0c\u7528\u9ad8\u9636\u5904\u7406\uff0c\u589e\u5f3a\u964d\u9636\u56fe\u50cf\u7684\u590d\u6742\u5ea6\u3002<\/li><li>\u6784\u9020\u6570\u636e\u96c6\u65f6\u5f15\u5165sinc filter\uff0c\u89e3\u51b3\u4e86\u56fe\u50cf\u4e2d\u7684\u632f\u94c3\u548c\u8fc7\u51b2\u73b0\u8c61\u3002<\/li><li>\u66ff\u6362\u539f\u59cbESRGAN\u4e2d\u7684VGG-discriminator\uff0c\u4f7f\u7528U-Net discriminator\uff0c\u4ee5\u589e\u5f3a\u56fe\u50cf\u7684\u5bf9\u7ec6\u8282\u4e0a\u7684\u5bf9\u6297\u5b66\u4e60\u3002<\/li><li>\u5f15\u5165spectral normalization\u4ee5\u7a33\u5b9a\u7531\u4e8e\u590d\u6742\u6570\u636e\u96c6\u548cU-Net discriminator\u5e26\u6765\u7684\u8bad\u7ec3\u4e0d\u7a33\u5b9a\u60c5\u51b5\u3002<\/li><\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"481\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-230-1024x481.png\" alt=\"\" class=\"wp-image-5930\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-230-1024x481.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-230-300x141.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-230-768x361.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-230.png 1121w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2>\u6570\u636e\u96c6\u6784\u5efa<\/h2>\n\n\n\n<p>\u5728\u8ba8\u8bba\u6570\u636e\u96c6\u7684\u6784\u5efa\u524d\uff0c\u4f5c\u8005\u8be6\u7ec6\u8ba8\u8bba\u4e86\u9020\u6210\u56fe\u50cf\u6a21\u7cca\u7684\u539f\u56e0\uff0c\u4f8b\u5982\uff1a\u5e74\u4ee3\u4e45\u8fdc\u7684\u624b\u673a\u3001\u4f20\u611f\u5668\u566a\u58f0\u3001\u76f8\u673a\u6a21\u7cca\u3001\u56fe\u50cf\u7f16\u8f91\u3001\u56fe\u50cf\u5728\u7f51\u7edc\u4e2d\u7684\u4f20\u8f93\u3001JPEG\u538b\u7f29\u4ee5\u53ca\u5176\u5b83\u566a\u58f0\u3002\u539f\u6587\u5982\u4e0b\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>For example, when we take a photo with our cellphones, the photos may have several degradations, such as camera blur, sensor noise, sharpening artifacts, and JPEG compression. We then do some editing and upload to a social media APP, which introduces further compression and unpredictable noises.<\/p><\/blockquote>\n\n\n\n<p>\u6240\u4ee5\u4f5c\u8005\u9488\u5bf9\u4ee5\u4e0a\u95ee\u9898\uff0c\u63d0\u51fa\u4e86High-order\u964d\u7ea7\u6a21\u578b\u3002\u5148\u9762\u6211\u4eec\u5148\u4ecb\u7ecdfirst-order\u964d\u7ea7\u6a21\u578b\uff0c\u7136\u540e\u5c31\u5f88\u597d\u7406\u89e3High-order\u964d\u7ea7\u6a21\u578b\u4e86\u3002<\/p>\n\n\n\n<p><strong>First-order<\/strong><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" width=\"423\" height=\"43\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-279.png\" alt=\"\" class=\"wp-image-6053\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-279.png 423w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-279-300x30.png 300w\" sizes=\"(max-width: 423px) 100vw, 423px\" \/><\/figure><\/div>\n\n\n\n<p>First-order\u964d\u7ea7\u6a21\u578b\u5176\u5b9e\u5c31\u662f\u5e38\u89c4\u7684\u964d\u7ea7\u6a21\u578b\uff0c\u5982\u4e0a\u5f0f\u6240\u793a\uff0c\u6309\u987a\u5e8f\u6267\u884c\u4e0a\u8ff0\u64cd\u4f5c\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>x\u4ee3\u8868\u964d\u7ea7\u540e\u7684\u56fe\u50cf\uff0cD\u4ee3\u8868\u964d\u7ea7\u51fd\u6570\uff0cy\u4ee3\u8868\u539f\u59cb\u56fe\u50cf\uff1b<br>k\u4ee3\u8868\u6a21\u7cca\u6838\uff0cr\u4ee3\u8868\u7f29\u5c0f\u6bd4\u4f8b\uff0cn\u4ee3\u8868\u52a0\u5165\u7684\u566a\u58f0\uff0cJPEG\u4ee3\u8868\u8fdb\u884c\u538b\u7f29\u3002<\/p><\/blockquote>\n\n\n\n<p>\u6bcf\u4e00\u79cd\u964d\u7ea7\u65b9\u6cd5\u53c8\u6709\u591a\u79cd\u964d\u7ea7\u65b9\u6848\u53ef\u4ee5\u9009\u62e9\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"970\" height=\"236\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-283.png\" alt=\"\" class=\"wp-image-6062\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-283.png 970w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-283-300x73.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-283-768x187.png 768w\" sizes=\"(max-width: 970px) 100vw, 970px\" \/><\/figure>\n\n\n\n<p>\u5bf9\u4e8e\u6a21\u7cca\u6838k\uff0c\u672c\u65b9\u6cd5\u4f7f\u7528\u5404\u9879\u540c\u6027\uff08isotropic\uff09\u548c\u5404\u5411\u5f02\u6027\uff08anisotropic\uff09\u7684\u9ad8\u65af\u6a21\u7cca\u6838\u3002\u5173\u4e8esinc filter\u4f1a\u5728\u4e0b\u6587\u4e2d\u63d0\u5230\u3002<\/p>\n\n\n\n<p>\u5bf9\u4e8e\u7f29\u5c0f\u64cd\u4f5cr\uff0c\u5e38\u7528\u7684\u65b9\u6cd5\u53c8\u53cc\u4e09\u6b21\u63d2\u503c\u3001\u53cc\u7ebf\u6027\u63d2\u503c\u3001\u533a\u57df\u63d2\u503c&#8212;\u7531\u4e8e\u6700\u8fd1\u90bb\u63d2\u503c\u9700\u8981\u8003\u8651\u5bf9\u9f50\u95ee\u9898\uff0c\u6240\u4ee5\u4e0d\u4e88\u4ee5\u8003\u8651\u3002\u5728\u6267\u884c\u7f29\u5c0f\u64cd\u4f5c\u65f6\uff0c\u672c\u65b9\u6cd5\u4ece\u63d0\u5230\u76843\u79cd\u63d2\u503c\u65b9\u5f0f\u4e2d\u968f\u673a\u9009\u62e9\u4e00\u79cd\u3002<\/p>\n\n\n\n<p>\u5bf9\u4e8e\u52a0\u5165\u566a\u58f0\u64cd\u4f5cn\uff0c\u672c\u65b9\u6cd5\u540c\u65f6\u52a0\u5165\u9ad8\u65af\u566a\u58f0\u548c\u670d\u4ece\u6cca\u677e\u5206\u5e03\u7684\u566a\u58f0\u3002\u540c\u65f6\uff0c\u6839\u636e\u5f85\u8d85\u5206\u56fe\u50cf\u7684\u901a\u9053\u6570\uff0c\u52a0\u5165\u566a\u58f0\u7684\u64cd\u4f5c\u53ef\u4ee5\u5206\u4e3a\u5bf9\u5f69\u8272\u56fe\u50cf\u6dfb\u52a0\u566a\u58f0\u548c\u5bf9\u7070\u5ea6\u56fe\u50cf\u6dfb\u52a0\u566a\u58f0\u3002<\/p>\n\n\n\n<p>JPEG\u538b\u7f29\uff0c\u672c\u65b9\u6cd5\u901a\u8fc7\u4ece[0, 100]\u8303\u56f4\u4e2d\u9009\u62e9\u538b\u7f29\u8d28\u91cf\uff0c\u5bf9\u56fe\u50cf\u8fdb\u884cJPEG\u538b\u7f29\uff0c\u5176\u4e2d0\u8868\u793a\u538b\u7f29\u540e\u7684\u8d28\u91cf\u6700\u5dee\uff0c100\u8868\u793a\u538b\u7f29\u540e\u7684\u8d28\u91cf\u6700\u597d\u3002JPEG\u538b\u7f29\u65b9\u6cd5<a rel=\"noreferrer noopener\" href=\"https:\/\/github.com\/mlomnitz\/DiffJPEG\" target=\"_blank\">\u70b9\u6b64\u5904<\/a>\u3002<\/p>\n\n\n\n<ul><li><strong>High-order<\/strong><\/li><\/ul>\n\n\n\n<p>First-order\u7531\u4e8e\u4f7f\u7528\u76f8\u5bf9\u5355\u8c03\u7684\u964d\u7ea7\u65b9\u6cd5\uff0c\u5176\u5b9e\u5f88\u96be\u6a21\u4eff\u771f\u5b9e\u4e16\u754c\u4e2d\u7684\u56fe\u50cf\u4f4e\u5206\u8fa8\u6a21\u7cca\u60c5\u51b5\u3002\u56e0\u6b64\uff0c\u4f5c\u8005\u63d0\u51fa\u7684High-order\u5176\u5b9e\u662f\u4e3a\u4e86\u4f7f\u7528\u66f4\u590d\u6742\u7684\u964d\u7ea7\u65b9\u6cd5\uff0c\u66f4\u597d\u7684\u6a21\u62df\u771f\u5b9e\u4e16\u754c\u4e2d\u7684\u4f4e\u5206\u8fa8\u6a21\u7cca\u60c5\u51b5\uff0c\u4ece\u800c\u8fbe\u5230\u66f4\u597d\u7684\u5b66\u4e60\u6548\u679c\u3002\u4e00\u9636\u964d\u7ea7\u6a21\u578b\u6784\u5efa\u7684\u6570\u636e\u96c6\u8bad\u7ec3\u7ed3\u679c\u5982\u4e0b\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-281.png\" alt=\"\" class=\"wp-image-6057\" width=\"397\" height=\"394\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-281.png 592w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-281-300x297.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-281-150x150.png 150w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-281-120x120.png 120w\" sizes=\"(max-width: 397px) 100vw, 397px\" \/><\/figure><\/div>\n\n\n\n<p>\u9ad8\u9636\u964d\u7ea7\u6a21\u578b\u516c\u5f0f\u5982\u4e0b\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-282.png\" alt=\"\" class=\"wp-image-6060\" width=\"538\" height=\"59\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-282.png 538w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-282-300x33.png 300w\" sizes=\"(max-width: 538px) 100vw, 538px\" \/><\/figure><\/div>\n\n\n\n<p>\u4e0a\u5f0f\uff0c\u5176\u5b9e\u5c31\u662f\u5bf9First-order\u8fdb\u884c\u591a\u6b21\u91cd\u590d\u64cd\u4f5c\uff0c\u4e5f\u5c31\u662f\u6bcf\u4e00\u4e2aD\u90fd\u662f\u6267\u884c\u4e00\u6b21\u5b8c\u6574\u7684First-order\u964d\u7ea7\u3002\u4f5c\u8005\u901a\u8fc7\u5b9e\u9a8c\u5f97\u51fa\uff0c\u5f53\u6267\u884c2\u6b21First-order\u65f6\u751f\u6210\u7684\u6570\u636e\u96c6\u8bad\u7ec3\u6548\u679c\u6700\u597d\u3002\u6240\u4ee5\uff0cHigh-order\u7684pipeline\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"406\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-280-1024x406.png\" alt=\"\" class=\"wp-image-6054\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-280-1024x406.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-280-300x119.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-280-768x305.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-280.png 1371w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ul><li><strong>sinc filter<\/strong><\/li><\/ul>\n\n\n\n<p>\u4e3a\u4e86\u89e3\u51b3\u8d85\u5206\u56fe\u50cf\u7684\u632f\u94c3\u548c\u8fc7\u51b2\u73b0\u8c61\uff08<a rel=\"noreferrer noopener\" href=\"https:\/\/en.wikipedia.org\/wiki\/Ringing_artifacts\" target=\"_blank\">\u632f\u94c3<\/a>\u548c<a rel=\"noreferrer noopener\" href=\"https:\/\/en.wikipedia.org\/wiki\/Overshoot_(signal)\" target=\"_blank\">\u8fc7\u51b2<\/a>\u5728\u56fe\u50cf\u5904\u7406\u4e2d\u5f88\u5e38\u89c1\uff0c\u6b64\u5904\u4e0d\u8fc7\u591a\u4ecb\u7ecd\uff09\uff0c\u4f5c\u8005\u63d0\u51fa\u4e86\u5728\u6784\u5efa\u964d\u7ea7\u6a21\u578b\u4e2d\u589e\u52a0sinc filter\u7684\u64cd\u4f5c\u3002\u5148\u6765\u770b\u4e00\u4e0b\u632f\u94c3\u548c\u8fc7\u51b2\u4f2a\u5f71\u7684\u6548\u679c\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" width=\"599\" height=\"478\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-284.png\" alt=\"\" class=\"wp-image-6064\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-284.png 599w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-284-300x239.png 300w\" sizes=\"(max-width: 599px) 100vw, 599px\" \/><\/figure><\/div>\n\n\n\n<p>\u4e0a\u56fe\u8868\u793a\u5b9e\u9645\u4e2d\u7684\u632f\u94c3\u548c\u8fc7\u51b2\u4f2a\u5f71\u73b0\u8c61\uff0c\u4e0b\u56fe\u8868\u793a\u901a\u8fc7\u5bf9sinc filter\u8bbe\u7f6e\u4e0d\u540c\u7684\u56e0\u5b50\u4eba\u5de5\u6a21\u4eff\u7684\u632f\u94c3\u548c\u8fc7\u51b2\u4f2a\u5f71\u73b0\u8c61\u3002\u8fc7\u4e8e\u5982\u4f55\u6784\u9020sinc filter\uff0c\u8be6\u7ec6\u7ec6\u8282\u5efa\u8bae\u770b\u539f\u6587\u3002<\/p>\n\n\n\n<p>sinc filter\u5728\u4e24\u4e2a\u4f4d\u7f6e\u8fdb\u884c\u8bbe\u7f6e\uff0c\u4e00\u662f\u5728\u6bcf\u4e00\u9636\u7684\u6a21\u7cca\u6838k\u7684\u5904\u7406\u4e2d\uff0c\u4e5f\u5c31\u662f\u5728\u5404\u9879\u540c\u6027\u548c\u5404\u9879\u5f02\u6027\u7684\u9ad8\u65af\u6a21\u7cca\u4e4b\u540e\uff0c\u8bbe\u7f6esinc filter\uff1b\u4e8c\u662f\u5728\u6700\u540e\u4e00\u9636\u7684JPEG\u538b\u7f29\u65f6\uff0c\u8bbe\u7f6esinc filter\uff0c\u5176\u4e2d\u6700\u540e\u4e00\u9636\u7684JPEG\u548csinc filter\u6267\u884c\u5148\u540e\u987a\u5e8f\u662f\u968f\u673a\u7684\u3002<\/p>\n\n\n\n<h2>\u7f51\u7edc\u7ed3\u6784<\/h2>\n\n\n\n<ul><li><strong>\u751f\u6210\u7f51\u7edc<\/strong><\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"302\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-285-1024x302.png\" alt=\"\" class=\"wp-image-6067\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-285-1024x302.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-285-300x88.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-285-768x226.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-285.png 1300w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>    \u751f\u6210\u7f51\u7edc\u662fESRGAN\u7684\u751f\u6210\u7f51\u7edc\uff0c\u57fa\u672c\u6ca1\u53d8\uff0c\u53ea\u662f\u5728\u529f\u80fd\u4e0a\u589e\u52a0\u4e86\u5bf9x2\u548cx1\u500d\u7684\u56fe\u50cf\u6e05\u6670\u5ea6\u63d0\u5347\u3002\u5bf9\u4e8ex4\u500d\u7684\u8d85\u5206\u8fa8\uff0c\u7f51\u7edc\u5b8c\u5168\u6309\u7167ESRGAN\u7684\u751f\u6210\u5668\u6267\u884c\uff1b\u800c\u5bf9\u4e8eX2\u548cX1\u500d\u7684\u8d85\u5206\u8fa8\uff0c\u7f51\u7edc\u5148\u8fdb\u884cpixel-unshuffle\uff08pixel-shuffl\u7684\u53cd\u64cd\u4f5c\uff0cpixel-shuffle\u53ef\u7406\u89e3\u4e3a\u901a\u8fc7\u538b\u7f29\u56fe\u50cf\u901a\u9053\u800c\u5bf9\u56fe\u50cf\u5c3a\u5bf8\u8fdb\u884c\u653e\u5927\uff09\uff0c\u4ee5\u964d\u4f4e\u56fe\u50cf\u5206\u8fa8\u7387\u4e3a\u524d\u63d0\uff0c\u5bf9\u56fe\u50cf\u901a\u9053\u6570\u8fdb\u884c\u6269\u5145\uff0c\u7136\u540e\u5c06\u5904\u7406\u540e\u7684\u56fe\u50cf\u8f93\u5165\u7f51\u7edc\u8fdb\u884c\u8d85\u5206\u8fa8\u91cd\u5efa\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff1a\u5bf9\u4e8e\u4e00\u5e45\u56fe\u50cf\uff0c\u82e5\u53ea\u60f3\u8fdb\u884cx2\u500d\u653e\u5927\u53d8\u6e05\u6670\uff0c\u9700\u5148\u901a\u8fc7pixel-unshuffle\u8fdb\u884c2\u500d\u7f29\u5c0f\uff0c\u7136\u540e\u901a\u8fc7\u7f51\u7edc\u8fdb\u884c4\u500d\u653e\u5927\u3002<\/p>\n\n\n\n<p><strong>\u5bf9\u6297\u7f51\u7edc<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"641\" height=\"254\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-286.png\" alt=\"\" class=\"wp-image-6070\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-286.png 641w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-286-300x119.png 300w\" sizes=\"(max-width: 641px) 100vw, 641px\" \/><\/figure>\n\n\n\n<p>        \u7531\u4e8e\u4f7f\u7528\u7684\u590d\u6742\u7684\u6784\u5efa\u6570\u636e\u96c6\u7684\u65b9\u5f0f\uff0c\u6240\u4ee5\u9700\u8981\u4f7f\u7528\u66f4\u5148\u8fdb\u7684\u5224\u522b\u5668\u5bf9\u751f\u6210\u56fe\u50cf\u8fdb\u884c\u5224\u522b\u3002\u4e4b\u524d\u7684ESRGAN\u7684\u5224\u522b\u5668\u66f4\u591a\u7684\u96c6\u4e2d\u5728\u56fe\u50cf\u7684\u6574\u4f53\u89d2\u5ea6\u5224\u522b\u771f\u4f2a\uff0c\u800c\u4f7f\u7528U-Net 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loss\uff0c\u8bad\u7ec3\u4ee5PSRN\u4e3a\u5bfc\u5411\u7684\u7f51\u7edc\uff0c\u83b7\u5f97\u7684\u6a21\u578b\u79f0\u4e3aReal-ESRNet\u3002<\/li><li>\u4ee5Real-ESRNet\u7684\u7f51\u7edc\u53c2\u6570\u8fdb\u884c\u7f51\u7edc\u521d\u59cb\u5316\uff0c\u635f\u5931\u51fd\u6570\u8bbe\u7f6e\u4e3a L1 loss\u3001perceptual loss\u3001 GAN loss\uff0c\u8bad\u7ec3\u6700\u7ec8\u7684\u7f51\u7edcReal-ESRGAN\u3002<\/li><\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"477\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-287-1024x477.png\" alt=\"\" class=\"wp-image-6075\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-287-1024x477.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-287-300x140.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-287-768x357.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-287.png 1257w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"249\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-288-1024x249.png\" alt=\"\" class=\"wp-image-6076\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-288-1024x249.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-288-300x73.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-288-768x187.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-288.png 1265w\" 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=\"642\" height=\"410\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-289.png\" alt=\"\" class=\"wp-image-6077\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-289.png 642w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-289-300x192.png 300w\" sizes=\"(max-width: 642px) 100vw, 642px\" \/><\/figure><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u8bba\u6587\uff1aReal-ESRGAN: TrainingReal-World Blind Super-Resoluti &hellip; <a href=\"http:\/\/139.9.1.231\/index.php\/2022\/08\/22\/real-esrgan\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">Real-ESRGAN  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