\u63d2\u503c<\/a>\u51fd\u6570\u88ab\u9690\u542b\u5730\u5305\u542b\u5728\u524d\u9762\u7684\u5377\u79ef\u5c42\u4e2d\uff0c\u53ef\u4ee5\u81ea\u52a8\u5b66\u4e60\u5230\u3002\u53ea\u5728\u6700\u540e\u4e00\u5c42\u5bf9\u56fe\u50cf\u5927\u5c0f\u505a\u53d8\u6362\uff0c\u524d\u9762\u7684\u5377\u79ef\u8fd0\u7b97\u7531\u4e8e\u5728\u4f4e\u5206\u8fa8\u7387\u56fe\u50cf\u4e0a\u8fdb\u884c\uff0c\u56e0\u6b64\u6548\u7387\u4f1a\u8f83\u9ad8\u3002<\/p>\n\n\n\nESPCN\u6fc0\u6d3b\u51fd\u6570\u91c7\u7528tanh\u66ff\u4ee3\u4e86ReLU\u3002\u635f\u5931\u51fd\u6570\u4e3a\u5747\u65b9\u8bef\u5dee\u3002<\/p>\n\n\n\n![\"\"](\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/07\/image-19-1024x248.png\")
<\/figure>\n\n\n\npytorch\u4e2d\u5df2\u7ecf\u96c6\u6210\u4e86 sub-pixel convolution \uff1a<\/p>\n\n\n\n
nn.PixelShuffle(upscale_factor)<\/p>\n\n\n\n
\u4ee5\u56db\u7ef4\u8f93\u5165(N,C,H,W)\u4e3a\u4f8b\uff0cPixelshuffle\u4f1a\u5c06\u4e3a(\u2217,r 2 C r^2Cr<\/em>2C<\/em>,H,W)\u7684Tensor\u7ed9reshape\u6210(\u2217,C,rH,rW)\u7684Tensor<\/p>\n\n\n\nUpsample\uff1a<\/p>\n\n\n\n
\u5bf9\u7ed9\u5b9a\u591a\u901a\u9053\u76841\u7ef4\uff08temporal\uff09\u30012\u7ef4\uff08spatial\uff09\u30013\u7ef4\uff08volumetric\uff09\u6570\u636e\u8fdb\u884c\u4e0a\u91c7\u6837\u3002<\/p>\n\n\n\n
\u5bf9volumetric\u8f93\u5165\uff083\u7ef4\u2014\u2014\u70b9\u4e91\u6570\u636e\uff09\uff0c\u8f93\u5165\u6570\u636eTensor\u683c\u5f0f\u4e3a5\u7ef4\uff1aminibatch x channels x depth x height x width<\/strong>
\u5bf9spatial\u8f93\u5165\uff082\u7ef4\u2014\u2014jpg\u3001png\u7b49\u6570\u636e\uff09\uff0c\u8f93\u5165\u6570\u636eTensor\u683c\u5f0f\u4e3a4\u7ef4\uff1aminibatch x channels x height x width<\/strong>
\u5bf9temporal\u8f93\u5165\uff081\u7ef4\u2014\u2014\u5411\u91cf\u6570\u636e\uff09\uff0c\u8f93\u5165\u6570\u636eTensor\u683c\u5f0f\u4e3a3\u7ef4\uff1aminibatch x channels x width<\/strong><\/p>\n\n\n\n\u6b64\u7b97\u6cd5\u652f\u6301\u6700\u8fd1\u90bb\uff0c\u7ebf\u6027\u63d2\u503c\uff0c\u53cc\u7ebf\u6027\u63d2\u503c\uff0c\u4e09\u6b21\u7ebf\u6027\u63d2\u503c\u5bf93\u7ef4\u30014\u7ef4\u30015\u7ef4\u7684\u8f93\u5165Tensor\u5206\u522b\u8fdb\u884c\u4e0a\u91c7\u6837<\/strong>\uff08Upsample\uff09\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u8bba\u6587\u5730\u5740\uff1a https:\/\/arxiv.org\/abs\/1609.05158 \u4ee3\u7801\uff1ahttps:\/\/githu … \u7ee7\u7eed\u9605\u8bfbESPCN \u56fe\u50cf\u8d85\u5206\u8fa8\u7387\u65b9\u6cd5<\/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\/4809"}],"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=4809"}],"version-history":[{"count":7,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/4809\/revisions"}],"predecessor-version":[{"id":4818,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/4809\/revisions\/4818"}],"wp:attachment":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/media?parent=4809"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/categories?post=4809"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/tags?post=4809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/07\/image-18-1024x330.png\")
<\/figure>\n\n\n\n