{"id":11916,"date":"2023-01-29T20:52:18","date_gmt":"2023-01-29T12:52:18","guid":{"rendered":"http:\/\/139.9.1.231\/?p=11916"},"modified":"2023-01-30T21:00:45","modified_gmt":"2023-01-30T13:00:45","slug":"pixelnerf","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2023\/01\/29\/pixelnerf\/","title":{"rendered":"PixelNeRF&#8211;\u5177\u6709\u6cdb\u5316\u6027\u7684NeRF"},"content":{"rendered":"\n<p class=\"has-text-align-center has-light-pink-background-color has-background\"><strong>pixelNeRF: Neural Radiance Fields from One or Few Images<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center\">\u4ee3\u7801\u94fe\u63a5\uff1a<a rel=\"noreferrer noopener\" href=\"https:\/\/github.com\/sxyu\/pixel-nerf\" target=\"_blank\">https:\/\/github.com\/sxyu\/pixel-nerf<\/a><\/p>\n\n\n\n<p class=\"has-text-align-center\">\u8bba\u6587\u94fe\u63a5\uff1a<a href=\"https:\/\/alexyu.net\/pixelnerf\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/alexyu.net\/pixelnerf\/<\/a><\/p>\n\n\n\n<p>Nerf\u63d0\u51fa\u4ee5\u6765\uff0c\u6536\u5230\u4e86\u5927\u91cf\u5173\u6ce8\u3002\u4f46\u662f\uff0c\u5b83\u4ecd\u5b58\u5728\u4ee5\u4e0b\u7f3a\u70b9\uff1a<\/p>\n\n\n\n<ol><li>Nerf\u7684\u8bad\u7ec3\u9700\u8981\u5f88\u591a\u6807\u51c6\u5316\u7684\u7167\u7247<\/li><li>\u8bad\u7ec3\u82b1\u8d39\u5927\u91cf\u65f6\u95f4<\/li><\/ol>\n\n\n\n<p>       \u56e0\u6b64\uff0c\u672c\u6587\u63d0\u51fa\u4e86\u4e00\u79cd\u57fa\u4e8e\u5168\u5377\u79ef\u7684Nerf\uff1apixelNerf\u3002\u5f53\u7ecf\u8fc7\u5927\u91cf\u8bad\u7ec3\u540e\uff0cpixelNerf\u53ef\u4ee5\u4ec5\u901a\u8fc7\u51e0\u5f20\uff08\u751a\u81f3\u4e00\u5f20\uff09\u7167\u7247\u8fdb\u884c\u826f\u597d\u7684\u89c6\u56fe\u5408\u6210\uff0c\u540c\u65f6\u8fd9\u79cd\u65b9\u5f0f\u4e5f\u4e0d\u9700\u8981\u7cbe\u786e\u76843D\u76d1\u7763\uff082D\u76d1\u7763\u5373\u53ef\uff09\u3002<\/p>\n\n\n\n<p>       \u4f5c\u8005\u63d0\u51fa\u4e86pixelNeRF\uff0c\u4e00\u4e2a\u53ea\u9700\u8981\u8f93\u5165\u5355\u5f20\u6216\u591a\u5f20\u56fe\u50cf\uff0c\u5c31\u80fd\u5f97\u5230\u8fde\u7eed\u573a\u666f\u8868\u793a\u7684\u5b66\u4e60\u6846\u67b6\u3002\u7531\u4e8e\u73b0\u5b58\u7684\u6784\u5efa\u795e\u7ecf\u8f90\u5c04\u573a\u7684\u65b9\u6cd5\u6d89\u53ca\u5230\u72ec\u7acb\u4f18\u5316\u6bcf\u4e2a\u573a\u666f\u7684\u8868\u793a\uff0c\u8fd9\u9700\u8981\u8bb8\u591a\u6821\u51c6\u7684\u89c6\u56fe\u548c\u5927\u91cf\u7684\u8ba1\u7b97\u65f6\u95f4\uff0c\u56e0\u6b64\u4f5c\u8005\u5f15\u5165\u4e86\u4e00\u79cd\u65b0\u7684\u7f51\u7edc\u67b6\u6784\u3002\u5b9e\u9a8c\u7ed3\u679c\u8868\u660e\uff0c\u5728\u6240\u6709\u60c5\u51b5\u4e0b\uff0cpixelNeRF\u5728\u65b0\u89c6\u56fe\u5408\u6210\u548c\u5355\u56fe\u50cf\u4e09\u7ef4\u91cd\u5efa\u65b9\u9762\u90fd\u4f18\u4e8e\u5f53\u524d\u6700\u5148\u8fdb\u7684\u5de5\u4f5c\u3002<\/p>\n\n\n\n<p>      \u8be5\u9879\u76ee\u4e3b\u8981\u7814\u7a76\u7684\u95ee\u9898\u662f\u5982\u4f55\u4ece\u4e00\u4e2a\u7a00\u758f\u7684\u8f93\u5165\u89c6\u56fe\u96c6\u4e2d\u5408\u6210\u8fd9\u4e2a\u573a\u666f\u7684\u65b0\u89c6\u56fe\uff0c\u5728\u53ef\u5fae\u795e\u7ecf\u6e32\u67d3\u51fa\u73b0\u4e4b\u524d\uff0c\u8fd9\u4e2a\u957f\u671f\u5b58\u5728\u7684\u95ee\u9898\u4e00\u76f4\u6ca1\u6709\u5f97\u5230\u8fdb\u5c55\u3002\u540c\u65f6\uff0c\u6700\u8fd1\u7684\u795e\u7ecf\u6e32\u67d3\u573aNeRF\u901a\u8fc7\u7f16\u7801\u4f53\u79ef\u5bc6\u5ea6\u548c\u989c\u8272\uff0c\u5728\u7279\u5b9a\u573a\u666f\u7684\u65b0\u89c6\u56fe\u5408\u6210\u65b9\u9762\u8868\u73b0\u51fa\u5f88\u597d\u7684\u6548\u679c\u3002\u867d\u7136NeRF\u53ef\u4ee5\u6e32\u67d3\u975e\u5e38\u903c\u771f\u7684\u65b0\u89c6\u56fe\uff0c\u4f46\u5b83\u901a\u5e38\u662f\u4e0d\u5207\u5b9e\u9645\u7684\uff0c\u56e0\u4e3a\u5b83\u9700\u8981\u5927\u91cf\u7684\u4f4d\u59ff\u56fe\u50cf\u548c\u5197\u957f\u7684\u573a\u666f\u4f18\u5316\u3002<\/p>\n\n\n\n<p class=\"has-light-pink-background-color has-background\">      \u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u4f5c\u8005\u5bf9\u4e0a\u8ff0\u65b9\u6cd5\u8fdb\u884c\u4e86\u6539\u8fdb\uff0c\u4e0eNeRF\u7f51\u7edc\u4e0d\u4f7f\u7528\u4efb\u4f55\u56fe\u50cf\u7279\u5f81\u4e0d\u540c\u7684\u662f\uff0cpixelNeRF\u5c06\u4e0e\u6bcf\u4e2a\u50cf\u7d20\u5bf9\u9f50\u7684\u7a7a\u95f4\u56fe\u50cf\u7279\u5f81\u4f5c\u4e3a\u8f93\u5165\u3002\u8fd9\u79cd\u56fe\u50cf\u8c03\u8282\u5141\u8bb8\u6846\u67b6\u5728\u4e00\u7ec4\u591a\u89c6\u56fe\u56fe\u50cf\u4e0a\u8fdb\u884c\u8bad\u7ec3\uff0c\u5b66\u4e60\u573a\u666f\u5148\u9a8c\uff0c\u7136\u540e\u4ece\u4e00\u4e2a\u6216\u51e0\u4e2a\u8f93\u5165\u56fe\u50cf\u4e2d\u5408\u6210\u89c6\u56fe\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"344\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-48-1024x344.png\" alt=\"\" class=\"wp-image-11936\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-48-1024x344.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-48-300x101.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-48-768x258.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-48-1536x517.png 1536w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-48.png 1650w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>        PixelNeRF\u5177\u6709\u5f88\u591a\u7279\u70b9\uff1a\u9996\u5148\uff0cPixel\u53ef\u4ee5\u5728\u591a\u89c6\u56fe\u56fe\u50cf\u7684\u6570\u636e\u96c6\u4e0a\u9762\u8fdb\u884c\u8bad\u7ec3\uff0c\u800c\u4e0d\u9700\u8981\u4efb\u4f55\u989d\u5916\u7684\u76d1\u7763\uff1b\u5176\u6b21\uff0cPixelNeRF\u9884\u6d4b\u8f93\u5165\u56fe\u50cf\u7684\u6444\u50cf\u673a\u5750\u6807\u7cfb\u4e2d\u7684NeRF\u8868\u793a\uff0c\u800c\u4e0d\u662f\u6807\u51c6\u5750\u6807\u7cfb\uff0c\u8fd9\u662f\u6cdb\u5316\u770b\u4e0d\u89c1\u7684\u573a\u666f\u548c\u7269\u4f53\u7c7b\u522b\u7684\u5fc5\u8981\u6761\u4ef6\uff0c\u56e0\u4e3a\u5728\u6709\u591a\u4e2a\u7269\u4f53\u7684\u573a\u666f\u4e2d\uff0c\u4e0d\u5b58\u5728\u660e\u786e\u7684\u89c4\u8303\u5750\u6807\u7cfb\uff1b\u7b2c\u4e09\uff0c\u5b83\u662f\u5b8c\u5168\u5377\u79ef\u7684\uff0c\u8fd9\u5141\u8bb8\u5b83\u4fdd\u6301\u56fe\u50cf\u548c\u8f93\u51fa3D\u8868\u793a\u4e4b\u95f4\u7684\u7a7a\u95f4\u5bf9\u9f50\uff1b\u6700\u540e\uff0cPixelNeRF\u53ef\u4ee5\u5728\u6d4b\u8bd5\u65f6\u5408\u5e76\u4efb\u610f\u6570\u91cf\u7684\u8f93\u5165\u89c6\u56fe\uff0c\u4e14\u4e0d\u9700\u8981\u4efb\u4f55\u4f18\u5316\u3002<\/p>\n\n\n\n<h4><strong>\u76f8\u5173\u5de5\u4f5c<\/strong><\/h4>\n\n\n\n<p><strong>\u65b0\u89c6\u56fe\u5408\u6210\uff1a<\/strong>\u8fd9\u662f\u4e00\u4e2a\u957f\u671f\u5b58\u5728\u7684\u95ee\u9898\uff0c\u5b83\u9700\u8981\u4ece\u4e00\u7ec4\u8f93\u5165\u89c6\u56fe\u4e2d\u6784\u5efa\u4e00\u4e2a\u573a\u666f\u7684\u65b0\u89c6\u56fe\u3002\u5c3d\u7ba1\u73b0\u5728\u6709\u5f88\u591a\u5de5\u4f5c\u90fd\u5df2\u7ecf\u53d6\u5f97\u4e86\u903c\u771f\u7684\u6548\u679c\uff0c\u4f46\u662f\u5b58\u5728\u6bd4\u8f83\u591a\u7684\u95ee\u9898\uff0c\u4f8b\u5982\u9700\u8981\u5bc6\u96c6\u7684\u89c6\u56fe\u548c\u5927\u91cf\u7684\u4f18\u5316\u65f6\u95f4\u3002<strong>\u5176\u4ed6\u65b9\u6cd5\u901a\u8fc7\u5b66\u4e60\u8de8\u573a\u666f\u5171\u4eab\u7684\u5148\u9a8c\u77e5\u8bc6\uff0c\u4ece\u5355\u4e2a\u6216\u5c11\u6570\u8f93\u5165\u89c6\u56fe\u8fdb\u884c\u65b0\u7684\u89c6\u56fe\u5408\u6210\uff0c\u4f46\u662f\u8fd9\u4e9b\u65b9\u6cd5\u4f7f\u75282.5D\u8868\u793a\uff0c\u56e0\u6b64\u5b83\u4eec\u80fd\u591f\u5408\u6210\u7684\u6444\u50cf\u673a\u8fd0\u52a8\u8303\u56f4\u662f\u6709\u9650<\/strong>\u7684\u3002\u5728\u8fd9\u9879\u5de5\u4f5c\u4e2d\uff0c\u4f5c\u8005\u63d0\u51fa\u4e86PixelNeRF\uff0c\u80fd\u591f\u76f4\u63a5\u4ece\u76f8\u5f53\u5927\u7684\u57fa\u7ebf\u4e2d\u5408\u6210\u65b0\u89c6\u56fe\u3002<\/p>\n\n\n\n<p><strong>\u57fa\u4e8e\u5b66\u4e60\u7684\u4e09\u7ef4\u91cd\u5efa\uff1a<\/strong>\u5f97\u76ca\u4e8e\u6df1\u5ea6\u5b66\u4e60\u7684\u53d1\u5c55\uff0c\u5355\u89c6\u56fe\u6216\u591a\u89c6\u56fe\u7684\u4e09\u7ef4\u91cd\u5efa\u4e5f\u5f97\u5230\u5feb\u901f\u7684\u53d1\u5c55\u3002\u95ee\u9898\u662f\uff0c\u5f88\u591a\u8868\u793a\u65b9\u6cd5\u90fd\u9700\u89813D\u6a21\u578b\u8fdb\u884c\u76d1\u7763\uff0c\u5c3d\u7ba1\u591a\u89c6\u56fe\u76d1\u7763\u9650\u5236\u66f4\u5c0f\u3001\u66f4\u5bb9\u6613\u83b7\u53d6\uff0c\u5176\u4e2d\u7684\u5f88\u591a\u65b9\u6cd5\u4e5f\u9700\u8981\u7269\u4f53\u7684mask\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0cPixelNeRF\u53ef\u4ee5\u5355\u72ec\u4ece\u56fe\u50cf\u4e2d\u8bad\u7ec3\uff0c\u5141\u8bb8\u5b83\u5e94\u7528\u5230\u542b\u6709\u4e24\u4e2a\u5bf9\u8c61\u7684\u573a\u666f\u800c\u4e0d\u9700\u8981\u4fee\u6539\u3002<\/p>\n\n\n\n<p><strong>\u4ee5\u89c2\u5bdf\u8005\u4e3a\u4e2d\u5fc3\u7684\u4e09\u7ef4\u91cd\u5efa\uff1a<\/strong>\u5bf9\u4e8e3D\u5b66\u4e60\u4efb\u52a1\uff0c\u53ef\u4ee5\u5728\u4ee5\u89c2\u5bdf\u8005\u4e3a\u4e2d\u5fc3\u7684\u5750\u6807\u7cfb\uff08\u5373\u89c6\u56fe\u7a7a\u95f4\uff09\u6216\u4ee5\u5bf9\u8c61\u4e3a\u4e2d\u5fc3\u7684\u5750\u6807\u7cfb\uff08\u5373\u89c4\u8303\u7a7a\u95f4\uff09\u4e2d\u8fdb\u884c\u9884\u6d4b\u3002\u5927\u591a\u6570\u73b0\u5b58\u7684\u65b9\u6cd5\u90fd\u662f\u5728\u89c4\u8303\u7a7a\u95f4\u4e2d\u8fdb\u884c\u9884\u6d4b\uff0c\u867d\u7136\u8fd9\u4f7f\u5f97\u5b66\u4e60\u7a7a\u95f4\u89c4\u5f8b\u66f4\u52a0\u5bb9\u6613\uff0c\u4f46\u662f\u4f1a\u964d\u4f4e\u4e0d\u53ef\u89c1\u5bf9\u8c61\u548c\u5177\u6709\u591a\u4e2a\u5bf9\u8c61\u573a\u666f\u7684\u9884\u6d4b\u6027\u80fd\u3002PixelNeRF\u5728\u89c6\u56fe\u7a7a\u95f4\u4e2d\u64cd\u4f5c\uff0c\u8fd9\u5728\u30102\u3011\u4e2d\u5df2\u7ecf\u88ab\u8bc1\u660e\u53ef\u4ee5\u66f4\u597d\u5730\u91cd\u5efa\u770b\u4e0d\u89c1\u7684\u5bf9\u8c61\u7c7b\u522b\uff0c<strong>\u5e76\u4e14\u4e0d\u9f13\u52b1\u5bf9\u8bad\u7ec3\u96c6\u7684\u8bb0\u5fc6<\/strong>\u3002\u4e0b\u8868\u662fPixelNeRF\u548c\u5176\u4ed6\u65b9\u6cd5\u7684\u5bf9\u6bd4\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"883\" height=\"292\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-49.png\" alt=\"\" class=\"wp-image-11940\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-49.png 883w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-49-300x99.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-49-768x254.png 768w\" sizes=\"(max-width: 883px) 100vw, 883px\" \/><\/figure>\n\n\n\n<h4>NeRF\u7684\u7f3a\u70b9\uff1a<\/h4>\n\n\n\n<p class=\"has-light-pink-background-color has-background\">       \u867d\u7136NeRF\u5b9e\u73b0\u4e86\u6700\u65b0\u7684\u89c6\u56fe\u5408\u6210\uff0c\u4f46\u5b83\u662f\u4e00\u79cd\u57fa\u4e8e\u4f18\u5316\u7684\u65b9\u6cd5\uff0c\u6bcf\u4e2a\u573a\u666f\u5fc5\u987b\u5355\u72ec\u4f18\u5316\uff0c\u573a\u666f\u4e4b\u95f4\u6ca1\u6709\u77e5\u8bc6\u5171\u4eab\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u8017\u65f6\uff0c\u800c\u4e14\u5728\u5355\u4e2a\u6216\u6781\u7a00\u758f\u89c6\u56fe\u7684\u9650\u5236\u4e0b\uff0c\u65e0\u6cd5\u5229\u7528\u4efb\u4f55\u5148\u9a8c\u77e5\u8bc6\u6765\u52a0\u901f\u91cd\u5efa\u6216\u5b8c\u6210\u5f62\u72b6\u3002<\/p>\n\n\n\n<h4><strong>\u57fa\u4e8e\u56fe\u50cf\u7684NeRF<\/strong>\uff1apixelNeRF<\/h4>\n\n\n\n<p>       \u4e3a\u4e86\u514b\u670d\u4e0a\u9762\u63d0\u5230\u7684\u5173\u4e8eNeRF\u7684\u95ee\u9898\uff0c\u4f5c\u8005\u63d0\u51fa\u4e86\u4e00\u79cd\u57fa\u4e8e\u7a7a\u95f4\u56fe\u50cf\u7279\u5f81\u7684NeRF\u7ed3\u6784\u3002\u8be5\u6a21\u578b\u7531\u4e24\u4e2a\u90e8\u5206\u7ec4\u6210\uff1a\u4e00\u4e2a\u5b8c\u5168\u5377\u79ef\u7684\u56fe\u50cf\u7f16\u7801\u5668E (\u5c06\u8f93\u5165\u56fe\u50cf\u7f16\u7801\u4e3a\u50cf\u7d20\u5bf9\u9f50\u7684\u7279\u5f81\u7f51\u683c)\u548c\u4e00\u4e2aNeRF\u7f51\u7edcf   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class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-59.png\" alt=\"\" class=\"wp-image-11997\" width=\"-303\" height=\"-49\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-59.png 479w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-59-300x49.png 300w\" sizes=\"(max-width: 479px) 100vw, 479px\" \/><\/figure><\/div>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-51-1024x277.png\" alt=\"\" class=\"wp-image-11950\" width=\"701\" height=\"189\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-51-1024x277.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-51-300x81.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-51-768x208.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-51-1536x416.png 1536w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-51.png 1879w\" sizes=\"(max-width: 701px) 100vw, 701px\" \/><\/figure>\n\n\n\n<p><strong>\u5408\u5e76\u591a\u4e2a\u89c6\u56fe\uff1a<\/strong>\u591a\u4e2a\u89c6\u56fe\u63d0\u4f9b\u4e86\u6709\u5173\u573a\u666f\u7684\u9644\u52a0\u4fe1\u606f\uff0c\u5e76\u89e3\u51b3\u4e86\u5355\u89c6\u56fe\u56fa\u6709\u7684\u4e09\u7ef4\u51e0\u4f55\u6b67\u4e49\u3002\u4f5c\u8005\u6269\u5c55\u4e86\u8be5\u6a21\u578b\uff0c\u4e0d\u540c\u4e8e\u73b0\u6709\u7684\u5728\u6d4b\u8bd5\u65f6\u53ea\u4f7f\u7528\u5355\u4e2a\u8f93\u5165\u89c6\u56fe\u7684\u65b9\u6cd5\uff0c\u5b83\u5141\u8bb8\u5728\u6d4b\u8bd5\u65f6\u6709\u4efb\u610f\u6570\u91cf\u7684\u89c6\u56fe\u3002<\/p>\n\n\n\n<p>\u5728\u6709\u591a\u4e2a\u8f93\u5165\u89c6\u56fe\u7684\u60c5\u51b5\u4e0b\uff0c\u53ea\u5047\u8bbe\u76f8\u5bf9\u7684\u76f8\u673a\u59ff\u6001\u662f\u5df2\u77e5\u7684\uff0c\u4e3a\u4e86\u4fbf\u4e8e\u89e3\u91ca\uff0c\u53ef\u4ee5\u4e3a\u573a\u666f\u4efb\u610f\u56fa\u5b9a\u4e00\u4e2a\u4e16\u754c\u5750\u6807\u7cfb\u3002\u628a\u8f93\u5165\u56fe\u50cf\u8bb0\u4e3aI\uff0c\u5176\u76f8\u5173\u8054\u7684\u6444\u50cf\u673a\u8bb0\u4e3aP=[R 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\/><\/figure><\/div>\n\n\n\n<p>\u4e3a\u4e86\u83b7\u5f97\u8f93\u51fa\u7684\u5bc6\u5ea6\u548c\u989c\u8272\uff0c\u4f5c\u8005\u72ec\u7acb\u5730\u5904\u7406\u6bcf\u4e2a\u89c6\u56fe\u5750\u6807\u5e27\u4e2d\u7684\u5750\u6807\u548c\u76f8\u5e94\u7684\u7279\u5f81\uff0c\u5e76\u5728NeRF\u7f51\u7edc\u4e2d\u805a\u5408\u89c6\u56fe\u3002\u5c06NeRF\u7f51\u7edc\u7684\u521d\u59cb\u5c42\u8868\u793a\u4e3af1\uff0c\u5b83\u5206\u522b\u5904\u7406\u6bcf\u4e2a\u8f93\u5165\u89c6\u56fe\u7a7a\u95f4\u4e2d\u7684\u8f93\u5165\uff0c\u5e76\u5c06\u6700\u7ec8\u5c42\u8868\u793a\u4e3af2\uff0c\u5b83\u5904\u7406\u805a\u5408\u89c6\u56fe\u3002<\/p>\n\n\n\n<p>\u548c\u5355\u89c6\u56fe\u7c7b\u4f3c\uff0c\u4f5c\u8005\u5c06\u6bcf\u4e2a\u8f93\u5165\u56fe\u50cf\u7f16\u7801\u6210\u7279\u5f81\u4f53\u79efW(i)=E(I(i))\u3002\u5bf9\u4e8e\u70b9x(i)\uff0c\u5728\u6295\u5f71\u56fe\u50cf\u5750\u6807\u03c0(x(i))\u5904\u4ece\u7279\u5f81\u4f53W(i)\u4e2d\u63d0\u53d6\u76f8\u5e94\u7684\u56fe\u50cf\u7279\u5f81\uff0c\u7136\u540e\u5c06\u8fd9\u4e9b\u8f93\u5165\u4f20\u9012\u5230f1\uff0c\u4ee5\u83b7\u5f97\u4e2d\u95f4\u5411\u91cf\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\/2023\/01\/image-53.png\" alt=\"\" class=\"wp-image-11954\" width=\"412\" height=\"68\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-53.png 763w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-53-300x50.png 300w\" sizes=\"(max-width: 412px) 100vw, 412px\" \/><\/figure><\/div>\n\n\n\n<p>\u6700\u540e\u7528\u5e73\u5747\u6c60\u5316\u7b97\u5b50\u03c8\u5c06\u4e2d\u95f4\u5411\u91cfV(i)\u805a\u5408\u5e76\u4f20\u9012\u5230\u6700\u540e\u4e00\u5c42f2\uff0c\u5f97\u5230\u9884\u6d4b\u7684\u5bc6\u5ea6\u548c\u989c\u8272\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\/2023\/01\/image-54.png\" alt=\"\" class=\"wp-image-11955\" width=\"322\" height=\"48\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-54.png 570w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-54-300x45.png 300w\" sizes=\"(max-width: 322px) 100vw, 322px\" \/><\/figure><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"926\" height=\"1024\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-47-926x1024.png\" alt=\"\" class=\"wp-image-11931\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-47-926x1024.png 926w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-47-271x300.png 271w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-47-768x850.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/01\/image-47.png 931w\" sizes=\"(max-width: 926px) 100vw, 926px\" \/><\/figure>\n\n\n\n<p>     <strong>     \u4e2a\u4eba\u89c9\u5f97\uff0c\u8fd9\u7bc7\u6587\u7ae0\u5176\u5b9e\u5c31\u662f\u5bf9\u539f\u59cbNerf\u505a\u4e86\u4e00\u4e2a\u6548\u679c\u5f88\u597d\u7684\u6539\u8fdb\uff1a\u5c06\u56fe\u7247\u8fdb\u884c\u7279\u5f81\u63d0\u53d6\u540e\u518d\u8f93\u5165Nerf\uff0c\uff08\u4f3c\u4e4e\u5e76\u6ca1\u6709\u5f88\u591a\u7684\u521b\u65b0\uff09\uff0c\u4f46\u662f\u4ece\u56fe\u4e2d\u5c55\u73b0\u7684\u6548\u679c\u6765\u770b\uff0c\u8fd9\u4e00\u6539\u8fdb\u662f\u5353\u6709\u6210\u6548\u7684\uff0c\u6216\u8bb8\u4e5f\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b0\u7684\u601d\u8def\u3002<\/strong><\/p>\n\n\n\n<p class=\"has-light-pink-background-color has-background\"><strong><em>\u76ee\u524d\u7684\u7f3a\u9677\uff1a<\/em><\/strong><\/p>\n\n\n\n<p>1) Like NeRF, our  rendering time is slow, and in fact, our runtime increases linearly when given more input views. Further, some methods (e.g. [28, 21]) can recover a mesh from the image enabling fast rendering and manipulation afterwards, while NeRF based representations cannot be converted to meshes very reliably. Improving NeRF\u2019s efficiency is an important re-search question that can enable real-time applications. <\/p>\n\n\n\n<p>2) As in the vanilla NeRF, we manually tune ray sampling bounds tn,tf and a scale for the positional encoding. Making NeRF-related methods scale-invariant is a crucial challenge.<br>3) While we have demonstrated our method on real data from the DTU dataset, we acknowledge that this dataset was captured under controlled settings and has matching camera poses across all scenes with limited viewpoints. Ultimately,our approach is bottlenecked by the availability of largescale wide baseline multi-view datasets, limiting the applicability to datasets such as ShapeNet and DTU. Learning<br>a general prior for 360\u25e6 scenes in-the-wild is an exciting direction for future work<\/p>\n\n\n\n<p><strong>\u53c2\u8003\u6587\u732e\uff1a<\/strong><\/p>\n\n\n\n<p>\u30101\u3011Ben Mildenhall, Pratul P. Srinivasan, Matthew Tancik,Jonathan T. Barron, Ravi Ramamoorthi, and Ren Ng. Nerf: Representing scenes as neural radiance fields for view synthesis. In Eur. Conf. Comput. Vis., 2020<\/p>\n\n\n\n<p>\u30102\u3011Daeyun Shin, Charless Fowlkes, and Derek Hoiem. Pixels, voxels, and views: A study of shape representations for single view 3d object shape prediction. In IEEE Conf. Comput.Vis. Pattern Recog., 2018.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>pixelNeRF: Neural Radiance Fields from One or Few Image &hellip; <a href=\"http:\/\/139.9.1.231\/index.php\/2023\/01\/29\/pixelnerf\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">PixelNeRF&#8211;\u5177\u6709\u6cdb\u5316\u6027\u7684NeRF<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,31],"tags":[],"_links":{"self":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/11916"}],"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=11916"}],"version-history":[{"count":41,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/11916\/revisions"}],"predecessor-version":[{"id":12239,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/11916\/revisions\/12239"}],"wp:attachment":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/media?parent=11916"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/categories?post=11916"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/tags?post=11916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}