{"id":15363,"date":"2023-07-15T15:09:13","date_gmt":"2023-07-15T07:09:13","guid":{"rendered":"http:\/\/139.9.1.231\/?p=15363"},"modified":"2023-07-15T15:09:14","modified_gmt":"2023-07-15T07:09:14","slug":"condition_diff","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2023\/07\/15\/condition_diff\/","title":{"rendered":"\u6761\u4ef6\u63a7\u5236\u6269\u6563\u6a21\u578b"},"content":{"rendered":"\n<p class=\"has-light-gray-background-color has-background\">\u53c2\u8003\uff1a<a href=\"https:\/\/www.zhangzhenhu.com\/aigc\/Guidance.html\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.zhangzhenhu.com\/aigc\/Guidance.html<\/a><\/p>\n\n\n\n<p>      \u65e0\u8bba\u662f DDPM \u8fd8\u662f DDIM\uff0c\u8fd9\u4e9b\u6269\u6563\u6a21\u578b\u5728\u751f\u6210\u56fe\u7247\u65f6\uff0c\u90fd\u662f\u8f93\u5165\u4e00\u4e2a\u968f\u673a\u9ad8\u65af\u566a\u58f0\u6570\u636e\uff0c \u7136\u540e\u9010\u6b65\u7684\u4ea7\u51fa\u4e00\u5f20\u6709\u610f\u7684\u771f\u5b9e\u56fe\u7247\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u6bcf\u4e00\u6b65\u90fd\u662f\u4e00\u4e2a\u968f\u673a\u8fc7\u7a0b\uff0c\u6240\u4ee5\u6bcf\u6b21\u6267\u884c\u4ea7\u51fa\u7684\u56fe\u7247\u90fd\u4e0d\u4e00\u6837\uff0c \u751f\u6210\u7684\u56fe\u50cf\u591a\u6837\u6027\u975e\u5e38\u597d\u3002 \u4f46\u8fd9\u4e5f\u662f\u4e00\u4e2a\u7f3a\u70b9\uff1a<strong>\u751f\u6210\u7684\u56fe\u50cf\u4e0d\u53ef\u63a7\uff0c\u65e0\u6cd5\u63a7\u5236\u8fd9\u4e2a\u751f\u6210\u8fc7\u7a0b\u5e76\u4ee4\u5176\u751f\u6210\u6211\u4eec\u60f3\u8981\u7684\u56fe\u50cf\u5185\u5bb9<\/strong>\u3002<\/p>\n\n\n\n<p>\u9274\u4e8e\u6b64\uff0c\u5f88\u591a\u7814\u7a76\u4e2d\u5728\u5982\u4f55\u63a7\u5236\u56fe\u50cf\u751f\u6210\u8fc7\u7a0b\u65b9\u9762\u63d0\u51fa\u4e86\u5f88\u591a\u6709\u6548\u7684\u65b9\u6848\u3002 \u76f4\u89c9\u7684\u8bb2\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u6269\u6563\u8fc7\u7a0b\u4e2d\u5f15\u5165\u989d\u5916\u7684\u4fe1\u606f\u6765\u6307\u5bfc\u6216\u8005\u8bf4\u63a7\u5236\u6574\u4e2a\u6269\u6563\u6a21\u578b\uff0c \u5047\u8bbe\u8fd9\u4e2a\u989d\u5916\u7684\u4fe1\u606f\u4e3a\u00a0y\uff0c\u5b83\u53ef\u4ee5\u662f\u4e00\u6bb5\u6587\u672c\u3001\u4e00\u5f20\u56fe\u7247\u6216\u8005\u56fe\u50cf\u7684\u7c7b\u522b\u6807\u7b7e\u3002 \u5f15\u5165\u00a0y\u00a0\u4e4b\u540e\u7684\u6a21\u578b\u5c31\u53d8\u6210\u4e86\u4e00\u4e2a\u4ee5\u00a0y\u00a0\u4e3a\u6761\u4ef6\u7684\u6761\u4ef6\u6982\u7387\u5206\u5e03\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\/2023\/07\/image-24.png\" alt=\"\" class=\"wp-image-15382\" width=\"122\" height=\"40\"\/><\/figure><\/div>\n\n\n\n<p>\u81ea\u7136\u800c\u7136\u5730\uff0c\u63a5\u4e0b\u6765\u5c31\u9700\u8981\u63a2\u8ba8\uff0c\u5f15\u5165y\u00a0\u4e4b\u540e\u5bf9\u524d\u5411\u6269\u6563\u8fc7\u7a0b\u548c\u9006\u5411\u91c7\u7528\u8fc7\u7a0b\u5206\u522b\u6709\u4ec0\u4e48\u5f71\u54cd\uff0c\u9700\u8981\u505a\u51fa\u4ec0\u4e48\u8c03\u6574\u3002 \u9996\u5148\u770b\u4e0b\u5bf9\u524d\u5411\u6269\u6563\u8fc7\u7a0b\u7684\u5f71\u54cd\uff0c\u5148\u8bf4\u7ed3\u8bba\uff1a<strong>\u5f15\u5165<\/strong>\u00a0y\u00a0<strong>\u4e4b\u540e\uff0c\u5bf9\u524d\u5411\u6269\u6563\u8fc7\u7a0b\u6ca1\u6709\u4efb\u4f55\u5f71\u54cd<\/strong>\u3002 \u5176\u5b9e\uff0c\u4ece\u76f4\u89c9\u4e0a\u8bb2\uff0c\u524d\u5411\u6269\u6563\u8fc7\u7a0b\u662f\u5bf9\u539f\u59cb\u56fe\u7247\u52a0\u566a\u58f0\uff0c\u76f4\u81f3\u53d8\u6210\u7eaf\u566a\u58f0\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u663e\u7136\u4e0e\u00a0y\u6ca1\u6709\u4efb\u4f55\u5173\u7cfb\u3002 \u4f46\u505a\u7814\u7a76\u8981\u4e25\u8c28\uff0c\u8fd8\u662f\u9700\u8981\u7ed9\u51fa\u6570\u5b66\u8bc1\u660e\u7684\u3002 \u8bc1\u660e\u8fc7\u7a0b\u5728\u8bba\u6587\u00a0<a href=\"https:\/\/www.zhangzhenhu.com\/aigc\/Guidance.html#footcite-dhariwal2021diffusion\">1<\/a>\u00a0\u4e2d\u5df2\u7ecf\u7ed9\u51fa\u3002<\/p>\n\n\n\n<p><strong>\u6761\u4ef6\u6269\u6563\u6a21\u578b\u7684\u524d\u5411\u8fc7\u7a0b\u4e0e\u975e\u6761\u4ef6\u6269\u6563\u6a21\u578b\u7684\u524d\u5411\u8fc7\u7a0b\u5b8c\u5168\u4e00\u6837<\/strong>\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1020\" height=\"1024\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-25-1020x1024.png\" alt=\"\" class=\"wp-image-15384\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-25-1020x1024.png 1020w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-25-300x300.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-25-150x150.png 150w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-25-768x771.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-25-120x120.png 120w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-25.png 1092w\" sizes=\"(max-width: 1020px) 100vw, 1020px\" \/><\/figure>\n\n\n\n<h2>1\u3001classifier guidance<\/h2>\n\n\n\n<p>    OpenAI \u7684\u56e2\u961f\u5728 2021 \u5e74\u53d1\u8868\u4e00\u7bc7\u8bba\u6587\u00a0<a href=\"https:\/\/www.zhangzhenhu.com\/aigc\/Guidance.html#footcite-dhariwal2021diffusion\">1<\/a>\u00a0:\u00a0A. Diffusion models beat gans on image synthesis\u00a0\uff0c\u5728\u8fd9\u7bc7\u8bba\u6587\u4e2d\uff0c\u63d0\u51fa\u4e00\u79cd\u5229\u7528\u56fe\u7247\u7c7b\u522b\u6807\u7b7e\u6307\u5bfc\u56fe\u50cf\u751f\u6210\u7684\u65b9\u6848\uff0c\u79f0\u4e3a\u00a0classifier guidance\uff0c \u901a\u8fc7\u8fd9\u79cd\u6539\u8fdb\u4f7f\u6269\u6563\u6a21\u578b\u751f\u6210\u56fe\u50cf\u7684\u8d28\u91cf\u5927\u5e45\u63d0\u5347\uff0c\u5e76\u5728 IS \u548c FID \u8bc4\u5206\u4e0a\u8d85\u8fc7\u4e86 GAN \u6a21\u578b\uff0c \u6240\u4ee5\u4f60\u770b\u8bba\u6587\u7684\u540d\u5b57\uff0c\u7b80\u5355\u76f4\u63a5\u3002 <\/p>\n\n\n\n<p>\u8bba\u6587\u7684\u6e90\u7801\u5728\uff1a\u00a0https:\/\/github.com\/openai\/guided-diffusion\u00a0\u3002<\/p>\n\n\n\n<p>    \u5b9e\u9645\u4e0a\u8fd9\u7bc7\u8bba\u6587\u505a\u4e86\u5f88\u591a\u6539\u8fdb\uff0c\u6bd4\u5982\u5bf9UNET\u4e5f\u505a\u4e86\u6539\u8fdb\u3002\u4f46\u8fd9\u91cc\u6211\u4eec\u53ea\u5173\u6ce8 guidance \u90e8\u5206\u3002 \u539f\u8bba\u6587\u7684\u63a8\u5bfc\u8fc7\u7a0b\u6bd4\u8f83\u7e41\u6742\uff0c\u8fd9\u91cc\u6211\u4eec\u91c7\u7528\u53e6\u4e00\u7bc7\u6587\u7ae0\u00a0<a href=\"https:\/\/www.zhangzhenhu.com\/aigc\/Guidance.html#footcite-luo2022understanding\">2<\/a>\u00a0\u7684\u63a8\u5bfc\u65b9\u6848\uff0c \u76f4\u63a5\u4ece score function \u7684\u89d2\u5ea6\u53bb\u7406\u89e3\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"995\" height=\"1024\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-26-995x1024.png\" alt=\"\" class=\"wp-image-15389\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-26-995x1024.png 995w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-26-292x300.png 292w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-26-768x790.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-26.png 1109w\" sizes=\"(max-width: 995px) 100vw, 995px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"624\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-27-1024x624.png\" alt=\"\" class=\"wp-image-15390\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-27-1024x624.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-27-300x183.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-27-768x468.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-27.png 1085w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u867d\u7136\u5f15\u5165&nbsp;classifier guidance&nbsp;\u6548\u679c\u5f88\u660e\u663e\uff0c\u4f46\u7f3a\u70b9\u4e5f\u5f88\u660e\u663e\uff1a<\/p>\n\n\n\n<ol><li>\u9700\u8981\u989d\u5916\u4e00\u4e2a\u5206\u7c7b\u5668\u6a21\u578b\uff0c\u6781\u5927\u589e\u52a0\u4e86\u6210\u672c\uff0c\u5305\u62ec\u8bad\u7ec3\u6210\u672c\u548c\u91c7\u6837\u6210\u672c\u3002<\/li><li>\u5206\u7c7b\u5668\u7684\u7c7b\u522b\u6bd5\u7adf\u662f\u6709\u9650\u96c6\uff0c\u4e0d\u80fd\u6db5\u76d6\u5168\u90e8\u60c5\u51b5\uff0c\u5bf9\u4e8e\u6ca1\u6709\u8986\u76d6\u7684\u6807\u7b7e\u7c7b\u522b\u4f1a\u5f88\u4e0d\u53cb\u597d<\/li><\/ol>\n\n\n\n<p>\u540e\u6765\u300aMore Control for Free! Image Synthesis with Semantic Diffusion Guidance\u300b\u63a8\u5e7f\u4e86\u201cClassifier\u201d\u7684\u6982\u5ff5\uff0c\u4f7f\u5f97\u5b83\u4e5f\u53ef\u4ee5\u6309\u56fe\u3001\u6309\u6587\u6765\u751f\u6210\u3002Classifier-Guidance\u65b9\u6848\u7684\u8bad\u7ec3\u6210\u672c\u6bd4\u8f83\u4f4e\uff08\u719f\u6089NLP\u7684\u8bfb\u8005\u53ef\u80fd\u8fd8\u4f1a\u60f3\u8d77\u4e0e\u4e4b\u5f88\u76f8\u4f3c\u7684PPLM\u6a21\u578b\uff09\uff0c\u4f46\u662f\u63a8\u65ad\u6210\u672c\u4f1a\u9ad8\u4e9b\uff0c\u800c\u4e14\u63a7\u5236\u7ec6\u8282\u4e0a\u901a\u5e38\u6ca1\u90a3\u4e48\u5230\u4f4d\u3002<\/p>\n\n\n\n<h3>2\u3001Classifier-free guidance<\/h3>\n\n\n\n<p>\u5f15\u5bfc\u51fd\u6570\u7684\u65b9\u6cd5\u5b58\u5728\u4e00\u4e9b\u95ee\u9898\uff1a1\uff09\u989d\u5916\u7684\u8ba1\u7b97\u91cf\u6bd4\u8f83\u591a\uff1b2\uff09\u5f15\u5bfc\u51fd\u6570\u548c\u6269\u6563\u6a21\u578b\u5206\u522b\u8fdb\u884c\u8bad\u7ec3\uff0c\u4e0d\u5229\u4e8e\u8fdb\u4e00\u6b65\u6269\u589e\u6a21\u578b\u89c4\u6a21\uff0c\u4e0d\u80fd\u591f\u901a\u8fc7\u8054\u5408\u8bad\u7ec3\u83b7\u5f97\u66f4\u597d\u7684\u6548\u679c\u3002<\/p>\n\n\n\n<ul><li>\u63d0\u51fa\u4e86\u4e00\u4e2a\u7b49\u4ef7\u7684\u7ed3\u6784\u66ff\u6362\u4e86\u5916\u90e8\u7684classifier\uff0c\u4ece\u800c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u4e00\u4e2a\u6269\u6563\u6a21\u578b\u6765\u505a\u6761\u4ef6\u751f\u6210\u4efb\u52a1\u3002<\/li><\/ul>\n\n\n\n<p>\u5b9e\u9645\u505a\u6cd5\u53ea\u662f\u6539\u53d8\u4e86\u6a21\u578b\u8f93\u5165\u7684\u5185\u5bb9\uff0c\u6709conditional(\u968f\u673a\u9ad8\u65af\u566a\u58f0+\u5f15\u5bfc\u4fe1\u606f\u7684embedding)\u548cunconditional\u4e24\u79cd\u91c7\u6837\u8f93\u5165\u3002\u4e24\u79cd\u8f93\u5165\u90fd\u4f1a\u88ab\u9001\u5230\u540c\u4e00\u4e2adiffusion model\uff0c\u4ece\u800c\u8ba9\u5176\u80fd\u591f\u5177\u6709\u65e0\u6761\u4ef6\u548c\u6709\u6761\u4ef6\u751f\u6210\u7684\u80fd\u529b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"671\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-28-1024x671.png\" alt=\"\" class=\"wp-image-15391\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-28-1024x671.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-28-300x196.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-28-768x503.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/07\/image-28.png 1055w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3>3\u3001CLIP Guidance<\/h3>\n\n\n\n<p>Radford, A., Kim, J. W., Hallacy, C., Ramesh, A., Goh, G., Agarwal, S., Sastry, G., Askell, A., Mishkin, P., Clark, J., Krueger, G., and Sutskever, I. Learning transferable visual models from natural language supervision. arXiv:2103.00020, 2021<\/p>\n\n\n\n<p>Prafulla Dhariwal and Alex Nichol. Diffusion models beat gans on image synthesis. 2021.&nbsp;<a href=\"https:\/\/arxiv.org\/abs\/2105.05233\">arXiv:2105.05233<\/a>.[2]<em>(<a href=\"https:\/\/www.zhangzhenhu.com\/aigc\/Guidance.html#id3\">1<\/a>,<a href=\"https:\/\/www.zhangzhenhu.com\/aigc\/Guidance.html#id5\">2<\/a>)<\/em><\/p>\n\n\n\n<p>Calvin Luo. Understanding diffusion models: a unified perspective. 2022.&nbsp;<a href=\"https:\/\/arxiv.org\/abs\/2208.11970\">arXiv:2208.11970<\/a>.[<a href=\"https:\/\/www.zhangzhenhu.com\/aigc\/Guidance.html#id6\">3<\/a>]<\/p>\n\n\n\n<p>Jonathan Ho and Tim Salimans. Classifier-free diffusion guidance. 2022.&nbsp;<a href=\"https:\/\/arxiv.org\/abs\/2207.12598\">arXiv:2207.12598<\/a>.[<a href=\"https:\/\/www.zhangzhenhu.com\/aigc\/Guidance.html#id7\">4<\/a>]<\/p>\n\n\n\n<p>Alex Nichol, Prafulla Dhariwal, Aditya Ramesh, Pranav Shyam, Pamela Mishkin, Bob McGrew, Ilya Sutskever, and Mark Chen. Glide: towards photorealistic image generation and editing with text-guided diffusion models. 2022.&nbsp;<a href=\"https:\/\/arxiv.org\/abs\/2112.10741\">arXiv:2112.10741<\/a>.[<a href=\"https:\/\/www.zhangzhenhu.com\/aigc\/Guidance.html#id8\">5<\/a>]<\/p>\n\n\n\n<p>Aditya Ramesh, Prafulla Dhariwal, Alex Nichol, Casey Chu, and Mark Chen. Hierarchical text-conditional image generation with clip latents. 2022.&nbsp;<a href=\"https:\/\/arxiv.org\/abs\/2204.06125\">arXiv:2204.06125<\/a>.[<a href=\"https:\/\/www.zhangzhenhu.com\/aigc\/Guidance.html#id9\">6<\/a>]<\/p>\n\n\n\n<p>Chitwan Saharia, William Chan, Saurabh Saxena, Lala Li, Jay Whang, Emily Denton, Seyed Kamyar&nbsp;Seyed Ghasemipour, Burcu&nbsp;Karagol Ayan, S.&nbsp;Sara Mahdavi, Rapha&nbsp;Gontijo Lopes, Tim Salimans, Jonathan Ho, David&nbsp;J Fleet, and Mohammad Norouzi. Photorealistic text-to-image diffusion models with deep language understanding. 2022.&nbsp;<a href=\"https:\/\/arxiv.org\/abs\/2205.11487\">arXiv:2205.11487<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53c2\u8003\uff1ahttps:\/\/www.zhangzhenhu.com\/aigc\/Guidance.html \u65e0\u8bba\u662f D &hellip; <a href=\"http:\/\/139.9.1.231\/index.php\/2023\/07\/15\/condition_diff\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u6761\u4ef6\u63a7\u5236\u6269\u6563\u6a21\u578b<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[37,29,9],"tags":[],"_links":{"self":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/15363"}],"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=15363"}],"version-history":[{"count":11,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/15363\/revisions"}],"predecessor-version":[{"id":15393,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/15363\/revisions\/15393"}],"wp:attachment":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/media?parent=15363"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/categories?post=15363"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/tags?post=15363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}