{"id":6562,"date":"2022-08-30T09:51:00","date_gmt":"2022-08-30T01:51:00","guid":{"rendered":"http:\/\/139.9.1.231\/?p=6562"},"modified":"2022-08-29T09:51:44","modified_gmt":"2022-08-29T01:51:44","slug":"nnunet","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2022\/08\/30\/nnunet\/","title":{"rendered":"nnUnet"},"content":{"rendered":"\n<p>github\uff1a <a href=\"https:\/\/github.com\/MIC-DKFZ\/nnUNet\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/github.com\/MIC-DKFZ\/nnUNet<\/a><\/p>\n\n\n\n<p>\u8bba\u6587\u5730\u5740\uff1a <a href=\"https:\/\/arxiv.org\/abs\/1809.10486\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/arxiv.org\/abs\/1809.10486<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"680\" height=\"227\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-423.png\" alt=\"\" class=\"wp-image-6566\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-423.png 680w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-423-300x100.png 300w\" sizes=\"(max-width: 680px) 100vw, 680px\" \/><\/figure>\n\n\n\n<p>\u76f8\u8f83\u4e8e\u5e38\u89c4\u7684\u81ea\u7136\u56fe\u50cf\uff0c\u4ee5UNet\u4e3a\u4ee3\u8868\u7684\u7f16\u89e3\u7801\u7f51\u7edc\u5728\u533b\u5b66\u56fe\u50cf\u5206\u5272\u4e2d\u5e94\u7528\u66f4\u4e3a\u5e7f\u6cdb\u3002\u5e38\u89c1\u7684\u5404\u7c7b\u533b\u5b66\u6210\u50cf\u65b9\u5f0f\uff0c\u5305\u62ec\u8ba1\u7b97\u673a\u65ad\u5c42\u626b\u63cf\uff08Computed Tomography, CT\uff09\u3001\u6838\u78c1\u5171\u632f\u6210\u50cf\uff08Magnetic Resonance Imaging, MRI\uff09\u3001\u8d85\u58f0\u6210\u50cf\uff08Ultrasound Imaging\uff09\u3001X\u5149\u6210\u50cf\uff08X-ray Imaging\uff09\u548c\u5149\u5b66\u76f8\u5e72\u65ad\u5c42\u626b\u63cf\uff08Optical Coherence Tomography, OCT\uff09\u7b49\u3002\u5bf9\u4e8e\u4e34\u5e8a\u800c\u8a00\uff0c\u5f71\u50cf\u5b66\u7684\u68c0\u67e5\u662f\u4e00\u9879\u975e\u5e38\u91cd\u8981\u7684\u8bca\u65ad\u65b9\u5f0f\u3002\u5728\u5404\u7c7b\u6a21\u6001\u7684\u5f71\u50cf\u68c0\u67e5\u4e2d\uff0c\u7cbe\u51c6\u5730\u5bf9\u5404\u79cd\u5668\u5b98\u548c\u75c5\u7076\u8fdb\u884c\u5206\u5272\u662f\u5f71\u50cf\u5206\u6790\u7684\u5173\u952e\u6b65\u9aa4\uff0c\u76ee\u524d\u6df1\u5ea6\u5b66\u4e60\u56fe\u50cf\u5206\u5272\u5728\u5404\u7c7b\u5f71\u50cf\u68c0\u6d4b\u548c\u5206\u5272\u4e2d\u5927\u653e\u5f02\u5f69\u3002\u6bd4\u5982\u57fa\u4e8e\u80f8\u90e8CT\u7684\u80ba\u7ed3\u8282\u68c0\u6d4b\u3001\u57fa\u4e8e\u9885\u5185MR\u5f71\u50cf\u7684\u8111\u80f6\u8d28\u7624\u5206\u5272\u3001\u57fa\u4e8e\u5fc3\u810fCT\u7684\u5de6\u5fc3\u5ba4\u5206\u5272\u3001\u57fa\u4e8e\u7532\u72b6\u817a\u8d85\u58f0\u7684\u7ed3\u8282\u68c0\u6d4b\u548c\u57fa\u4e8eX\u5149\u7684\u80f8\u7247\u80ba\u90e8\u5668\u5b98\u5206\u5272\u7b49\u3002<\/p>\n\n\n\n<p>\u867d\u7136\u57fa\u4e8eUNet\u7684\u7cfb\u5217\u7f16\u89e3\u7801\u5206\u5272\u7f51\u7edc\u5728\u5404\u7c7b\u533b\u5b66\u56fe\u50cf\u5206\u5272\u4e0a\u53d6\u5f97\u4e86\u957f\u8db3\u7684\u8fdb\u5c55\uff0c\u5e76\u4e14\u90e8\u5206\u57fa\u4e8e\u76f8\u5173\u6a21\u578b\u7684\u5e94\u7528\u8bbe\u8ba1\u5df2\u7ecf\u5e7f\u6cdb\u7528\u4e8e\u4e34\u5e8a\u5206\u6790\u4e2d\u3002\u4f46\u533b\u5b66\u5f71\u50cf\u672c\u8eab\u7684\u590d\u6742\u6027\u548c\u5dee\u5f02\u6027\u4e5f\u6781\u5ea6\u5f71\u54cd\u7740\u5206\u5272\u6a21\u578b\u7684\u6cdb\u5316\u6027\u548c\u901a\u7528\u6027\uff0c\u4e3b\u8981\u4f53\u73b0\u5728\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<p>\uff081\uff09\u5404\u7c7b\u6a21\u6001\u7684\u533b\u5b66\u5f71\u50cf\u4e4b\u95f4\u5dee\u5f02\u5927\uff0c\u5982\u7814\u7a76\u961f\u5217\u7684\u5927\u5c0f\u3001\u56fe\u50cf\u5c3a\u5bf8\u548c\u7ef4\u5ea6\u3001\u5206\u8fa8\u7387\u548c\u4f53\u7d20\uff08voxel\uff09\u5f3a\u5ea6\u7b49\u3002<\/p>\n\n\n\n<p>\uff082\uff09\u5206\u5272\u7684\u8bed\u4e49\u6807\u7b7e\u7684\u6781\u5ea6\u4e0d\u5e73\u8861\u3002\u76f8\u8f83\u4e8e\u5f71\u50cf\u4e2d\u7684\u6b63\u5e38\u7ec4\u7ec7\uff0c\u75c5\u53d8\u533a\u57df\u4e00\u822c\u90fd\u53ea\u5360\u6781\u5c11\u90e8\u5206\uff0c\u8fd9\u5c31\u9020\u6210\u4e86\u6b63\u5e38\u7ec4\u7ec7\u7684\u4f53\u7d20\u6807\u7b7e\u4e0e\u75c5\u7076\u7ec4\u7ec7\u7684\u4f53\u7d20\u6807\u7b7e\u4e4b\u95f4\u6781\u5ea6\u7684\u7c7b\u4e0d\u5e73\u5e38\u3002<\/p>\n\n\n\n<p>\uff083\uff09\u4e0d\u540c\u5f71\u50cf\u6570\u636e\u4e4b\u95f4\u7684\u4e13\u5bb6\u6807\u6ce8\u5dee\u5f02\u5927\uff0c\u5e76\u4e14\u4e00\u4e9b\u56fe\u50cf\u7684\u6807\u6ce8\u7ed3\u679c\u4f1a\u5b58\u5728\u6a21\u68f1\u4e24\u53ef\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<p>\uff084\uff09\u4e00\u4e9b\u6570\u636e\u96c6\u5728\u56fe\u50cf\u51e0\u4f55\u548c\u5f62\u72b6\u7b49\u5c5e\u6027\u4e0a\u5dee\u5f02\u660e\u663e\uff0c\u5207\u7247\u4e0d\u5bf9\u9f50\u548c\u5404\u5411\u5f02\u6027\u7684\u95ee\u9898\u4e5f\u975e\u5e38\u4e25\u91cd\u3002<\/p>\n\n\n\n<p>     \u63d0\u51fa\u4e00\u79cd\u9c81\u68d2\u7684\u57fa\u4e8e2D UNet\u548c3D UNet\u7684\u81ea\u9002\u5e94\u6846\u67b6nnUMet\u3002\u4f5c\u8005\u5728\u5404\u79cd\u4efb\u52a1\u4e0a\u62ff\u8fd9\u4e2a\u6846\u67b6\u548c\u76ee\u524d\u7684STOA\u65b9\u6cd5\u8fdb\u884c\u4e86\u6bd4\u8f83\uff0c\u4e14\u8be5\u65b9\u6cd5\u4e0d\u9700\u8981\u624b\u52a8\u8c03\u53c2\u3002\u6700\u7ec8nnUNet\u5f97\u5230\u4e86\u6700\u9ad8\u7684\u5e73\u5747dice\u3002<\/p>\n\n\n\n<p>     \u5f53\u524d\u7684\u533b\u5b66\u56fe\u50cf\u5206\u5272\u88abCNN\u7684\u65b9\u6cd5\u4e3b\u5bfc\uff0c\u4f46\u662f\u5728\u4e0d\u540c\u7684\u4efb\u52a1\u4e0a\u9700\u8981\u4e0d\u540c\u7684\u7ed3\u6784\u548c\u4e0d\u540c\u7684\u8c03\u53c2\u7b56\u7565\u624d\u8fbe\u5230\u4e86\u5404\u81ea\u4efb\u52a1\u7684\u6700\u4f73\uff0c\u8fd9\u4e9b\u5728\u67d0\u4e2a\u4efb\u52a1\u4e0a\u62ff\u5230\u7b2c\u4e00\u7684\u65b9\u6cd5\uff0c\u5728\u5176\u4ed6\u4efb\u52a1\u4e0a\u5374\u4e0d\u884c\u3002<\/p>\n\n\n\n<p>    The Medical Segmentation Decathlon\u8ba1\u5212\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff1a\u5e0c\u671b\u53c2\u8d5b\u8005\u8bbe\u8ba1\u4e00\u79cd\u7b97\u6cd5\uff0c\u572810\u79cd\u6570\u636e\u96c6\u4e0a\u8fdb\u884c\u6d4b\u8bd5\uff0c\u90fd\u80fd\u591f\u8fbe\u5230\u5f88\u597d\u7684\u6548\u679c\uff0c\u800c\u7b97\u6cd5\u4e0d\u80fd\u591f\u9488\u5bf9\u67d0\u79cd\u6570\u636e\u96c6\u8fdb\u884c\u4eba\u4e3a\u7684\u8c03\u6574\uff0c\u53ea\u80fd\u81ea\u52a8\u7684\u53bb\u9002\u5e94\u3002<\/p>\n\n\n\n<p>    \u6bd4\u8d5b\u5206\u4e3a\u4e24\u4e2a\u9636\u6bb5\uff1a\uff081\uff09\u5f00\u53d1\u9636\u6bb5\u53c2\u4e0e\u8005\u62ff\u52307\u4e2a\u6570\u636e\u96c6\u7528\u4e8e\u4f18\u5316\u7b97\u6cd5\uff1b\uff082\uff09\u51bb\u7ed3\u4ee3\u7801\u540e\u516c\u5f00\u5269\u4f59\u76843\u4e2a\u6570\u636e\u96c6\uff0c\u7528\u4e8e\u8bc4\u4f30\u3002<\/p>\n\n\n\n<p>    \u4f5c\u8005\u8ba4\u4e3a\u8fc7\u591a\u7684\u4eba\u4e3a\u8c03\u6574\u7f51\u7edc\u7ed3\u6784\uff0c\u4f1a\u5bfc\u81f4\u5bf9\u4e8e\u7279\u5b9a\u6570\u636e\u96c6\u7684\u8fc7\u62df\u5408\u3002\u975e\u7f51\u7edc\u7ed3\u6784\u65b9\u9762\u7684\u5f71\u54cd\u53ef\u80fd\u5bf9\u4e8e\u5206\u5272\u4efb\u52a1\u5f71\u54cd\u66f4\u5927\u3002<\/p>\n\n\n\n<p>    \u4f5c\u8005\u63d0\u51fa\u4e00\u79cdnnUNet\uff08no-new-Net\uff09\u6846\u67b6\uff0c\u57fa\u4e8e\u539f\u59cb\u7684UNet\uff08\u5f88\u5c0f\u7684\u4fee\u6539\uff09\uff0c\u4e0d\u53bb\u91c7\u7528\u54ea\u4e9b\u65b0\u7684\u7ed3\u6784\uff0c\u5982\u76f8\u6b8b\u5dee\u8fde\u63a5\u3001dense\u8fde\u63a5\u3001\u6ce8\u610f\u529b\u673a\u5236\u7b49\u82b1\u91cc\u80e1\u54e8\u7684\u4e1c\u897f\u3002\u76f8\u53cd\u7684\uff0c\u628a\u91cd\u5fc3\u653e\u5728\uff1a\u9884\u5904\u7406\uff08resampling\u548cnormalization\uff09\u3001\u8bad\u7ec3\uff08loss\uff0coptimizer\u8bbe\u7f6e\u3001\u6570\u636e\u589e\u5e7f\uff09\u3001\u63a8\u7406\uff08patch-based\u7b56\u7565\u3001test-time-augmentations\u96c6\u6210\u548c\u6a21\u578b\u96c6\u6210\u7b49\uff09\u3001\u540e\u5904\u7406\uff08\u5982\u589e\u5f3a\u5355\u8fde\u901a\u57df\u7b49\uff09\u3002<\/p>\n\n\n\n<ul><li><strong>\u7f51\u7edc\u7ed3\u6784<\/strong><\/li><\/ul>\n\n\n\n<p>\u57fa\u7840\u7248UNet\uff1a2D UNet\uff0c3D UNet\uff0cUNet\u7ea7\u8054\uff08\u7b2c\u4e00\u7ea7\u5bf9\u4e0b\u91c7\u6837\u4f4e\u5206\u8fa8\u7387\u56fe\u50cf\u8fdb\u884c\u7c97\u5206\u5272\uff0c\u7b2c\u4e8c\u7ea7\u7ed3\u5408\u7b2c\u4e00\u7ea7\u7684\u7ed3\u679c\u8fdb\u884c\u5fae\u8c03\uff0c\u4e24\u7ea7\u90fd\u75283DUNet\uff09<\/p>\n\n\n\n<p>\u5fae\u5c0f\u4fee\u6539\uff1a<\/p>\n\n\n\n<p>\uff081\uff09ReLU\u6362 leaky ReLU\uff08neg.slope 1e-2\uff09\uff1b<\/p>\n\n\n\n<p>\uff082\uff09Batch Norm\u6362Instance Norm<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"673\" height=\"327\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-424.png\" alt=\"\" class=\"wp-image-6576\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-424.png 673w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-424-300x146.png 300w\" sizes=\"(max-width: 673px) 100vw, 673px\" \/><figcaption>\u56fe1 UNet Cascade. Stage1:\u4e0b\u91c7\u6837\u6570\u636e\u4e0a\u8fdb\u884c\u7c97\u5206\u5272\uff1bStage2\uff1a\u5206\u5272\u7ed3\u679c\u548c\u539f\u56feconcat\u9001\u5165\u7b2c\u4e8c\u4e2a\u7f51\u7edc\u8fdb\u884crefine<\/figcaption><\/figure>\n\n\n\n<p>\u7f51\u7edc\u62d3\u6251\u81ea\u9002\u5e94\uff1a\u8f93\u5165\u56fe\u50cf\u5c3a\u5bf8\u4f1a\u6709\u4e0d\u540c\uff0c\u800c\u786c\u4ef6\u7684\u8d44\u6e90\u662f\u6709\u9650\u7684\uff0c\u56e0\u6b64\u9700\u8981\u5728\u7f51\u7edc\u5bb9\u91cf\u548cBatch-size\u4e0a\u505a\u5230\u6743\u8861\u3002<\/p>\n\n\n\n<p><em>\u9ed8\u8ba4\u53c2\u6570\u8bbe\u7f6e\uff1a<\/em><\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>2D UNet\uff1acrop-size&lt;=256&#215;256\uff08\u4e2d\u503c\u5c3a\u5bf8\u5c0f\u4e8e256\u65f6\uff0c\u91c7\u7528\u4e2d\u503c\u5c3a\u5bf8\uff09; batch-size&lt;=42; base-channel=30; pooling to size&gt;=8; pooling_num&lt;6<br>3D UNet: crop-size&lt;=128x128x128\uff08\u4e2d\u503c\u5c3a\u5bf8\u5c0f\u4e8e128\u65f6\uff0c\u91c7\u7528\u4e2d\u503c\u5c3a\u5bf8\uff09; batch-size&gt;=2; base_channel=30; pooling to size&gt;=8; pooling<em>num&lt;6<\/em><\/p><\/blockquote>\n\n\n\n<ul><li><strong>\u9884\u5904\u7406<\/strong><\/li><\/ul>\n\n\n\n<p><strong>\u6574\u4f53\u6570\u636eCrop<\/strong>\uff1a\u53ea\u5728\u975e\u96f6\u533a\u57df\u5185crop\uff0c\u51cf\u5c11\u8ba1\u7b97\u6d88\u8017<\/p>\n\n\n\n<p><strong>Resample<\/strong>\uff1a\u6570\u636e\u96c6\u4e2d\u5b58\u5728\u4e0d\u540cspacing\u7684\u6570\u636e\uff0c\u9ed8\u8ba4\u81ea\u52a8\u5f52\u4e00\u5316\u5230\u6570\u636e\u96c6\u6240\u6709\u6570\u636espacing\u7684\u4e2d\u503cspacing\u3002\u539f\u59cb\u6570\u636e\u4f7f\u7528\u4e09\u9636spline\u63d2\u503c\uff1bMask\u4f7f\u7528\u6700\u90bb\u8fd1\u63d2\u503c\u3002<\/p>\n\n\n\n<p>UNet Cascade\u91c7\u7528\u7279\u6b8a\u7684Resample\u7b56\u7565\uff1a\u4e2d\u503c\u5c3a\u5bf8\u5927\u4e8e\u663e\u5b58\u9650\u5236\u4e0b\u53ef\u5904\u7406\u5c3a\u5bf8\u76844\u500d\u65f6\uff08batch-size=2\uff09\uff0c\u91c7\u7528\u7ea7\u8054\u7b56\u7565\uff0c\u5bf9\u6570\u636e\u8fdb\u884c\u4e0b\u91c7\u6837\uff08\u91c7\u68372\u7684\u500d\u6570\uff0c\u76f4\u5230\u6ee1\u8db3\u524d\u9762\u7684\u8981\u6c42\uff09\uff1b\u5982\u679c\u6570\u636e\u5206\u8fa8\u7387\u4e09\u4e2a\u8f74\u65b9\u5411\u4e0d\u76f8\u7b49\uff0c\u5148\u964d\u91c7\u6837\u9ad8\u5206\u8fa8\u7387\u8f74\u4f7f\u5f97\u4e09\u8f74\u76f8\u7b49\uff0c\u518d\u4e09\u8f74\u540c\u65f6\u964d\u91c7\u6837\u76f4\u5230\u6ee1\u8db3\u4e0a\u8ff0\u8981\u6c42\u3002<\/p>\n\n\n\n<p><strong>Normalization<\/strong>\uff1a<\/p>\n\n\n\n<p>CT\uff1a\u901a\u8fc7\u7edf\u8ba1\u6574\u4e2a\u6570\u636e\u96c6\u4e2dmask\u5185\u50cf\u7d20\u7684HU\u503c\u8303\u56f4\uff0cclip\u51fa[0.05,99.5]\u767e\u5206\u6bd4\u8303\u56f4\u7684HU\u503c\u8303\u56f4\uff0c\u7136\u540e\u4f7f\u7528z-score\u65b9\u6cd5\u8fdb\u884c\u5f52\u4e00\u5316\uff1b<\/p>\n\n\n\n<p>MR\uff1a\u5bf9\u6bcf\u4e2a\u60a3\u8005\u6570\u636e\u5355\u72ec\u6267\u884cz-score\u5f52\u4e00\u5316\u3002<\/p>\n\n\n\n<p>\u5982\u679ccrop\u5bfc\u81f4\u6570\u636e\u96c6\u7684\u5e73\u5747\u5c3a\u5bf8\u51cf\u5c0f\u52301\/4\u751a\u81f3\u66f4\u5c0f\uff0c\u5219\u53ea\u5728mask\u5185\u6267\u884c\u6807\u51c6\u5316\uff0cmask\u8bbe\u7f6e\u4e3a0.<\/p>\n\n\n\n<ul><li><strong>\u8bad\u7ec3\u8fc7\u7a0b<\/strong><\/li><\/ul>\n\n\n\n<p>\u4ece\u5934\u8bad\u7ec3\uff0c\u4f7f\u7528\u4e94\u6298\u4ea4\u53c9\u9a8c\u8bc1\uff0closs\u51fd\u6570\uff1a\u7ed3\u5408dice loss\u548c\u4ea4\u53c9\u71b5loss\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" width=\"315\" height=\"63\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-425.png\" alt=\"\" class=\"wp-image-6581\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-425.png 315w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-425-300x60.png 300w\" sizes=\"(max-width: 315px) 100vw, 315px\" \/><\/figure><\/div>\n\n\n\n<p>\u5bf9\u4e8e\u5728\u5168\u8bad\u7ec3\u96c6\u4e0a\u8bad\u7ec3\u76843D-UNet\uff08UNet Cascade\u7684\u7b2c\u4e00\u9636\u6bb5\u548c\u975e\u7ea7\u8054\u76843D UNet\uff0c\u4e0d\u5305\u62ecUNet Cascade\u7684\u7b2c\u4e8c\u9636\u6bb5\uff09\uff0c\u5bf9\u6bcf\u4e00\u4e2a\u6837\u672c\u5355\u72ec\u8ba1\u7b97dice loss\uff0c\u7136\u540e\u5728batch\u4e0a\u53bb\u5e73\u5747\u3002\u5bf9\u5176\u4ed6\u7684\u7f51\u7edc\uff082D UNet\u548cUNet Cascade\u7684\u7b2c\u4e8c\u9636\u6bb5\uff09\uff0c\u5c06\u4e00\u4e2abatch\u5185\u7684\u6240\u6709\u6837\u672c\u5f53\u505a\u4e00\u4e2a\u6574\u4f53\u7684\u6837\u672c\u8ba1\u7b97\u6574\u4e2abatch\u4e0a\u7684dice\uff08\u9632\u6b62\u5f53crop\u540e\u51fa\u73b0\u5c40\u90e8\u533a\u57df\u5185\u4e0d\u5b58\u5728\u67d0\u4e00\u7c7b\u65f6\u5355\u72ec\u8ba1\u7b97\u8be5\u7c7bloss\u5bfc\u81f4\u5206\u6bcd\u4e3a\u96f6\u7684\u60c5\u51b5\uff0c\u8fd9\u4e5f\u8981\u4fdd\u8bc1batch-size\u4e0d\u80fd\u592a\u5c0f\uff09\u3002<\/p>\n\n\n\n<p>dice loss\u5f62\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" width=\"560\" height=\"92\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-426.png\" alt=\"\" class=\"wp-image-6585\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-426.png 560w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/08\/image-426-300x49.png 300w\" sizes=\"(max-width: 560px) 100vw, 560px\" \/><\/figure><\/div>\n\n\n\n<p>\u5176\u4e2du\u4e3a\u6982\u7387\u8f93\u51fa\uff08softmax output\uff09\uff0cv\u4e3a\u786c\u7f16\u7801\uff08one hot encoding\uff09\u7684ground truth\u3002K\u4e3a\u591a\u5206\u7c7b\u7c7b\u522b\u6570\u3002<\/p>\n\n\n\n<p><strong>\u5176\u4ed6\u8bad\u7ec3\u53c2\u6570<\/strong><em>\uff1a<\/em><\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>Adam\u4f18\u5316\u5668\uff0c\u5b66\u4e60\u73873e-4\uff1b250\u4e2abatch\/epoch\uff1b<br>\u5b66\u4e60\u7387\u8c03\u6574\u7b56\u7565\uff1a\u8ba1\u7b97\u8bad\u7ec3\u96c6\u548c\u9a8c\u8bc1\u96c6\u7684\u6307\u6570\u79fb\u52a8\u5e73\u5747loss\uff0c\u5982\u679c\u8bad\u7ec3\u96c6\u7684\u6307\u6570\u79fb\u52a8\u5e73\u5747loss\u572830\u4e2aepoch\u5185\u51cf\u5c11\u4e0d\u591f5e-3\uff0c\u5219\u5b66\u4e60\u7387\u8870\u51cf5\u500d\uff1b<br>\u8bad\u7ec3\u505c\u6b62\u6761\u4ef6\uff1a\u5f53\u9a8c\u8bc1\u96c6\u6307\u6570\u79fb\u52a8\u5e73\u5747loss\u572860\u4e2aepoch\u5185\u51cf\u5c11\u4e0d\u591f5e-3\uff0c\u6216\u8005\u5b66\u4e60\u7387\u5c0f\u4e8e1e-6\uff0c\u5219\u505c\u6b62\u8bad\u7ec3\u3002<\/p><\/blockquote>\n\n\n\n<p><strong>\u6570\u636e\u589e\u5e7f<\/strong>\uff1a\u968f\u673a\u65cb\u8f6c\u3001\u968f\u673a\u7f29\u653e\u3001\u968f\u673a\u5f39\u6027\u53d8\u6362\u3001\u4f3d\u9a6c\u6821\u6b63\u3001\u955c\u50cf\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>1.\u5982\u679c3D UNet\u7684\u8f93\u5165patch\u7684\u5c3a\u5bf8\u7684\u6700\u5927\u8fb9\u957f\u662f\u6700\u77ed\u8fb9\u957f\u7684\u4e24\u500d\u4ee5\u4e0a\uff0c\u90a3\u4e48\u5e94\u7528\u4e09\u7ef4\u6570\u636e\u6269\u5145\u53ef\u80fd\u662f\u6b21\u4f18\u7684\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\u53ef\u4ee5\u4f7f\u75282D\u7684\u6570\u636e\u589e\u5e7f\u3002<br>2.UNet Cascade\u7684stage 2\u63a5\u6536\u524d\u4e00\u9636\u6bb5\u7684\u8f93\u51fa\u4f5c\u4e3a\u8f93\u5165\u7684\u4e00\u90e8\u5206\uff0c\u4e3a\u4e86\u9632\u6b62\u5f3aco-adaptation\uff0c\u6211\u4eec\u53ef\u4ee5\u5e94\u7528\u968f\u673a\u5f62\u6001\u5b66\u64cd\u4f5c\uff08erode\u3001dilate\u3001open\u3001close\uff09\uff0c\u968f\u673a\u7684\u53bb\u9664\u6389\u4e00\u4e9b\u5206\u5272\u7ed3\u679c\u7684\u8fde\u901a\u57df\u3002<\/p><\/blockquote>\n\n\n\n<p><strong>patch\u91c7\u6837\uff1a<\/strong>\u4e3a\u4e86\u589e\u52a0\u7f51\u7edc\u7684\u7a33\u5b9a\u6027\uff0cpatch\u91c7\u6837\u7684\u65f6\u5019\u4f1a\u4fdd\u8bc1\u4e00\u4e2abatch\u7684\u6837\u672c\u4e2d\u6709\u8d85\u8fc71\/3\u7684\u50cf\u7d20\u662f\u524d\u666f\u7c7b\u7684\u50cf\u7d20\u3002\u8fd9\u4e2a\u5f88\u5173\u952e\uff0c\u5426\u5219\u4f60\u7684\u524d\u666fdice\u4f1a\u6536\u655b\u7684\u5f88\u6162\u3002<\/p>\n\n\n\n<ul><li><strong>\u63a8\u7406\uff08Inference\uff09<\/strong><\/li><\/ul>\n\n\n\n<p>\u6240\u6709\u7684\u63a8\u7406\u90fd\u662f\u57fa\u4e8epatch\u7684\u3002<\/p>\n\n\n\n<p>patch\u7684\u8fb9\u754c\u4e0a\u7cbe\u5ea6\u4f1a\u6709\u635f\uff0c\u56e0\u6b64\u5728\u5bf9patch\u91cd\u53e0\u5904\u7684\u50cf\u7d20\u8fdb\u884cfuse\u65f6\uff0c\u8fb9\u754c\u7684\u50cf\u7d20\u6743\u91cd\u4f4e\uff0c\u4e2d\u5fc3\u7684\u50cf\u7d20\u6743\u91cd\u9ad8\uff1bpatch\u91cd\u53e0\u7684stride\u4e3asize\/2\uff1b\u4f7f\u7528test-data-augmentation\uff08\u589e\u5e7f\u65b9\u5f0f\uff1a\u7ed5\u5404\u4e2a\u8f74\u7684\u955c\u50cf\u589e\u5e7f\uff09\uff1b\u4f7f\u7528\u4e865\u4e2a\u8bad\u7ec3\u7684\u6a21\u578b\u96c6\u6210\u8fdb\u884c\u63a8\u7406\uff085\u4e2a\u6a21\u578b\u662f\u901a\u8fc75\u6298\u4ea4\u53c9\u9a8c\u8bc1\u4ea7\u751f\u76845\u4e2a\u6a21\u578b\uff09<\/p>\n\n\n\n<ul><li><strong>\u540e\u5904\u7406<\/strong><\/li><\/ul>\n\n\n\n<p>\u4e3b\u8981\u5c31\u662f\u4f7f\u7528\u8fde\u901a\u57df\u5206\u6790<\/p>\n","protected":false},"excerpt":{"rendered":"<p>github\uff1a https:\/\/github.com\/MIC-DKFZ\/nnUNet \u8bba\u6587\u5730\u5740\uff1a https: &hellip; <a href=\"http:\/\/139.9.1.231\/index.php\/2022\/08\/30\/nnunet\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">nnUnet<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[24],"tags":[],"_links":{"self":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/6562"}],"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=6562"}],"version-history":[{"count":26,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/6562\/revisions"}],"predecessor-version":[{"id":6592,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/6562\/revisions\/6592"}],"wp:attachment":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/media?parent=6562"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/categories?post=6562"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/tags?post=6562"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}