{"id":17974,"date":"2022-12-13T09:00:00","date_gmt":"2022-12-13T01:00:00","guid":{"rendered":"https:\/\/www.circuspi.com\/?p=17974"},"modified":"2022-12-12T14:04:55","modified_gmt":"2022-12-12T06:04:55","slug":"jetson-nano-dli-image-regression","status":"publish","type":"post","link":"https:\/\/www.circuspi.com\/index.php\/2022\/12\/13\/jetson-nano-dli-image-regression\/","title":{"rendered":"Jetson Nano DLI \u6559\u5b78(\u4e09)\uff1aImage Regression \u5f71\u50cf\u56de\u6b78"},"content":{"rendered":"\n<p><style>\n\/* ###\u5be6\u9a57\u4e0b\u4e00\u5217### *\/\n\na:link {color:#0695e4\n;}    \/* \u8a2d\u5b9a\u5c1a\u672a\u9ede\u95b1\u904e\u7684\u9023\u7d50\u6a23\u5f0f *\/\na:visited {color:#0695e4\n;} \/* \u8a2d\u5b9a\u904e\u53bb\u66fe\u7d93\u95b1\u904e\u7684\u9023\u7d50 *\/\na:hover {color:#0695e4\n;}   \/* \u8a2d\u5b9a\u6ed1\u9f20\u6e38\u6a19\u6307\u5728\u9023\u7d50\u4f4d\u7f6e\u4e0a\u7684\u6a23\u5f0f *\/\na:active {color:#0000BB;}  \/* \u8a2d\u5b9a\u4e0a\u9ede\u64ca\u904e\u7684\u9023\u7d50\u6a23\u5f0f *\/\n<\/style><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"527\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2022\/12\/JetsonNano_DLICH3_L.jpg\" alt=\"Jetson Nano DLI \u6559\u5b78(\u4e09)\uff1aImage Regression \u5f71\u50cf\u56de\u6b78\" class=\"wp-image-18161\"\/><\/figure><\/div>\n\n\n\n<p>Jetson Nano DLI \u6559\u5b78\u7b2c\u4e09\u90e8\u5206 Image Regression \u5f71\u50cf\u56de\u6b78\u3002\u5927\u5bb6\u61c9\u8a72\u6709\u807d\u904e\u6578\u503c\u7684\u8ff4\u6b78\u5206\u6790\uff0c\u4f46\u5f71\u50cf\u56de\u6b78\u5c31\u6bd4\u8f03\u5c11\u898b\u4e86\u5427\uff1f\u5f71\u50cf\u56de\u6b78\u7b97\u662f\u76f8\u7576\u6709\u8da3 <s>\uff0c\u5373\u4fbf\u4ed6\u53ef\u80fd\u5be6\u7528\u6027\u4e0d\u7b97\u592a\u597d\uff08\u5582\uff09<\/s> \u3002\u53ef\u4ee5\u7528\u4f86\u5b9a\u4f4d\u5716\u50cf\u4e0a\u7279\u5fb5\u7684\u5ea7\u6a19\uff0c\u5f8c\u9762\u5728 Jetbot \u5c08\u6848\u4e0a\u4e5f\u6709\u4f7f\u7528\u5230\uff0c\u73fe\u5728\u5c31\u8b93\u6211\u5011\u518d\u719f\u6089\u4e00\u4e0b CNN \u795e\u7d93\u7db2\u8def\uff0cLet\u2019s GO!<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/images.unsplash.com\/photo-1578489758854-f134a358f08b?ixlib=rb-1.2.1&amp;q=80&amp;cs=tinysrgb&amp;fm=jpg&amp;crop=entropy\" alt=\"Jetson Nano DLI \u6559\u5b78(\u4e09)\uff1aImage Regression \u5f71\u50cf\u56de\u6b78\" width=\"593\" height=\"395\"\/><figcaption>\u81c9\u90e8\u7279\u5fb5\u56de\u6b78 (source: Unsplash)<\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u5f71\u50cf\u5206\u985e\u8207\u5f71\u50cf\u56de\u6b78\u7684\u5dee\u7570<\/h2>\n\n\n\n<p>\u5728 Jetson Nano DLI \u6559\u5b78(\u4e8c)\u5f71\u50cf\u5206\u985e\u4e2d\uff0c\u6a21\u578b\u6700\u7d42\u7684\u8f38\u51fa\u7d50\u679c\u662f N \u500b\u985e\u5225\u7684\u53ef\u80fd\u6027\uff0c\u5176\u53ef\u80fd\u6027\u52a0\u7e3d\u70ba 1\u3002\u800c\u672c\u6b21\u5f71\u50cf\u56de\u6b78\u7684\u7bc4\u4f8b\u8a66\u5716\u627e\u51fa\u4eba\u81c9\u4e2d\u9f3b\u5b50\u3001\u5de6\u773c\u3001\u53f3\u773c\u7684\u4f4d\u7f6e\uff0c\u56e0\u6b64\u5404\u9808\u8981 X \u8207 Y \u5ea7\u6a19\u53bb\u6a19\u8a18\uff0c\u4e5f\u56e0\u6b64\u795e\u7d93\u7db2\u8def\u7684\u8f38\u51fa\u8981\u6709\u516d\u500b\u6578\u503c\uff0c\u5206\u5225\u662f\u4e09\u500b\u7279\u5fb5\u503c\u7684 X-Y \u5ea7\u6a19\uff0c\u52a0\u7e3d\u4e26\u4e0d\u6703\u7b49\u65bc 1\u3002<\/p>\n\n\n\n<p>\u800c\u5728\u6a21\u578b\u8a2d\u5b9a\u57fa\u672c\u4e0a\u548c\u5f71\u50cf\u5206\u985e\u5927\u540c\u5c0f\u7570\uff0c\u4e5f\u662f\u4f7f\u7528\u9077\u79fb\u5b78\u7fd2\u4e26\u4e14\u8abf\u6574\u5f8c\u9762\u5168\u9023\u63a5\u5c64(Fully Connected Layer)\u7684\u8f38\u51fa\uff0c\u53ef\u4ee5\u81ea\u7531\u9078\u7528\u8981\u9078\u7528\u54ea\u500b\u6a21\u578b\u4f86\u4f7f\u7528\u3002\u53ea\u4e0d\u904e\u8aa0\u5982\u524d\u6bb5\u6558\u8ff0\uff0c\u8f38\u51fa\u7684\u6578\u503c\u6703\u7531 n \u500b\u985e\u5225\uff0c\u6539\u70ba n \u500b\u7279\u5fb5\u503c\u4e58 2\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>device = torch.device('cuda')\noutput_dim = 2 * len(dataset.categories)  # x, y coordinate for each category\n\n# ALEXNET\n# model = torchvision.models.alexnet(pretrained=True)\n# model.classifier&#91;-1] = torch.nn.Linear(4096, output_dim)\n\n# SQUEEZENET \n# model = torchvision.models.squeezenet1_1(pretrained=True)\n# model.classifier&#91;1] = torch.nn.Conv2d(512, output_dim, kernel_size=1)\n# model.num_classes = len(dataset.categories)\n\n# RESNET 18\nmodel = torchvision.models.resnet18(pretrained=True)\nmodel.fc = torch.nn.Linear(512, output_dim)\n\n# RESNET 34\n# model = torchvision.models.resnet34(pretrained=True)\n# model.fc = torch.nn.Linear(512, output_dim)\n\nmodel = model.to(device)\n<\/code><\/pre>\n\n\n\n<p>\u6b64\u5916\u5728\u640d\u5931\u51fd\u6578\u7684\u8a08\u7b97\u4e5f\u6703\u6709\u6240\u4e0d\u540c\uff0c\u7531\u65bc\u6bcf\u500b\u8a13\u7df4\u8cc7\u6599\u90fd\u6703\u6a19\u8a18\u7279\u5fb5\u7684 X-Y \u5ea7\u6a19\uff0cCNN \u6a21\u578b\u7b97\u51fa\u7684 X-Y \u5ea7\u6a19\u548c\u5be6\u969b X-Y \u5ea7\u6a19\u7684\u5dee\u7570\uff0c\u5c31\u662f\u6211\u5011\u7684\u8aa4\u5dee\u4e86\uff0c\u5982\u4e0b\u5716\u6240\u793a\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/massive-danthus-1c2.notion.site\/image\/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F2fcc0b31-8f11-415a-aba2-f58f67e6d3fc%2FUntitled.png?table=block&amp;id=06bec9ae-b96f-483e-9212-ef45fafa8481&amp;spaceId=b4fd4f91-6283-40d5-bc09-2016e5fc107b&amp;width=1620&amp;userId=&amp;cache=v2\" alt=\"Jetson Nano DLI \u6559\u5b78(\u4e09)\uff1aImage Regression \u5f71\u50cf\u56de\u6b78\" width=\"522\" height=\"428\"\/><figcaption>\u640d\u5931\u51fd\u6578\u8a08\u7b97<br>(source: NVIDIA Developer youtube channel)<\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u8cc7\u6599\u6536\u96c6<\/h2>\n\n\n\n<p>\u4f9d\u5e8f\u57f7\u884c\u7a0b\u5f0f\u78bc\u76f4\u5230\u300c<strong>\u986f\u793a\u4e92\u52d5\u5f0f\u5de5\u5177\uff01<\/strong>\u300d\u6bb5\u843d\uff0c\u5c31\u6703\u986f\u793a\u4e92\u52d5\u5f0f\u7684 widget \u53ef\u4ee5\u9032\u884c\u64cd\u4f5c\u3002\u52a0\u5165\u8a13\u7df4\u8cc7\u6599\u7684\u65b9\u5f0f\u9808\u9078\u64c7\u597d<strong>\u8cc7\u6599\u96c6 dataset<\/strong> \u8207<strong>\u985e\u5225 category<\/strong>\uff0c\u7136\u5f8c\u5728\u5373\u6642\u9810\u89bd\u7684\u5f71\u50cf\u756b\u9762\u4e2d\u9ede\u9078\u7279\u5fb5\u4f4d\u7f6e\uff0c\u5b8c\u6210\u5c31\u6703\u770b\u5230\u4e00\u500b\u5713\u5708\u5c31\u662f\u88ab\u9078\u5b9a\u7684 X-Y \u5ea7\u6a19\u3002 \u4f9d\u5e8f\u6a19\u8a18\u9f3b\u5b50\u3001\u5de6\u773c\u3001\u53f3\u773c\u7684\u4f4d\u7f6e\uff0c\u5404\u6a19\u8a18 40~50 \u5f35\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/massive-danthus-1c2.notion.site\/image\/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F717840dc-faa6-4fa9-829e-166aabadb615%2FUntitled.png?table=block&amp;id=0560ad4f-7400-413f-9967-c9b9486a3647&amp;spaceId=b4fd4f91-6283-40d5-bc09-2016e5fc107b&amp;width=1980&amp;userId=&amp;cache=v2\" alt=\"Jetson Nano DLI \u6559\u5b78(\u4e09)\uff1aImage Regression \u5f71\u50cf\u56de\u6b78\" width=\"688\" height=\"405\"\/><\/figure><\/div>\n\n\n\n<p>\u53e6\u5916\u503c\u5f97\u4e00\u63d0\u7684\u662f\uff0c\u4e0d\u77e5\u9053\u5404\u4f4d\u6709\u6c92\u6709\u6ce8\u610f\u5230\uff0c\u6211\u5011\u6240\u8868\u8a18\u7684\u7279\u5fb5\u5ea7\u6a19\u9019\u500b meta \u8cc7\u6599\uff0c\u662f\u5982\u4f55\u5132\u5b58\u7684\u5462\uff1f\u5728\u9019\u7bc4\u4f8b\u4e2d\u4f7f\u7528\u4e86\u4e00\u500b\u5c0f trick \uff0c\u5728\u5132\u5b58\u5f71\u50cf\u8cc7\u6599\u6642\uff0c\u6240\u5132\u5b58\u7684\u6a94\u6848\u540d\u7a31\u7684\u683c\u5f0f\u70ba xxx_yyy_UUID.jpg\u3002\u4e5f\u5c31\u662f\u76f4\u63a5\u628a\u9019 meta \u653e\u5728\u6a94\u540d\u7684\u524d\u7db4\uff0c\u4e4b\u5f8c\u518d\u8a13\u7df4\u6a21\u578b\u6642\uff0c\u53ea\u8981\u518d\u628a\u9019\u500b\u524d\u8f1f X-Y \u5ea7\u6a19\u5206\u96e2\u51fa\u4f86\u5373\u53ef\u3002\u9019\u6a23\u7684\u65b9\u5f0f\u53ef\u4ee5\u7701\u53bb\u984d\u5916\u7684 meta file\uff0c\u4e26\u4e14\u5728 meta \u8cc7\u6599\u91cf\u5c0f\u7684\u60c5\u5883\u76f8\u7576\u597d\u7528\uff0c\u53ef\u4ee5\u5077\u5077\u5b78\u8d77\u4f86\uff01\u2026_\u3006(\u00b0\u25bd\u00b0*)<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/massive-danthus-1c2.notion.site\/image\/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2Fe5a67686-a47c-4414-a40a-417f83ded6a0%2FUntitled.png?table=block&amp;id=94150b78-70eb-4a73-8275-7f4d744a2786&amp;spaceId=b4fd4f91-6283-40d5-bc09-2016e5fc107b&amp;width=1810&amp;userId=&amp;cache=v2\" alt=\"Jetson Nano DLI \u6559\u5b78(\u4e09)\uff1aImage Regression \u5f71\u50cf\u56de\u6b78\" width=\"657\" height=\"482\"\/><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u6a21\u578b\u8a13\u7df4\u8207\u8a55\u4f30<\/h2>\n\n\n\n<p>\u6a21\u578b<strong>\u8a13\u7df4\u6b21\u6578 epochs<\/strong> \u4e00\u6a23\u53ef\u4ee5\u5148\u6293 5~10 \u6b21\u770b\u770b\u6548\u679c\u5982\u4f55\uff0c\u518d\u9032\u884c\u91cd\u8907\u8a13\u7df4\uff0c\u8a13\u7df4\u5b8c\u6210\u7684\u6a21\u578b\u4e00\u6a23\u53ef\u4ee5\u5132\u5b58\u70ba pytorch \u7684\u6a21\u578b\u6a94\uff0c\u4e26\u4e14\u53ef\u4ee5\u4f7f\u7528 live \u529f\u80fd\u505a\u5373\u6642\u7684\u76e3\u770b\uff0c\u770b\u770b\u6a21\u578b\u7b97\u51fa\u4f86\u7279\u5fb5\u5ea7\u6a19\u662f\u5426\u6eff\u610f\u3002\u82e5\u662f\u6548\u679c\u4e0d\u6eff\u610f\uff0c\u5247\u9808\u8981\u56de\u53bb\u8abf\u6574\u8cc7\u6599\u96c6\uff0c\u4e5f\u8a31\u662f\u6a19\u8a18\u7279\u5fb5\u7684 X-Y \u5ea7\u6a19\u6709\u8aa4\u5dee\uff0c\u6216\u662f\u8cc7\u6599\u91cf\u4e0d\u5920\uff0c\u90fd\u6709\u53ef\u80fd\u5f71\u97ff\u6a21\u578b\u7684\u8f38\u51fa\u7d50\u679c\uff0c\u9019\u90e8\u5206\u5c31\u7559\u7d66\u5404\u4f4d\u53bb\u5617\u8a66\u770b\u770b\u4e86\uff01<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/massive-danthus-1c2.notion.site\/image\/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2Fbee2758b-b01c-4375-b5ce-d59272c79b6c%2FUntitled.png?table=block&amp;id=4fab9f6d-e799-426f-9bda-4cbc26b5c983&amp;spaceId=b4fd4f91-6283-40d5-bc09-2016e5fc107b&amp;width=1970&amp;userId=&amp;cache=v2\" alt=\"Jetson Nano DLI \u6559\u5b78(\u4e09)\uff1aImage Regression \u5f71\u50cf\u56de\u6b78\" width=\"708\" height=\"407\"\/><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u5c0f\u7d50<\/h2>\n\n\n\n<p>Jetson Nano DLI \u6559\u5b78\u7cfb\u5217\u5230\u9019\u7bc7\u5c31\u544a\u4e00\u6bb5\u843d\u4e86\uff0c\u9019\u5169\u500b\u7bc4\u4f8b\u90fd\u662f\u4f7f\u7528 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