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@@ -0,0 +1,56 @@
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+import os
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+# 选择使用0号卡
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+os.environ['CUDA_VISIBLE_DEVICES'] = '0'
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+
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+from paddlex.det import transforms
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+import paddlex as pdx
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+
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+# 下载和解压昆虫检测数据集
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+insect_dataset = 'https://bj.bcebos.com/paddlex/datasets/insect_det.tar.gz'
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+pdx.utils.download_and_decompress(insect_dataset, path='./')
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+
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+# 定义训练和验证时的transforms
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+train_transforms = transforms.Compose([
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+ transforms.MixupImage(mixup_epoch=250),
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+ transforms.RandomDistort(),
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+ transforms.RandomExpand(),
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+ transforms.RandomCrop(),
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+ transforms.Resize(target_size=608, interp='RANDOM'),
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+ transforms.RandomHorizontalFlip(),
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+ transforms.Normalize(),
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+])
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+
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+eval_transforms = transforms.Compose([
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+ transforms.Resize(target_size=608, interp='CUBIC'),
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+ transforms.Normalize(),
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+])
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+
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+# 定义训练和验证所用的数据集
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+train_dataset = pdx.datasets.VOCDetection(
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+ data_dir='insect_det',
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+ file_list='insect_det/train_list.txt',
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+ label_list='insect_det/labels.txt',
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+ transforms=train_transforms,
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+ shuffle=True)
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+eval_dataset = pdx.datasets.VOCDetection(
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+ data_dir='insect_det',
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+ file_list='insect_det/val_list.txt',
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+ label_list='insect_det/labels.txt',
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+ transforms=eval_transforms)
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+
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+# 初始化模型,并进行训练
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+# 可使用VisualDL查看训练指标
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+# VisualDL启动方式: visualdl --logdir output/yolov3_darknet/vdl_log --port 8001
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+# 浏览器打开 https://0.0.0.0:8001即可
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+# 其中0.0.0.0为本机访问,如为远程服务, 改成相应机器IP
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+num_classes = len(train_dataset.labels)
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+model = pdx.det.YOLOv3(num_classes=num_classes, backbone='DarkNet53')
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+model.train(
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+ num_epochs=270,
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+ train_dataset=train_dataset,
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+ train_batch_size=8,
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+ eval_dataset=eval_dataset,
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+ learning_rate=0.000125,
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+ lr_decay_epochs=[210, 240],
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+ save_dir='output/yolov3_darknet53',
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+ use_vdl=True)
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