描述这段代码 class VGGTest(nn.Module): def __init__(self, pretrained=True, numClasses=10): super(VGGTest, self).__init__() # conv1 1/2 self.conv1_1 = nn.Conv2d(3, 64, kernel_size=3, padding=1) self.relu1_1 = nn.ReLU(inplace=True) self.conv1_2 = nn.Conv2d(64, 64, kernel_size=3, padding=1) self.relu1_2 = nn.ReLU(inplace=True) self.pool1 = nn.MaxPool2d(kernel_size=2, stride=2) # conv2 1/4 self.conv2_1 = nn.Conv2d(64, 128, kernel_size=3, padding=1) self.relu2_1 = nn.ReLU(inplace=True) self.conv2_2 = nn.Conv2d(128, 128, kernel_size=3, padding=1) self.relu2_2 = nn.ReLU(inplace=True) self.pool2 = nn.MaxPool2d(kernel_size=2, stride=2) # conv3 1/8 self.conv3_1 = nn.Conv2d(128, 256, kernel_size=3, padding=1) self.relu3_1 = nn.ReLU(inplace=True) self.conv3_2 = nn.Conv2d(256, 256, kernel_size=3, padding=1) self.relu3_2 = nn.ReLU(inplace=True) self.conv3_3 = nn.Conv2d(256, 256, kernel_size=3, padding=1) self.relu3_3 = nn.ReLU(inplace=True) self.pool3 = nn.MaxPool2d(kernel_size=2, stride=2) # conv4 1/16 self.conv4_1 = nn.Conv2d(256, 512, kernel_size=3, padding=1) self.relu4_1 = nn.ReLU(inplace=True) self.conv4_2 = nn.Conv2d(512, 512, kernel_size=3, padding=1) self.relu4_2 = nn.ReLU(inplace=True) self.conv4_3 = nn.Conv2d(512, 512, kernel_size=3, padding=1) self.relu4_3 = nn.ReLU(inplace=True) self.pool4 = nn.MaxPool2d(kernel_size=2, stride=2) # conv5 1/32 self.conv5_1 = nn.Conv2d(512, 512, kernel_size=3, padding=1) self.relu5_1 = nn.ReLU(inplace=True) self.conv5_2 = nn.Conv2d(512, 512, kernel_size=3, padding=1) self.relu5_2 = nn.ReLU(inplace=True) self.conv5_3 = nn.Conv2d(512, 512, kernel_size=3, padding=1) self.relu5_3 = nn.ReLU(inplace=True) self.pool5 = nn.MaxPool2d(kernel_size=2, stride=2)
时间: 2023-08-17 13:05:58 浏览: 103
python使用 __init__初始化操作简单示例
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这段代码定义了一个名为VGGTest的神经网络模型,该模型使用了VGG网络的结构。它包含了5个卷积层和5个最大池化层,每个卷积层后面都跟着一个ReLU激活函数。其中第一个卷积层输入通道数为3,输出通道数为64,卷积核大小为3x3,padding为1,表示输入和输出的大小相同。接下来每个卷积层的输入通道数都为上一层的输出通道数,输出通道数依次是64,128,256,512,512。 每个最大池化层的kernel_size为2,stride为2,表示将输入图像的大小缩小一半。
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