pytorch partial convolution
时间: 2023-11-25 08:51:31 浏览: 142
convolution-vision-transformers:CvT的PyTorch实现
Partial Convolution是一种用于图像修复的卷积神经网络,它可以在修复图像时有效地处理遮挡物。在Partial Convolution中,卷积核中的权重值是根据输入图像中的有效像素计算的,而不是根据整个卷积核的大小计算的。这样,当输入图像中存在遮挡物时,Partial Convolution可以自动忽略遮挡物的影响,从而更好地修复图像。
以下是使用PyTorch实现Partial Convolution的代码示例:
```python
import torch
import torch.nn as nn
import torch.nn.functional as F
class PartialConv(nn.Module):
def __init__(self, in_channels, out_channels, kernel_size, stride=1, padding=0, dilation=1, groups=1, bias=True):
super(PartialConv, self).__init__()
self.conv = nn.Conv2d(in_channels, out_channels, kernel_size, stride, padding, dilation, groups, bias)
self.mask_conv = nn.Conv2d(in_channels, out_channels, kernel_size, stride, padding, dilation, groups, False)
nn.init.constant_(self.mask_conv.weight, 1.0)
def forward(self, x, mask):
output = self.conv(x * mask)
mask = self.mask_conv(mask)
output = output / (mask + 1e-8)
output = output * (mask > 0).float()
return output, mask
```
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