False>>>is_train=False>>>withtorch.set_grad_enabled(is_train):...y=x*2>>>y.requires_grad False>>>torch.set_grad_enabled(True)#thiscan also be usedasafunction>>>y=x*2>>>y.requires_grad True>>>torch.set_grad_enabled(False)>>>y=x*2>>>y.requires_grad False dtypes、devices 及...
5.3 实例化Dataset# 1 创建transform函数# 转换训练数据train_transforms=transforms.Compose([transforms....
Resize(size=(512, 512), interpolation=PIL.Image.BILINEAR) MultiScaleCrop RandomHorizontalFlip(p=0.5) ToTensor() Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]) ) Compose( Warp (size=448, interpolation=2) ToTensor() Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.22...
Manually created transforms: Compose( Resize(size=(224, 224), interpolation=bilinear, max_size=None, antialias=None) ToTensor() Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]) ) (<torch.utils.data.dataloader.DataLoader at 0x7fcb6dd01b50>, <torch.utils.data.dataloader.Dat...
Resize(size=[224, 224], interpolation=bilinear) ToTensor() ) ''' 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 导出图片之后,先将图片迁移至GPU上。 图像导入的时候还需要注意一点:两张图片的形状问题。直接使用上述方式将图片导入之后,图片的形状是由一个...
双线性汇合(bilinear pooling) X = torch.reshape(N, D, H * W)# Assume X has shape N*D*H*W X = torch.bmm(X, torch.transpose(X,1,2)) / (H * W)# Bilinear pooling assertX.size() == (N, D, D) X = torch.reshape(X, (N, D * D)) ...
ratio = self.max_ratio h_new = 32 w_new = h_new * ratio img_resize = img.resize((w_new, h_new), Image.BILINEAR) # 对图片右半边进行padding,使得宽/高比例固定=self.max_ratio img_padd = Image.new('RGB', (32*self.max_ratio, 32), (0,0,0)) img_padd.paste(img_resize, (0...
1.训练数据: Dataset ImageFolder Number of datapoints: 225 Root location: data/pizza_steak_sushi/train StandardTransform Transform: Compose( Resize(size=(64, 64), interpolation=bilinear, max_size=None, antialias=None) RandomHorizontalFlip(p=0.5) ToTensor() ) 2.测试数据: Dataset ImageFolder Number...
[0.5,0.5,0.5])# 创建 transforms 模块中的 Resize 类trans_resize_52x52 = transforms.Resize((80,40))trans_resize_52 = transforms.Resize(200)# 获取 PIL 图像img_path ="E:/code/python/pytorch-learn/dataset/train/ants"\"/6743948_2b8c096dda.jpg "img = Image.open(img_path)# 使用 ...
Syntax of PyTorch resize image transform: torchvision.transforms.Resize(size, interpollation=InterpolationMode.BILINEAR, max_size=None, antialias=None) Parameters: size:size is defined as the desired output size. The size is a series like(h,w) where h is the height and w is the weight of th...