ImageNet2012數據集的均值和方差

 normalize = transforms.Normalize(mean=[0.485, 0.456, 0.406],
                                     std=[0.229, 0.224, 0.225])

          mean均值：[0.485, 0.456, 0.406]
          std標準差：[0.229, 0.224, 0.225]