my image undergoes transforms,so I guess from that i am getting those values
val_loader = torch.utils.data.DataLoader(
                datasets.ImageFolder(valdir, transforms.Compose([
                    transforms.Resize((256, 256)),
                    transforms.CenterCrop(input_size),
                    transforms.ToTensor(),
                    normalize,
                    ])),
                batch_size=args.batch_size, shuffle=False,
                num_workers=args.workers, pin_memory=True)```