The tutorial shows that Converts a PIL Image or numpy.ndarray (H x W x C) in the range  [0, 255] to a torch.FloatTensor of shape (C x H x W) in the range [0.0, 1.0].So I wanna know why do we have to limit the value to [0, 1] rather than keep the origial value, just to change the tensor shape. This transformation can help it converge faster or any other reason?