 image batch, that will be used as the starting point for the
process.   original_image (torch.FloatTensor or PIL.Image.Image) —
The original image that image was varied from.   mask_image (PIL.Image.Image) —
Image, or tensor representing an image batch, to mask image. White pixels in the mask will be
repainted, while black pixels will be preserved. If mask_image is a PIL image, it will be converted
to a single channel (luminance) before use. I