that's why it's called supervised learning so you can have various instantiations of this where you could mask out only the central region and try to fill up the central region or you can mask out various square blocks across spread across the image much smaller but lots of mass and you could try to fill them all or you could if you have access to a segment the segmentation mass of actual objects in your image you could segment out particularly the pixels belonging to one particular object like in this case the baseball player and you