Yep, they probably used an off-the-shelf method for that. It's often called image interpolation or "inpainting" (https://en.wikipedia.org/wiki/Inpainting https

Yep, they probably used an off-the-shelf method for that. It's often called image interpolation or "inpainting" (https://en.wikipedia.org/wiki/Inpainting https://en.wikipedia.org/wiki/Inpainting).