The idea is to remove the real and add virtual. Guess how would we do it. And the answer is Image Inpainting + Augmented Reality.
Image Inpainting is a technique to select an part of an image or videos and replace it with the pixels that are nearby that part of image. It appears as if you have removed some particular object from image or video.
Image Inpainting can be used alongwith augmented reality to do magics like you can remove real objects from live video or real time images and replace it with virtual 3D models. It means that you have the freedom to add virtual and remove real.