> generate a realistic depth map along with any generated image. There are already pretty good depth map generation algorithms (for a decade or so) which works

> generate a realistic depth map along with any generated image. There are already pretty good depth map generation algorithms (for a decade or so) which works on 2D images. Generate the image, feed it to a depth map generator, viola. However, you can't get it signed by the sensor itself. That'd be hard.