title: Algorithm to convert 2d image to 3d image
body: <p>For research purpose, is there any existing algorithm that can transform 2d image to 3d models? For example, transforming a circle into sphere or transforming an image of apple into 3d model of apple. Simple algorithm or imperfect algorithm is fine too. If there isn’t, what are the fields or areas that I should take a look into to know more about it?</p>