[Dark Crypto]

that compares a image to the frames of an animation for example, and removes anything that is the same, because i dont have a camera that plugs into the PC, i only got a webcam so i cant take vides outside on a crappy home made blue or greenscreen because theres no room in the house

basically i saw this done on tv but with xrays, it compares two images or an image plus frames and keys out things that are the same, but can have sensetivity settings

can anyone help me with this? because i wanna do awesome after effects things, but no greenscreen...