Patent ID: 6853377

Claim:
A method of computing diffusely reflected light at one or more positions on surfaces in an object scene from object scene data, the method comprising selecting a non-regular order for processing a plurality of positions on a surface, said plurality of positions having been predetermined; processing the plurality of positions in the non-regular order, said processing including computing diffusely reflected light at a position in the plurality of positions by reference to diffusely reflected light incident on said position when deriving said diffusely reflected light at the position by reference to diffusely reflected light at other positions computed by reference to diffusely reflected light incident on said other positions is inaccurate; and deriving the diffusely reflected light at the position by reference to the diffusely reflected light at the other positions computed by reference to diffusely reflected light incident on said other positions when said deriving the diffusely reflected light at the position by reference to the diffusely reflected light at the other positions is accurate.