Patent ID: 7006090
Filing Date: 2006-02-28
Classification: G06T

Abstract:
1. A method for lighting a computer graphics image, the computer graphics image including an object surface and at least two light sources illuminating said computer graphics image, comprising the steps of: computing a lighting condition of illuminating said computer graphics image; computing coefficients for multiple areas of said object surface; storing said coefficients for areas of said object surface; and rendering said computer graphics image by retrieving said stored coefficients; wherein said step of computing said lighting condition comprises a step of pre-calculating a substantially static lighting condition, comprising the steps of: a) calculating an approximated light direction for at least two selected ones of said light sources illuminating said computer graphics images, comprising the steps of: b) calculating an approximated light color for said selected light sources by weighting color contributions of said selected light sources; in which method said coefficients to be stored per object surface area are computed based on said step of pre-calculating.