Patent ID: 6885370
Filing Date: 2005-04-26
Classification: G06T

Abstract:
1. A computer graphics system for generating a pixel value for a pixel in an image, the pixel being representative of a point {right arrow over (x)} in a scene, the computer graphics system generating the pixel value to simulate global illumination for a plurality of colors, global illumination being represented by an evaluation of a function ƒ(x), the function ƒ(x) having the form where ƒ(x) (and similarly ƒ(y)) is an unknown function, and g(x) and K(x,y) are known functions, with K(x,y) serving as a “kernel” of the integral, the kernel K(x,y) including a function associated with at least two colors, the computer graphics system comprising: A. an estimator generator module configured to generate a selected number “N” of estimators ƒ  where S  and where Θ(x) represents the Heaviside function, and ξ B. a luminance value module configured to generate a luminance value for the point in the scene as the average of said estimator values generated by said estimator generator module; and C. a pixel value generator module configured to use the luminance value generated for the point in the scene in generating the pixel value.