Patent ID: 7002589

Claim:
A graphics system for flattening a distribution of light energy perceived by a viewer of two or more images generated on a display surface by two or more corresponding projection devices, the graphics system comprising: a first sample-to-pixel calculation unit configured to compute first pixel values by selecting and filtering samples, to scale color intensity values of each pixel of a first subset of the first pixel values by specified corresponding first intensity scaling values, and to provide the first pixel values, including the first subset, to a first projection device; and a second sample-to-pixel calculation unit configured to compute second pixel values by selecting and filtering the samples, to scale color intensity values of each pixel of a second subset of the second pixel values by specified corresponding second intensity scaling values, and to provide the second pixel values, including the second subset, to a second projection device; wherein the color intensity values of the first and second subsets of pixel values are scaled to flatten a distribution of light energy perceived by a viewer of combined images generated on a display surface by the first and second projection devices.