Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Patent
1997-07-30
2000-05-16
Powell, Mark R.
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
345426, 345473, 345421, 345435, G06T 720
Patent
active
060643935
ABSTRACT:
A layered graphics rendering pipeline measures image fidelity ("fiducials") to determine how accurately a transformed image layer approximates a rendering of a 3D object. The graphics rendering pipeline approximates the change in position or color of 3D object by transforming a rendering of the 3D object from a previous frame. The pipeline uses the fiducials to control rendering of factored scene elements to independent image layers. The pipeline then combines the layers to compute frames of animation. The types of fiducials include sampling, visibility, and photometric fiducials. The sampling fiducial measures the distortion of an image sample when warped to screen coordinates. The visibility fiducial measures the change in visibility of a scene element since a previous rendering of the scene element. The photometric fiducial measures either the change in lighting from the time of the previous rendering to the current time, or it measures the difference between warped color samples and actual color samples of the scene element for a current frame.
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Kajiya James T.
Lengyel Jerome E.
Snyder John
Good-Johnson Motilewa
Microsoft Corporation
Powell Mark R.
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