Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Patent
1997-11-26
2000-10-10
Powell, Mark P.
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
345426, G06T 1700
Patent
active
061306711
ABSTRACT:
Volume rendering lighting using dot product methodology is disclosed. In one embodiment of the invention, a computer includes a processor, a computer-readable medium and a computer program. The medium stores first data representing a set of voxel data representing an object, each voxel datum having a gradient that is desirably either positive or negative, and second data representing a light source having a directional vector. The computer program is executed by the processor from the medium, and displays the set of the voxel data, including illuminating each voxel datum using a dot product of the gradient of the voxel datum with the directional vector of the light source.
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Neider, J., et al., "OpenGL Programming Guide: The Official Guide to Learning OpenGL", Silicon Graphics Inc., Release 1/ OpenGL Architecture Review Board, ISBN 0201632748, Including p. 191, (1993).
Good-Johnson Motilewa
Powell Mark P.
Vital Images, Inc.
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