Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Patent
1998-02-20
2000-06-20
Powell, Mark R.
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
345505, 345506, 345425, 345426, 345430, G06T 500
Patent
active
060783338
ABSTRACT:
In an image-processing method and apparatus for displaying computer-modeled objects that are present in the form of a grid model and are simulated by a plurality of adjacent polygon surfaces, the individual polygon surfaces are divided into pixels and the image impression of each pixel is calculated, on the one hand, corresponding to Phong's illumination model and, on the other hand, by suitable addressing of storage matrices (8, 9) that represent the image impression of the environment, so both a natural-looking shading and the consideration of reflections of the environment in the objects are possible; the environment reflections can be modulated from perfect mirroring of the environment to a complete lack of mirroring.
REFERENCES:
patent: 5563989 (1996-10-01), Billyard
patent: 5923334 (1999-07-01), Luken
B.T. Phong: "Illumination for Computer Generated Pictures". In: Communications of the ACM, Jun. 1975, vol. 18, No. 6, pp. 311-317.
D. Jackel: "A Real Time Rendering System with Normal Vector Shading". In: Ninth Eurographics Workshop on Graphics Hardware, Sep. 1994, Oslo, pp. 48-57.
D. Voorhies et al: "Reflection Vector Shading Hardware" In: Computer Graphics Proceedings, Annual Conference Series, 1994, pp. 163-166.
Budianto Suwanto
Wittig Oliver
GMD - Forschungszentrum Informationstechnik GmbH
Good-Johnson Motilewa
Kinberg Robert
Powell Mark R.
Spencer George H.
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