Apparatus and method for simulating specular reflection in a com

Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements

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345431, 345432, G06T 1550

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058546324

ABSTRACT:
The final viewable color of each pixel to be displayed responsive to specular reflected illumination intensity from a polygon is determined by generating a data signal, setting a specular component of the present pixel illumination intensity for the associated color, as the product of the intensity of a light source illuminating the polygon, a specular coefficient for that polygon, and a shading term proportional to the exponentiation of the rendered Gouraud Shading Intensity (GSI) for each of a plurality of selected primary colors of a sequence of pixels to be displayed as defining that polygon, by S, a shininess exponent (S) specified for that polygon.

REFERENCES:
patent: 5163126 (1992-11-01), Einkauf et al.
patent: 5222203 (1993-06-01), Obata
patent: 5253339 (1993-10-01), Wells et al.
patent: 5566283 (1996-10-01), Modegi et al.
patent: 5572635 (1996-11-01), Takizawa et al.
patent: 5659671 (1997-08-01), Tannenbaum et al.
patent: 5673374 (1997-09-01), Sakibara et al.
patent: 5704024 (1997-12-01), Voorhies et al.
patent: 5706415 (1998-01-01), Kelley et al.
patent: 5710876 (1998-01-01), Peercy et al.
Forsyth, David, "Reflections on Shading", IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 13 No. 7, Jul. 1991, pp. 679-671.
Cho, Youngkwan, et al, "Improved Specular Highlights with Adaptive Shading", Computer Graphics International, IEEE Publication, 1996, pp. 38-46.
Zheng, Qinfen, et al, "Estimation of Illuminant Direction, Albedo, and Shape From Shading", IEEE Transactions on Pattern Analysis & Machine, vol. 13, No. 7, Jul. 7, 1991, pp. 680-702.
Murkawa, Naoki, "Estimation of shape, Reflection coefficients and Illuminant Direction from Image Sequence", Computer Vision, 3rd Internationalo Conference, pp. 507-512, 1990.
Horn, Berthold K. P., "Impossibe Shaded Images", IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 15, No. 2, Feb. 1993, pp. 166-170.
Langer, M.S., "Diffuse Shading, Visibility Fields, and the Geometry of Ambient Light", Computer Vision, 1993, 4th International Conference, Apr. 1993, pp. 138-147.
Foley, James D., et al, "Computer Graphics: Principles and Practices", Addison-Wesley Publishing Co., 2nd ed. pp. 611-614, 721-814, 1990.
Peercy, Mark, "Linear Color Representations for Full Spectral Rendering"ACM Siggraph, Computer Graphics Annual Conference, 1993, pp. 191-198.
Elbert, Gershon, "Low Cost Illumination Computation using Approximation of Light Wavefronts", ACM Siggraph, Computer Graphics Annual Conference, 1994, pp. 335-342.
Guenter, Brian, et al, "Specilized Shaders", ACM Siggraph, Computer Graphics Annual Conference, 1995, pp. 343-350.

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