Apparatus and method for performing lighting calculations for su

Details Apparatus and method for performing lighting calculations for su Apparatus and method for performing lighting calculations for su

1993-09-30

1996-10-08

Herndon, Heather R.

G06T 1550

Patent

active

055639895

ABSTRACT:
Image data representing multi-dimensional objects are processed by calculating lighting characteristics in response to lighting parameters of surfaces and the parameters of light sources.
Surface highlight characteristics are produced by a non-linear process. However, the non-linear process is performed without reference to a view position.
Processing highlight characteristics without reference to the view position allows characteristics to be produced without transforming the view position and without calculating additional vectors.

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Eurographics 12, Sep. 1988, Amsterdam, pp. 499-510, Shao E. A. "Form Factors For General Enviornments".
COMCON Spring 82, 22 Feb. 1982, New-York U.S., pp. 245-250, Whitted, T., "Processing Requirements For Hidden Surface Elimination and Realistic Shading".

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