Quadratic interpolation for shaded image generation

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G06F 1520

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active

051094819

ABSTRACT:
A system for quadratic and higher order interpolation of pixel color and other pixel values into a bitmap image enables enhanced shading for generation of realistic computer graphics images. The system incorporates modules for executing incremental evaluation of pixel values, utilizing forward differencing in N arbitrary directions of incremental evaluation. The system alternatively incorporates non-incremental evaluation elements for directly evaluating polynomials or executing a spline function of control points.

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Bishop, G. and Weimer, D. M., 1986, "Fast Phone Shading," ACM Computer Graphics, vol. 20, No. 4, pp. 103-106.

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