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Green Image
Issue No. 06 - June (1971 vol. 20)
ISSN: 0018-9340
pp: 623-629
A procedure for computing shaded pictures of curved surfaces is presented. The surface is approximated by small polygons in order to solve easily the hidden-parts problem, but the shading of each polygon is computed so that discontinuities of shade are eliminated across the surface and a smooth appearance is obtained. In order to achieve speed efficiency, the technique developed by Watkins is used which makes possible a hardware implementation of this algorithm.
Coons patches, curved surfaces, halftone, hidden-line removal, shading.

H. Gouraud, "Continuous Shading of Curved Surfaces," in IEEE Transactions on Computers, vol. 20, no. , pp. 623-629, 1971.
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