Accession Number : AD0762018

Title :   Computer Display of Curved Surfaces,

Corporate Author : UTAH UNIV SALT LAKE CITY COMPUTER SCIENCE DIV

Personal Author(s) : Gouraud,Henri

Report Date : JUN 1971

Pagination or Media Count : 86

Abstract : The report describes a method for producing shaded pictures of curved surfaces. It uses a small polygon approximation of the surface to solve efficiently the hidden parts detection, and then computes the shading on each polygon in such a way that visual discontinuities between adjacent polygons disappear, thus restoring the apparent smoothness of the surface and increasing greatly the realism of the pictures produced. The smooth shading technique described here has been used to produce a large variety of pictures of which several airplanes, a car, a human face and some mathematical surfaces are included to illustrate the effect of the method. (Author)

Descriptors :   (*COMPUTER PROGRAMMING, GRAPHICS), (*SURFACES, *CURVE FITTING), (*PICTURES, PRODUCTION), GEOMETRIC FORMS, INTERPOLATION, CATHODE RAY TUBE SCREENS, APPROXIMATION(MATHEMATICS), PATTERN RECOGNITION, PLOTTERS

Subject Categories : Computer Programming and Software
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE