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Show ABSTRACT* This .report describes images in of in objects particular. The a new model for the computer-generated shading of general and of polygonally descibed free-form curved surfaces shading function the curvature of the surface. is determined by linear a . Of physical properties It takes into consideration the of the materials of which the surfaces are made. interpolation By applying the fundamental laws. . I of optics, due to the specular reflection of the highlights light are simulated,. . and other existing shading computer-g.enerated images A large number of comparison I the of new problems are Overcome. . This results In of increased realism. sample pictures shading process are' provided with past to methods. give a pictorial Finally, pictures of . simple real gener ated solids, by the such as cylinders, spheres and cones, are compared with those computer. This report reproduces a dissertation of the same title submitted to the of Electrical Engineering, University of Utah, in partial fulfillment Department .' of the reql:'irements for the degree of Doctor Qf Philosophy * . . Tv |