| Description |
This .report describes a new model for the shading of computer-generated images of objects in general and of polygonally descibed free-form curved surfaces in particular. The shading function is determined by a linear interpolation Of the curvature of the surface. It takes into consideration the physical properties of the materials of which the surfaces are made. By applying the fundamental laws. I . . of optics, highlights due to the specular reflection of the light are simulated,. and other . existing shading problems are Overcome. . This results In computer-generated images of increased realism. A large number of sample pictures are' provided to give a pictorial comparison of the new shading process with past methods. Finally, pictures of I . simple real solids, such as cylinders, spheres and cones, are compared with those generated by the computer. |
