A process for generating a computer image of a three-dimensional object proved with a special-effect coating

摘要

A process for generating a computer image of a three-dimensional object provided with a special-effect coating, involves coating a test panel with the coating, taking a plurality of angle-dependent colorimetric measurements of the coating; storing the colorimetric data in a datafile with assignment of the corresponding angles; facetting the visible surfaces of a three-dimensional object by computer into a sufficient number of flat polygonal areas each being sufficiently small for the sufficiently accurate description of the surface topography; assigning the colorimetric data to each individual polygonal area by computer as a function of the position of an observer and at least one illumination source; and assembling the polygonal areas into a computer image of a three-dimensional object with a visually perceptible special-effect coating thereon.