Process for generating a computer image of a three-dimensional object provided with a special-effect coating
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United States of America Patent
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Sep 9, 2003
Grant Date -
N/A
app pub date -
Nov 27, 2000
filing date -
Nov 27, 2000
priority date (Note) -
Expired
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Abstract
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 calorimetric 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.
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