Method and apparatus for determining the color of a translucent object such as a tooth
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United States of America Patent
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Jan 17, 1995
Grant Date -
N/A
app pub date -
Dec 15, 1992
filing date -
Dec 23, 1991
priority date (Note) -
Expired
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Abstract
The invention relates to a method and to apparatus for determining the color of a translucent object such as a tooth by measuring the reflectance of said object at wavelengths corresponding essentially to sensitivity maxima of the human eye to hue and to saturation, by calculating the luminance of white included in the luminance of the object illuminated by a determined standard illuminant, by calculating a saturation percentage for the color of the object as seen by the human eye, and by determining the pigmentations of said color relative to white.
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