METHODS OF CALIBRATING COLOR MEASUREMENT DEVICES
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United States of America Patent
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Issued Date -
Sep 26, 2013
app pub date -
Mar 20, 2012
filing date -
Mar 20, 2012
priority date (Note) -
Abandoned
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Abstract
An embodiment of the invention provides a method of calibrating a color measurement device using a light source having a known color value. The color measurement device includes a light detector. The method includes: aligning the color measurement device and the light source so that the light source images on a center area of the light detector; deriving a detected color value for the light source based on the light detected by the center area when the light source images thereon; deriving a color calibration coefficient based on the detected color value and the known color value of the light source; and deriving a color and flat-field calibration array for the color measurement device by multiplying each entry of a flat-field calibration array of the color measurement device by the color calibration coefficient.
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