US 6,982,744 B2
Multi-point calibration method for imaging light and color measurement device
David R. Jenkins, Chapel Hill, N.C. (US)
Assigned to Radiant Imaging, Inc., Duvall, Wash. (US)
Filed on Apr. 15, 2002, as Appl. No. 10/122,586.
Prior Publication US 2003/0193564 A1, Oct. 16, 2003
Int. Cl. H04N 17/00 (2006.01)
U.S. Cl. 348—189 10 Claims
OG exemplary drawing
 
1. A multi-point calibration method for an imaging light and color measurement system, comprising:
aligning a spot measurement instrument with one of a plurality of light emitting areas of a light emitting surface at a specific angle to the light emitting surface and measuring the luminance or color value thereof;
moving the spot measurement instrument to align with align with another light emitting area of the light emitting surface and the luminance or color values thereof until all the light emitting areas of interest on the light emitting surface are measured;
measuring the luminance or color values of the light emitting surface using the imaging light and color measurement system; and
correcting the luminance or color values measured using the imaging light and color measurement system by the luminance or color values measured from the light emitting areas.