Patent ID: 8035688

Claim:
A method for calibrating and characterizing a color display, the method comprising: operating a light source including a plurality of light emitters to emit light, including: selecting light emitters in the light source determined as producing a largest signal for each of the RG and B channels of a color capture device; and generating a plurality of intensity steps by operating each selected light emitter at a plurality of intensities ranging from zero power to full power; and calibrating and characterizing the color capture device based on the emitted light, including: capturing each of the plurality of intensity steps by the color capture device; computing transforms relating intensity-proportional RGB channel values to camera RGB channel counts based on known luminances for the selected light emitters; collecting a plurality of images from the color capture device, each collected image corresponding to one of the selected light emitters in the light source being operated; computing image statistics for each collected image; converting capture device RGB values for each collected image to linearized R′G′B′ values based on the computed transforms; and computing color capture device spectral responsivities from known spectral power distributions of the light emitters and the linearized R′G′B′ values; displaying color images on the color display; capturing the displayed color images on the color capture device; and calibrating and characterizing the color display based on the captured color images.