Subtractive color based display white point calibration

摘要

Systems, methods, and devices for white point calibration using subtractive color measurements are provided. Specifically, a white point of a display may be calibrated using subtractive color measurements rather than merely additive color measurements. In one example, a display having red, green, and blue pixels may measure the responses in a subtractive color space (e.g., CMY) rather than additive color space (e.g., RGB). Measurements of the display response using subtractive color space may involve providing image data to two or more color channels at once. Thus, any crosstalk effect between channels may be accounted for, even though the same crosstalk effect might not be apparent using additive color measurements in which only a single channel color channel were measured.

主权项

1. A method for calibrating an electronic display comprising:
measuring a first optical response of an electronic display, wherein the first response occurs when the electronic display is programmed to display a first mixed color due to image data supplied to a first color subpixel and a second color subpixel but not a third color subpixel; measuring a second optical response of the electronic display, wherein the second response occurs when the electronic display is programmed to display a second mixed color due to image data supplied to the first color subpixel and the third color subpixel but not the second color subpixel; measuring a third optical response of the electronic display, wherein the third response occurs when the electronic display is programmed to display a third mixed color due to image data supplied to the second color subpixel and the third color subpixel but not a first color subpixel; and calibrating a white point of the electronic display based at least in part on the first, second, and third optical responses.