Systems and methods for selecting a white point for image displays
View Patent ↗Several embodiments of the present application disclose techniques, systems and methods for changing or rendering input image data that may assume a first white point for a given display into image data to be rendered under a second—assumed, desired or measured—white point of the display.
1. For a display device, a method for changing the chromaticity triangle calculations of input image data, the method comprising:
converting input image data to a first color space, said first color space having the same white point as a white point of the display device; and
calculating the chromaticity triangle of the converted input image data,
wherein the input image data are converted into values that have the same white point as the display device, and the converted values have their chromaticity triangles calculated.
2. The method of claim 1 wherein said input image data is in sRGB format.
3. For a display device, a method of calculating chromaticity triangles of input image data, the method comprising:
constructing a plurality of Boolean tests to determine the chromaticity triangle of any input image data; and
applying a correction for said Boolean tests depending upon a white point of the display device.