Methods and systems for adjusting color gamut in response to ambient conditions

摘要

Systems and methods for adjusting a color space of a display. In one embodiment, the method for adjusting the color space of the display may include receiving image data to be rendered on the display and receiving an indication of an amount of ambient light impinging on the display. The method may then include rendering the image data in a first color space when the amount of ambient light is less than a threshold. Alternatively, the method may include rendering the image data in an expanded color space when the amount of ambient light is not less than the threshold. As such, the expanded color space may compensate for one or more color shifts in the image data caused by the ambient light.

主权项

1. An electronic device, comprising:
a display configured to display one or more images; a controller configured to adjust a color gamut of the display by:
receiving image data to be rendered on the display, wherein the image data comprises International Commission on Illumination (CIE) Yxy coordinates for each pixel in the image data;receiving an ambient light measurement that indicates an amount of ambient light impinging on the display;rendering the image data in a first color space when the ambient light measurement is less than a threshold; andrendering the image data in an expanded color space when the amount of ambient light is not less than the threshold by:
determining a shift in the Yxy coordinates for each pixel due to the amount of ambient light, wherein the shift in the Yxy variables for each pixel is determined according to:(xref-xsource)⁢YrefYsource(yref-ysource)⁢YrefYsource wherein xref corresponds to a reflected x variable of one or more reflected Yxy variables for each pixel due to the amount of ambient light, xsource corresponds to an x variable of the Yxy coordinates, yref corresponds to a reflected y variable of the reflected Yxy variables, ysource corresponds to a y variable of the Yxy coordinates, Yref corresponds to a reflected Y variable of the reflected Yxy variables, and Ysource corresponds to a Y variable of the Yxy coordinates;determining Yxy compensation variables for each pixel based at least in part on the shift in the Yxy coordinates for each pixel due to the respective reflected Yxy variables for each pixel; andapplying the Yxy compensation variables to each pixel.