Patent ID: 8847972

Claim:
A method comprising: determining, by a processor, an initial ambient light value and a subsequent ambient light value based at least in part on detected ambient light conditions; determining, by the processor, an initial displayed image brightness value and a subsequent displayed image brightness value based at least in part on detected displayed image brightness; determining, by the processor, initial luminance conditions in an adaptive field based at least in part on the initial ambient light value and the initial displayed image brightness value; determining, by the processor, subsequent luminance conditions in the adaptive field based at least in part on the subsequent ambient light value and the subsequent displayed image brightness value; tracking, by the processor, a luminance condition history of the adaptive field; determining, by the processor, that the luminance conditions have changed to or from low luminance conditions corresponding to human mesopic vision based at least in part on a comparison of the initial luminance conditions and the subsequent luminance conditions; determining, by the processor, changes in color appearance parameter values to be applied to displayed images based at least in part on the initial luminance conditions, the subsequent luminance conditions, current color appearance parameter values, the luminance condition history, and a color appearance model of human vision that encompasses at least photopic and mesopic viewing conditions, wherein the color appearance parameter values relate to a plurality of attributes of color perception by a human; and applying, by the processor, the changes in the color appearance parameter values to image data by altering the image data for the displayed images.