2015 Volume 12 Issue 8 Pages 20150239
AMOLED displays have been emerged as a new technology recently but have a significant portion of the total power consumption in mobile devices. In this paper, we propose a novel approach which combines color transformation and dynamic voltage scaling (DVS) synergistically in the aspects of both power saving and visual quality. It adaptively selects an allowable perceptuality and saturation threshold based on the luminance value of an input image, then transforms the colors of image pixels and performs DVS while satisfying human visuality. To implement it, a board interfaced with a mobile AMOLED display module is developed. Experiments show that the proposed approach achieves on average 29.6% power saving for still images with high satisfaction to human visuality.