Method and device for reducing display energy by using temporally alternating complementary colors

Abstract

A method and device allow to reduce the energy consumption needed for rendering an image by replacing a pixel of the image by temporally successive pixels of alternating complementary colors requiring less energy for display. This solution is exploiting the flicker fusion characteristic of the human vision system which allows displaying temporally successive alternating complementary colors that visually have the same perceptual characteristics than a corresponding single color. The alternating complementary colors are selected to be more frugal than a single color in terms of energy consumption required for rendering the color. This combination doubles the search space dimension for energy reduction from three to six. The temporal modulation used for replacing a pixel by temporally successive pixels of alternating complementary colors is performed either by frame doubling, by frame skipping or by frame averaging. The association between a color and the corresponding alternating complementary colors can be stored in a look-up table. These principles may be used on an image or a video comprising a succession of images.

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