1. A method for reducing power consumption of a display, the method comprising: dimming a backlight of the display by a first scale factor, wherein the first scale factor is a constant value for a frame of pixels to be displayed on the display; calculating an average value for the frame of pixels to be displayed on the display by calculating a linear amplitude for each pixel in the frame of pixels to generate calculated linear amplitudes, accumulating the calculated linear amplitudes to generate accumulated linear amplitudes, and normalizing the accumulated linear amplitudes to generate the average value for the frame of pixels; calculating a second scale factor based on the calculated average value and the first scale factor; and for each pixel in the frame, increasing a value of the pixel by the second scale factor.