PER PIXEL MAPPING FOR IMAGE ENHANCEMENT

摘要

An aspect of the present invention proposes a solution to allow low-cost flat panel displays without light guides to maintain a high quality image display via enhancement of pixel data to account for non uniform brightness. According to one embodiment, each pixel of a display is mapped to the brightness (intensity) of illumination that reaches the pixel. Regional pixel gains are calculated and applied on a per pixel basis to compensate for the non-uniform brightness across the screen. According to such an embodiment, even low cost flat panel displays experiencing non-uniform brightness can be used to render high quality images.

主权项

1. A method for regionally enhancing pixel values in an image in a display device, the method comprising:
receiving, for a display device with a plurality of backlights, image data for a first image comprising pixel data for a plurality of pixels; determining a position in the display device for each pixel of the plurality of pixels; calculating light contributions from the plurality of backlights received in each pixel of the plurality of pixels based on the position of the pixel in the first image; mapping a total illumination received in each pixel based on the calculated light contributions; calculating an enhancement gain value for each pixel based on the total illumination received in the pixel to produce individual gain values; and applying the individual gain values to the pixel data of the plurality of pixels.