IMAGE QUALITY ENHANCEMENT FOR LOW BACKLIGHT TFT-LCD DISPLAYS

摘要

Reducing LCD backlight saves power consumption of a portable device, but it also decreases the contrast and brightness of the displayed image. Previous approaches adjust the backlight level frame by frame to reach a specified image quality level without optimizing the image quality. In contrast, the proposed method adjusts the backlight to meet the target power level while maintaining the image quality. This is achieved by performing brightness compensation and local contrast enhancement in accordance with the given backlight level. Experimental results show that the proposed algorithm outperforms previous methods.