A method for local dimming boost using salient features

摘要

The local backlight intensity in the LED backlight displays is commonly estimated based on the intensity levels of the image. Present invention offers a post processing method in which estimation is improved using salient features of the image. The method mainly boosts up backlight in low intensity regions where a salient area occurs. This post processing improves image quality and perception by means of preventing local contrast loss due to high level of compensation where salient regions are present. As a result, high contrast and power efficiency can be achieved with an improved human perception of the image.