A method for adaptively adjusting the peak luminance of an image according to the average luminance of a picture

Abstract

This invention discloses a method for adaptively adjusting the peak brightness of an image based on the average brightness of the screen, relating to the field of liquid crystal display image quality optimization technology. The invention converts the input RGB image data into the XYZ color space, extracts the brightness Y value and performs a threshold conversion, obtains the maximum enhancement coefficient by statistically analyzing the average brightness of the entire frame and looking up a table, and then calculates the pixel-level adjustment coefficient by interpolating the Y values ​​of each pixel, thus completing the adaptive adjustment of image data pixel by pixel. This invention effectively solves the problems of low precision and poor scene adaptability in traditional HDR adjustment, accurately optimizing image contrast and detail performance, while avoiding circuit overload and excessive power consumption caused by full-area high brightness, balancing image quality and hardware load, and improving the image quality performance and operational stability of liquid crystal display products.

Images