Electronic device and method for enhancing readability of an image thereof

摘要

An electronic device is provided, which includes a light sensor, an algorithm engine, an adjustment engine, and a display. The light sensor detects an ambient brightness around the electronic device. The algorithm engine is coupled to the light sensor. The algorithm engine determines at least one adjustment function according to the ambient brightness. The adjustment engine is coupled to the algorithm engine. The adjustment engine adjusts the luminance component of each pixel of an image according to the at least one adjustment function to enhance the brightness and/or the contrast of the image. The display is coupled to the adjustment engine for displaying the adjusted image.

主权项

1. An electronic device, comprising:
a light sensor, detecting an ambient brightness around the electronic device; an algorithm engine, coupled to the light sensor, determining at least one adjustment function according to the ambient brightness; a histogram engine, coupled to the algorithm engine, generating a histogram of the luminance components of a plurality of pixels of an image, wherein the algorithm engine determines the at least one adjustment function according to the histogram and the ambient brightness, wherein the algorithm engine divides the pixels of the image into a plurality of sets according to the histogram and determines a different adjustment function for each of the sets; an adjustment engine, coupled to the algorithm engine, adjusting a luminance component of each pixel of the image according to the at least one adjustment function to enhance brightness and/or contrast of the image, wherein the adjustment engine adjusts all of the pixels of each of the sets according to the same adjustment function corresponding to the set; and a display, coupled to the adjustment engine, displaying the adjusted image.