Method and device for processing image

Abstract

The invention provides a method and device for processing an image, which are used for deciding an environment brightness value. The ambient brightness value is analyzed from three different environments: static, dynamic and backlight. The method mainly comprises the following steps of: receiving an image from an image stream, averaging the brightness values of a part of pixels in the image according to different selection conditions so as to produce a plurality of different brightness average values, and deciding the environment brightness value from the brightness average values. The invention can be used for analyzing an environment light source through image processing so as to realize the same sensing effect as an environment light source sensor.

Description

technical field [0001] The present invention relates to image processing technology, in particular to an image processing method and device for obtaining ambient brightness values ​​by analyzing brightness information corresponding to pixels in an image, wherein the ambient brightness values ​​can be further used to control the settings of other hardware devices. settings (such as output brightness). Background technique [0002] Today, the design of electronic products is often closer to the needs of users and the use environment. For example, in order to achieve better use effects in different light environments, electronic products provide control devices that can adjust the output components of the light source. For example, the liquid crystal display will adjust the output brightness of the backlight module according to the intensity of the ambient light source. Therefore, some current liquid crystal displays will be equipped with an ambient light sensor (Ambient Light ...

AI Technical Summary

Problems solved by technology

However, power consumption is usually an aspect that needs to be considered in the design of notebook computers. Therefore, when providing a backlit keyboard, manufacturers usually add a control device that detects ambient light to switch the keyboard backlight, so that the keyboard backlight can only be turned on and off. It will only be turned on in a dark environment. Such a design often requires an additional ambient light sensor

Although the above design provides greater convenience for users, it also indirectly increases the overall hardware cost

Images