A method for saving energy and reducing consumption of display screen based on multi-band brightness compensation

Abstract

The invention discloses a method for saving energy and reducing consumption of a display screen based on multi-band brightness compensation, which includes decomposing an image into n images according to frequency; compressing the brightness dynamic range of each frequency band by using a combination function and a low-pass filter; determining the image The luminance compression values ​​of n non-overlapping frequency bands; different luminance gain compensation methods are used for different frequency bands to perform luminance gain compensation to obtain the final luminance dynamic sub-range; the decomposed images are synthesized to obtain the final image. The method of the present invention proposes an image decomposition and multi-band decomposition scheme, and sets different brightness compensation gain schemes for different frequency bands; compared with the traditional method, the method of the present invention not only ensures the image quality, but also solves the problem of the current display screen to a large extent. The problem of excessive energy consumption.

Description

technical field [0001] The invention relates to a method for saving energy and reducing consumption of a display screen based on multi-band brightness compensation, which belongs to the technical field of display energy saving and also belongs to the technical field of image processing. Background technique [0002] At present, the environmental protection problem has become the top priority to be solved in the world. More and more people are paying attention to green consumption, and the concept of energy saving and emission reduction is becoming more and more popular. With the widespread use of electronic products and digital media devices such as LED liquid crystal displays, outdoor large display screens, TVs, and smart phones, the energy consumption in the display field is huge. Taking an LED backlight liquid crystal display as an example, as the size of the display increases, the power consumption of this display device increases sharply. Especially for outdoor LED adv...

AI Technical Summary

Problems solved by technology

However, on the one hand, the logarithmic function used for compression causes the dynamic range of brightness to change nonlinearly, causing distortion in some areas of the image; on the other hand, the algorithm uses a fixed gain function for any frequency band, and does not consider high frequency, The mid-frequency and low-frequency parts contain different information of the image, and different gain functions should be used to compensate

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