Coding method and coding system for screen display information

Abstract

The invention discloses a method and system for coding screen display information. The method comprises the steps that current original screen display information to be coded is determined, pixel points are continuously collected according to a preset time interval, and an original pixel value of each pixel point is obtained; each pixel point is filtered through filters with different center frequencies, corresponding filtering values are obtained respectively, and a compensation value of a filtering value of each pixel point and the original pixel value is calculated in an accumulated mode; according to a collection sequence of each pixel point, the filtering values, obtained through the filters with the same center frequency, of the pixel points are grouped on the same layer and belong to a first-type layer, and the compensation values of the pixel points are grouped on a second-type layer; each value in the first-type layer and each value in the second-type layer are respectively coded, so that a coding result is obtained. The information displayed on a computer screen can be effectively coded, so that the information is still clear and smooth after being decoded.

Description

technical field [0001] The invention relates to the field of computers, in particular to a coding method and coding system for information displayed on a screen. Background technique [0002] In many industries, it is usually necessary to save or transmit the information displayed on the current computer screen to another device. However, the information displayed on the computer screen is often complex, with high resolution and large amount of information. Therefore, how to display on the screen Information encoding has become a major topic of research in the industry. [0003] In the prior art, when encoding the information displayed on the computer screen, the following methods are usually adopted: [0004] (1) MPEG4 / H264 / H265; when encoding video, the encoding rate is high, when encoding computer graphics, such as text, application windows, reports, etc., the encoding rate is low, and the decoded graphics are not clear; [0005] (2) Transmission of changing parts; when...

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Problems solved by technology

[0006] (3) A variety of coding methods are mixed, that is, the screen is divided into several blocks (blocks), and the several blocks are classified according to the pixel change frequency and content, and the corresponding coding methods are used to encode several blocks separately; however, some The boundary between computer graphics and video cannot completely belong to different blocks, which will make the boundary of the display area of ​​the corresponding block visually unclear after decoding

[0007] According to the above analysis, the encoding method in the prior art is only applicable to the relatively single information displayed on the computer screen. When the content displayed on the computer screen is a transparent area, it is difficult for the above encoding algorithm to achieve good results. Based on this , the existing technology really needs to be improved

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