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Quick encoding and decoding method for performing frame level division according to image content characteristics

A technology for fast coding of image content, applied in the field of fast coding and decoding, can solve the problems of needing improvement and long-term efficiency, and achieve the effect of reducing the overall coding time and improving the efficiency of coding and decoding

Active Publication Date: 2020-09-01
北京博雅睿视科技有限公司
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Problems solved by technology

Therefore, the existing encoding and decoding methods all have the problems of long encoding and decoding time and the efficiency needs to be improved.

Method used

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  • Quick encoding and decoding method for performing frame level division according to image content characteristics
  • Quick encoding and decoding method for performing frame level division according to image content characteristics

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Embodiment Construction

[0028]This embodiment first discloses a fast encoding method for frame-level division according to image content features, such as figure 1 As shown, the content includes:

[0029] Step 1: At the image level, the preset division rules are used to classify the image content features, and the image content is divided into category 1 and category 2;

[0030] Step 2: According to the classification result of the image content, set the serial prediction mode frame-level identification information of the current image, and write the serial prediction mode frame-level identification information into the code stream. The serial prediction mode frame-level identification is represented by "pic_use_sp_flag"; if the image If the image is classified into category 1, set the "pic_use_sp_flag" of the image to "true", and if the image is classified into category 2, set the "pic_use_sp_flag" of the image to "false";

[0031] Step 3: Determine the setting result of the string prediction mode ...

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Abstract

The invention relates to the technical field of data compression, in particular to a quick encoding and decoding method for performing frame level division according to image content characteristics.According to the encoding method, category division is carried out on a frame level layer according to different features of images, the category images meeting conditions can directly skip a string prediction mode to be encoded, and the overall encoding time can be shortened on the premise that the consistency of encoding efficiency is guaranteed. Besides, when the image of the category does notadopt the string prediction mode for coding, the coding end does not need to write the coding unit level identifier of whether the current coding unit adopts the string prediction mode into the code stream, correspondingly, the coding unit level identifier does not need to be analyzed during decoding, the coding time and the decoding time can be shortened, and the coding efficiency and the decoding efficiency are improved.

Description

Technical field: [0001] The invention relates to the technical field of data compression, in particular to a fast encoding and decoding method for frame-level division according to image content features. Background technique: [0002] During the "anti-epidemic" period of the whole society in the world, remote online interactive activities typified by large-scale telecommuting, online teaching, and teleconferencing play an irreplaceable role and have a profound impact on the form of social activities. Screen content coding is the key technology for screen sharing and display in these remote online interactive activities. These screens are ubiquitous and will be one of the main sources of incremental multimedia streaming. Screen content coding technology, as a decisive technology to solve the bottleneck problem of data transmission between "cloud-device / edge" and "device / edge-device / edge" in various applications, as well as the lagging problem of "human-machine" interaction,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/136H04N19/503H04N19/593G06K9/62
CPCH04N19/136H04N19/503H04N19/593G06F18/24
Inventor 赵利平周青阳林涛周开伦胡珂立沈士根屠昂燕唐剑平
Owner 北京博雅睿视科技有限公司
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