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Judging method and device for intra-frame prediction mode

A technology of intra-frame prediction mode and prediction mode, applied in digital video signal modification, electrical components, image communication, etc., can solve the problems of low video transmission efficiency and low compressed video efficiency

Active Publication Date: 2017-08-22
WUHAN DOUYU NETWORK TECH CO LTD
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Problems solved by technology

[0005] The present invention provides a method and device for judging the intra-frame prediction mode to solve the current technical problem that the efficiency of compressed video is not high and the efficiency of video transmission is not high

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  • Judging method and device for intra-frame prediction mode
  • Judging method and device for intra-frame prediction mode
  • Judging method and device for intra-frame prediction mode

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Embodiment Construction

[0062] In order to enable those skilled in the technical field to which the application belongs to understand the application more clearly, the technical solutions of the application will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0063] As we all know, video is composed of images in units of frames, and images are composed of pixels. Therefore, when compressing video, each frame of image is actually compressed. The main purpose of the present invention is to provide a method for judging the intra-frame prediction mode to find out the best prediction mode of the image, and the best prediction mode can obtain the best SAD value of each frame of image. SAD (Sum of Absolute Difference) can also be called SAE (Sum of Absolute Error), that is, the sum of absolute errors. Its calculation method is to find the difference between the corresponding pixel points of two pixel blocks, calculate the absolute value of these dif...

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Abstract

The invention provides a judging method and device for an intra-frame prediction mode. A video frame is divided into first pixel subblocks and then eacn first pixel subblock is divided into second pixel subblocks; the optimum SAD (Sum of Absolute Difference) and the optimum prediction mode of the former three second pixel subblocks are determined; the optimum SAD of a fourth second pixel subblock is determined in the optimum prediction mode; an SAD comparison value of the first pixel subblock is determined through utilization of the optimum SAD value of the four second pixel subblocks; the SAD comparison value of the first pixel subblock is compared with an SAD value set of the first pixel subblock, the final optimum prediction mode is obtained, and a video is compacted in the final optimum prediction mode. According to the method and the device, the optimum prediction method corresponding to the optimum SAD of the former three second pixel subblocks is taken as a standard, thereby obtaining the optimum SAD value of the fourth pixel subblock, so the computation quantity when the video frame prediction is carried out is reduced, the compaction efficiency is improved, and the transmission efficiency is improved.

Description

technical field [0001] The present application relates to the field of video compression, in particular to a method and device for judging an intra-frame prediction mode. Background technique [0002] At present, due to the continuous development of Internet technology, there are more and more types of electronic products, and people enjoy various conveniences brought about by the development of science and technology. Now people can enjoy the comfortable life brought by the development of science and technology through various types of electronic devices. [0003] For example, users can use electronic devices to watch various videos. [0004] In order to facilitate video transmission, before transmission, the video is usually compressed at the encoding end (such as a website server), and then the compressed video is transmitted to the decoding end (such as each terminal). However, after the current video compression technology compresses the video, The compression efficie...

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Application Information

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IPC IPC(8): H04N19/11H04N19/176
CPCH04N19/11H04N19/176
Inventor 徐超
Owner WUHAN DOUYU NETWORK TECH CO LTD
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