Video inter-frame compression coding method based on macroblock features and statistical properties

A technology of compression coding and statistical characteristics, which is applied in the fields of digital video signal modification, television, electrical components, etc., can solve the problems of slow coding speed and increased calculation amount, maintain the code stream structure, improve the inter-frame coding speed, and improve the video quality. Not reducing the effect

Inactive Publication Date: 2010-02-03
BEIJING UNIV OF TECH
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Problems solved by technology

Although this method can select the inter-frame prediction mode with optimal rate-distortion significance, the amount of calculation increases significantly, occupying most of the amount of calculatio

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  • Video inter-frame compression coding method based on macroblock features and statistical properties
  • Video inter-frame compression coding method based on macroblock features and statistical properties
  • Video inter-frame compression coding method based on macroblock features and statistical properties

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[0071] Since this method is completed for the brightness component in the video sequence, in actual use, first read in a video sequence in YUV format, extract its brightness component, and the encoder calls the inter-frame compression coding module mentioned in the present invention to complete Specific video compression coding.

[0072] In the specific implementation, the following procedures are completed in the computer:

[0073] Step 1: Read in the video sequence in YUV format according to the encoder configuration file encoder.cfg, and configure the encoder according to the parameters in the configuration file. For example, the number of frames that need to be encoded is FramesToBeEncoded; frame rate FrameRate; originally the length and width dimensions of the video file SourceWidth, SourceHeight; output file name OutputFile; quantization step QP value QPISlice, QPPSlice; motion estimation search range SearchRange; motion estimation search mode type SearchMode; the number of ...

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Abstract

The invention discloses a video inter-frame compression coding method based on macroblock features and statistical properties and relates to the field of video compression coding. The method comprisesthe following steps: firstly extracting brightness information of the current coding macroblock from original video data, adopting the dual-layer prejudgment criteria for determining the optimal inter-frame coding mode according to the statistical properties of the optimal inter-frame mode selected by the current coding macroblock, further utilizing the time-space relevant features of the currentcoding macroblock for selectively carrying out intra-frame coding, comparing the optimal inter-frame coding mode with the optimal intra-frame coding mode according to a rate distortion cost function,determining the final inter-frame coding mode and coding the current macroblock. Compared with the ergodic full-search inter-frame predictive coding method adopted in video coding standard H.264, themethod has almost no loss of video quality, strictly controls the increase of code rate, keeps the excellent performance of high compression ratio of the original standard algorithm and can greatly improve the inter-frame coding speed.

Description

technical field [0001] The invention relates to the field of video compression encoding, and designs and implements a video compression method based on macroblock features and statistical properties. Background technique [0002] Information is the most essential description and analysis of objective laws in the objective world, and it is the pillar of the current information society. With the popularity of various video applications, people have increasingly extensive requirements for video services. The rapid development of these video applications has undoubtedly promoted the formulation of digital video coding standards. In fact, since the 1980s, the two major organizations, IS0 / IEC and ITU-T, have continuously launched a series of digital video coding standards for different application fields, such as H.261, H.263, MPEG- 1 / 2 / 4 etc. Although the specific technical details adopted by these video coding standards are different, they all follow the coding framework of m...

Claims

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Application Information

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IPC IPC(8): H04N7/32H04N19/109H04N19/166H04N19/176H04N19/61
Inventor 刘鹏宇贾克斌
Owner BEIJING UNIV OF TECH
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