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Method for judging macro block type in video coding technology

A video coding and macroblock technology, applied in the field of video coding, can solve the problem of "smearing" easily

Active Publication Date: 2012-07-18
ANHUI CREARO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once it is judged as an interframe coding type, it is easy to produce a "smearing" effect

Method used

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  • Method for judging macro block type in video coding technology
  • Method for judging macro block type in video coding technology
  • Method for judging macro block type in video coding technology

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0022] A method for judging a macroblock type in a video coding technology, comprising the following steps:

[0023] (1) Video compression is performed according to the MPEG4 standard. When encoding the inter-frame prediction frame macroblock by macroblock, follow the usual method of the general compression standard MPEG4 (for specific methods, please refer to ISO / IEC JTC1 / SC29 / WG11 N3908 MPEG-4 Section 18.11.1 INTRA / INTER mode decision in Video Verification Model version 18.0) determines whether the macroblock type is an intra-frame prediction macroblock or an inter-frame prediction macroblock. The method can be encoded;

[0024] (2) If the macroblock type is judged to be an inter-frame prediction macroblock in the usual way of the general compression standard MPEG4, use the form such as and The Sobel operator performs the convolution operation on the macroblock respectively. The result of the two convolution operations is a two-dimensional array. The absolute values ​​of...

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Abstract

The invention discloses a method for judging the macro block type in the video coding technology. Specifically, the method comprises the following steps of: a, when coding a special macro block of an inter prediction frame, if the prediction is judged to be the intra prediction, processing in an ordinary pattern; b, if the prediction is judged to be the inter prediction, further performing secondary type judging according to the result of operations, such as convolution and summation on the macro block and a special type operator; c, based on the result of the secondary type judging, performing subsequent coding on the macro block according to the ordinary pattern. The method can effectively suppress a 'smearing effect' without increasing the code rate in the applications like the road monitoring.

Description

[0001] technical field [0002] The invention relates to the field of video coding, in particular to a method for judging macroblock types in video coding technology. Background technique [0003] Video coding technology has developed rapidly in the past two decades, and a large number of international standards for video coding have come out successively, such as: H.261, H.263, MPEG1, MPEG2 and so on. Especially in recent years, the rapid promotion of MPEG4 and H.264 coding standards has greatly promoted the application and popularization of network video products. [0004] In network-based video surveillance applications, video coding technology also has a wide range of applications. Since encoding technologies such as MPEG4 and H.264 are all oriented to general video compression requirements, in certain applications of video surveillance, the optimal compression effect cannot be achieved in some scenarios. For example, in road monitoring applications, it is a fixed road...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/50H04N19/159
Inventor 何佳王小敏王大勇尼秀明
Owner ANHUI CREARO TECH