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Method for confirming zero block pre-determination condition and zero block pre-determination method

A technology for determining methods and judgment conditions, applied in electrical components, television, digital video signal modification, etc., can solve problems such as no practical and effective solutions, and inability to apply well.

Inactive Publication Date: 2006-05-10
HUAWEI TECH CO LTD
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Problems solved by technology

[0033] 1) Since the H.263 standard uses the DCT method, the H.264 standard uses the 4×4 integer transformation method; at the same time, the H.263 standard uses 8×8 blocks as the unit image block for transformation, while the H.264 The standard uses 4×4 blocks as the unit image block for transformation, so the pre-judgment method of zero blocks applicable in the H.263 standard cannot be well applied to the H.264 standard
[0034] 2) The zero-block pre-determination method applicable in the H.263 standard does not propose a practical and effective solution that can avoid the motion search process in the prediction mode selection

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  • Method for confirming zero block pre-determination condition and zero block pre-determination method
  • Method for confirming zero block pre-determination condition and zero block pre-determination method
  • Method for confirming zero block pre-determination condition and zero block pre-determination method

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Embodiment Construction

[0077] First of all, the method for determining the zero-block prediction condition of the present invention proposes a zero-block prediction condition applicable to the H.264 standard 4×4 integer transformation, and the proposed zero-block prediction condition has the following requirements:

[0078] Simple and practical, the judgment accuracy should be high, and the misjudgment rate of zero blocks should be low; and there are two situations for misjudgment: one is that the image block that should be zero block is not judged as zero block (that is, missed judgment), This kind of misjudgment will affect the improvement of coding efficiency; the other is to misjudge the image block that is not zero block as zero block. Judgment conditions can avoid the occurrence of these two misjudgment situations to the greatest extent.

[0079] The specific implementation of the method for determining the zero block prediction condition of the present invention will be described in detail be...

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Abstract

This invention provides one zero block pre-judging condition determining method, which comprises the following steps: taking visual frequency image 4 times 4 block and front frame reference 4 times 4 block; taking the sum of the said reside image block relative isolate errors; according to the sum using integer change theory expression taking the said prediction reside image block integer direct parameter values; taking the said direct parameter value as zero for zero block pre-judging condition. This invention also discloses one zero block judging method and is suitable for H.264 standard compression coding process to improve the compression coding efficiency.

Description

technical field [0001] The invention relates to video compression coding technology in a multimedia communication system, in particular to a zero block pre-determining method in the compression coding process. Background technique [0002] The H.264 compression coding standard is currently the most advanced international standard for video compression coding. Hereinafter, it will be referred to simply as the H.264 standard. The H.264 standard is jointly developed by ITU-T and the Moving Picture Experts Group (MPEG, Moving Picture Experts Group) of the International Organization for Standardization (ISO, International Organization for Standardization) / International Electrotechnical Commission (IEC, International Electrotechnical Commission). The standard has been developed since 1999, with the participation of equipment manufacturers, software developers, telecom operators, universities and scientific research institutions in many countries. The international standard of T....

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/32
CPCH04N19/132H04N19/176
Inventor 罗忠宋彬常义林周宁兆
Owner HUAWEI TECH CO LTD
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