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A simplified loop filtering method for video coding

A technology of video coding and loop filtering, which is applied in the field of video coding systems, can solve problems such as high hardware implementation costs and complex filters, achieve remarkable experimental results and improve coding efficiency

Inactive Publication Date: 2004-12-29
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The biggest disadvantage of this technology is that the filter is more complicated and the cost of hardware implementation is higher.

Method used

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  • A simplified loop filtering method for video coding
  • A simplified loop filtering method for video coding
  • A simplified loop filtering method for video coding

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Embodiment Construction

[0034] according to Figure 1-Figure 5 An embodiment of the present invention is configured for illustration. In this example, the computer is a Pentium 3 or above CPU, a hard disk above 10G, and an ordinary desktop microcomputer with general image processing capabilities. Using the existing coding standard version 6.0 provided by JVT, the transformation and quantization described in the flow chart are as follows:

[0035] The format of the video stream is generally YUV format (that is, brightness, chroma and saturation components, the ratio of which is generally 4:2:2 or 4:2:0), and the change adopted is generally DCT change. Currently, the integer transformation and quantization methods of the 4×4 residual block in H.264 are specifically:

[0036] 1. Integer transformation and quantization

[0037] For the 4×4 point residual data after motion compensation prediction or intra prediction, the following transformation is performed:

[0038] Y = ...

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Abstract

The invention discloses a simplified loop filtration method for video frequency coding technology, wherein the video frequency data stream is processed by video camera and video frequency collection card, and is inputted into computer for sequent transformation and quantization, then is passed through video frequency processing sub-program for input portion return and continuous conversion, quantization and entropy encoding, finally the encoded video frequency data stream is outputted.

Description

technical field [0001] The patent of the present invention relates to the technical field of computer digital video coding, and is aimed at a video coding system. The specific research content is the loop filter technology. Background technique [0002] Before the existing video images are transmitted, the video needs to be compressed and encoded before being transmitted. The quality of video coding technology will directly affect the video effect after decoding. At present, most technical solutions related to video coding at home and abroad are based on MPEG4 or H.26L standards. Among them, the video coding standard issued by JVT (the organization is an audio and video standardization organization jointly formed by two international standardization organizations, ITU-T and ISO / IEC JTC1), is a very popular coding standard technology at home and abroad. [0003] In the video coding technology provided by JVT, the relevant loop filtering technology is described as follows: ...

Claims

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Application Information

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IPC IPC(8): H04N7/24
Inventor 孔德慧王雁来尹宝才孙艳丰张楠孙磊
Owner BEIJING UNIV OF TECH
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