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Video coding method

A video coding and coding technology, which is applied in the field of video coding to achieve the effect of improving data access speed and solving operational efficiency problems.

Inactive Publication Date: 2008-05-21
SUMAVISION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a method for video coding, which is applicable to the field of AVS, can improve data access speed, and effectively solve the problem of operating efficiency of the AVS video coding program on the DSP platform

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Embodiment Construction

[0026] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0027] The main idea of ​​the technical solution of the present invention is to divide the entire encoding process into three stages according to the characteristics of the AVS standard algorithm, and carry out centralized processing on a group of macroblocks in each stage, so that the instruction and data caches of the DSP are fully utilized , thereby greatly improving the encoding processing efficiency, and is suitable for AVS video encoding of image resolutions such as QVGA, CIF, VGA, and D1.

[0028] FIG. 1 is a flowchart of video encoding in a specific embodiment of the present invention. As shown in Figure 1, the video encoding process includes the following steps:

[0029] Step 101. Divide a frame of original image to be coded into several macroblocks, and divide the macroblock into macroblo...

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Abstract

The invention discloses a video encoding method, applicable for the AVS field. The technological proposal comprises that divide a frame of original image to be encoded into a plurality of macro blocks; divide the macro blocks into macro block groups with each group comprising at least two blocks; save the information required in processing the macro blocks into a DSP storage unit from an external storage unit; conduct movement analysis in turn of all the macro blocks within the macro block groups and save the movement analysis results into the DSP storage unit; conduct compensation coding in turn of all the macro blocks within the macro block groups and save the compensation coding results into the DSP storage unit; conduct entropy coding in turn of all the macro blocks within the macro block groups to acquire and output the bit stream to the external storage unit. The invention has the advantage of improving greatly the data access speed by adopting the technical proposal, which solves the efficiency problem of the AVS video encoding program operation on the DSP platform.

Description

technical field [0001] The present invention relates to the field of multimedia technologies, in particular to a video encoding method. Background technique [0002] The second-generation digital audio and video source coding standards represented by MPEG-4 AVC (H.264) and AVS are getting more and more widely used. With the development of large-scale integrated circuit technology, a digital signal processor (Digital Signal Processor, DSP) can provide an implementation solution for the digital video coding system of the second-generation source coding standard with its powerful computing capability. [0003] However, the AVS standard involves a number of complex algorithms and requires a huge amount of data processing, which still has a contradiction with the processing capability of the DSP. If an AVS video coding system needs to run in real time on the DSP platform, it must be optimized. The quality of the optimization work is directly related to whether the entire system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32H04N19/174
Inventor 张刚张迪余晓建李欣
Owner SUMAVISION TECH CO LTD