Video coding method based on video content

A technology for video coding and video content, applied in the field of video coding systems, can solve the problems of different video compression effects, ignoring the characteristics of video content, unable to fully utilize the relationship between video content objects, etc. The effect of high coding efficiency

Inactive Publication Date: 2003-10-22
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

The biggest disadvantage of this technology is that it does not consider the characteristics of the video content and cannot make full u

Method used

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  • Video coding method based on video content
  • Video coding method based on video content
  • Video coding method based on video content

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Embodiment Construction

[0027] according to Figure 1-Figure 5 Embodiments of the present invention are configured. In the present invention, the computer is a CPU above Pentium 2, a hard disk above 10G, and an ordinary desktop microcomputer with general image processing capability. Using the existing coding standard version 6.0 provided by JVT, the program of the loop filter is completely replaced. The calculation functions of four influencing factors and the modified interpolation filter function are added here.

[0028] The specific implementation plan is:

[0029] 1. The pixel value difference difference scheme of adjacent pixels:

[0030] When loop filtering is performed for each macroblock of a video image, interpolation is performed on 4 adjacent pixel points. The specific position relationship is shown in the figure: . In the figure, P0, P1, P2, P3, Q0, Q1, Q2, and Q3 represent 8 pixel positions. Their interpolation scheme uses fixed coefficients for both the coefficients and the chan...

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Abstract

The invention is a kind of video coding method based on video content, refers to digital video coding field. It inputs the video data flow which is through camera vidicon and video collcting card, the video data flow is changed and quantized in the computer, then carries on entropy coding, finally it outputs the coded data flow. The video processing subprogram compensates and dopes the video; thering filtering subprogram is based on JVT video coding technology, inputs OP value of picture coding, the coefficient between macro, the pel difference of adjoining pels, the mean value of macro movement vector into the ring filter, gats the weighted mean of the four infection factors and adds into the interpolation filter function.

Description

Technical field: [0001] The invention relates to the technical field of computer digital video coding, and is aimed at a video coding system. 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 ring filtering technology is described as follows: the ring filtering interpolation function obtained through statistics is used, and...

Claims

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Application Information

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IPC IPC(8): G06F9/40G06T7/20G06T9/00
Inventor 尹宝才王雁来孔德慧张楠
Owner BEIJING UNIV OF TECH
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