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Video sequence coding/decoding structure

An architecture and video sequence technology, applied in the field of video codec, to achieve the effect of stable coding efficiency

Inactive Publication Date: 2008-04-16
WUHAN UNIV
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Problems solved by technology

[0016] The technical problem to be solved by the present invention is to propose a video sequence codec architecture, which mainly solves the problem of compatibility with traditional coding methods, the transmission problem of heterogeneous networks, how to ensure the image quality of the region of interest, and how to adapt to different lighting conditions. Image encoding issues in terms of conditions and weather conditions, and security issues of encoded information

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  • Video sequence coding/decoding structure

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Embodiment

[0040] A video sequence coding architecture with a two-layer structure of a base layer and an enhancement layer as shown in FIG. 1 and a video sequence decoding architecture with a two-layer structure of a base layer and an enhancement layer as shown in FIG. 2 are adopted.

[0041] 1. The coding module of the basic layer adopts the coding structure of the AVS video coding standard.

[0042] 2. The enhancement layer coding module adopts hierarchical B frame technology to realize time domain classification:

[0043]As shown in Figure 3: the basic layer adopts I-frame or P-frame image coding type, and the enhancement layer adopts B-frame image coding type, by marking each coded frame in the picture group in the time domain hierarchy, and coding In the B frame process, search and obtain two reference frames of the current coded B frame according to the time domain hierarchy level. The reference frame can be an I frame or a P frame, or a B frame, so that the frame rate of the code ...

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Abstract

The invention discloses an audio coding or decoding system structure, which comprises a basic layer coding module, a coding control module, an accumulation layer coding module; wherein, the image of the basic layer coding module eliminates the information redundancy between the basic layer and the accumulation layer using sample as reference frame or interlayer prediction of the accumulation layer; the coding control module controls the coding method of the middle interested area between the basic layer and the accumulation layer according to the strategy of the interested area, and judges and controls the 24-hour coding module between the basic layer and the accumulation layer through light mode; the coding module of the accumulation layer realizes coding to input audio current of the accumulation layer with adoption of delaminating technology on the basis of all the coding modules. The audio coding and decoding system structure can not only realize the integration of the basic layer to the current audio coding standard, but also fulfill the special requirements to audio coding of security monitoring.

Description

technical field [0001] The invention relates to the field of video coding and decoding, in particular to a video sequence coding and decoding architecture adapted to the special requirements of security monitoring. Background technique [0002] Video surveillance technology is developing in the direction of digitization, networking and intelligence. Video codec technology is the basis and key technology for video surveillance. While video surveillance continues to develop, the requirements for video codec technology used in the security field are also increasing. But at present, there is no audio and video compression standard specifically for video surveillance applications at home and abroad. The existing international source coding standards such as: MPEG-2, MPEG-4, H.264, etc. cannot fully meet the special needs of security. [0003] At present, there are many types of video surveillance equipment, and the adopted video compression transmission standards and transmissio...

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Application Information

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IPC IPC(8): H04N7/26H04N19/167H04N19/30H04N19/467H04N19/543H04N19/70
Inventor 胡瑞敏刘琼李明牟晓弦
Owner WUHAN UNIV
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