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Video interesting region double-stream encoding and transmitting method and system

A technology of region of interest and transmission method, applied in image communication, selective content distribution, electrical components, etc., can solve the problem of time domain redundant information elimination, etc., to achieve the effect of improving bandwidth utilization and strengthening coding

Inactive Publication Date: 2013-01-30
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

In the paper "Scalable ROI Algorithm for H.264 / SVC-Based Video Streaming" (IEEE International Conference on Consumer Electronics (ICCE), 2011), ROI is enhanced to encode the central area of ​​the video, but the region of interest is divided based on the human eye The model is not proposed for surveillance video sequences, and it does not remove redundant information in the time domain

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  • Video interesting region double-stream encoding and transmitting method and system
  • Video interesting region double-stream encoding and transmitting method and system
  • Video interesting region double-stream encoding and transmitting method and system

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Embodiment Construction

[0031] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0032] In this embodiment, based on the JSVM platform, enhanced coding is performed on the region of interest in the abnormal time period, and then the obtained code stream is divided into a basic layer code stream and an enhanced layer code stream for dual-stream transmission. Under the limited bandwidth, the content of the region of interest in the abnormal time period can be seen more clearly in the video restored by the backend.

[0033] The ROI dual-stream coding transmission method involved in this embodiment includes the following specific steps:

[0034] Step 1...

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Abstract

The invention discloses a video interesting region double-stream encoding and transmitting method and a video interesting region double-stream encoding and transmitting system. By the method, an interesting region is subjected to enhanced encoding by adopting a relatively high code rate, and a non-interesting region is encoded by adopting a common code rate; a generated basic stream and a generated enhanced stream can be transmitted under a condition of finite bandwidth according to distribution in a time domain. The information determination degree is determined according to the probability of a specific semantic event, and user-oriented interesting encoding is executed, so that information redundancy the user is not interested in can be effectively removed from a monitored video, and the overall encoding efficiency of the monitored video can be greatly improved. By the method, an extension-type encoding model with adaptive determination degree and an optimal channel space domain-time domain resource distribution double-stream packaging method are constructed by researching the information determination degree of the monitored video, so that adaptive encoding of interesting information of the monitored video is realized; and the monitored video encoding efficiency is improved.

Description

technical field [0001] The present invention relates to a method and system in the technical field of video encoding and transmission, in particular to a method for enhancing encoding for an area of ​​interest and then performing dual-stream transmission on code streams. Background technique [0002] With the rapid development of politics and economy in today's society, video surveillance, as an effective preventive measure and post-event investigation method, has received more and more attention. Users' requirements for video surveillance systems are different from traditional entertainment videos. There are two main requirements: real-time requirements and high-quality requirements (also called after-the-fact access requirements). [0003] H.264 is the tenth part of MPEG-4. It is proposed by the Joint Video Team (JVT, Joint Video Team) jointly composed of ITU-T Video Coding Experts Group (VCEG) and ISO / IEC Motion Picture Experts Group (MPEG). Compressed digital video code...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/643H04N21/24H04N21/238
Inventor 张重阳卢贤龙
Owner SHANGHAI JIAO TONG UNIV
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