Method and system for global encoding of urban traffic surveillance video

A surveillance video, global coding technology, applied in the field of urban traffic surveillance video coding, can solve problems such as urban surveillance data redundancy

Active Publication Date: 2015-01-21
WUHAN UNIV
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Problems solved by technology

Various types of urban vehicles with similar, identical, and long-term stability are repeatedly captured by surveillance cameras all over the city, resulting in a large amount of urban surveillance data redundancy

Method used

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  • Method and system for global encoding of urban traffic surveillance video
  • Method and system for global encoding of urban traffic surveillance video
  • Method and system for global encoding of urban traffic surveillance video

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specific Embodiment approach

[0128] The specific implementation of the construction of the three-layer knowledge dictionary in this step is as follows:

[0129] (1) The construction of the first-level knowledge dictionary, that is, the construction of the common visual texture information knowledge dictionary of all types of global moving vehicles.

[0130] The sparse coding method is used to construct a knowledge dictionary of common visual texture information for all types of sports vehicles. The cost function is as follows:

[0131] ( D 1 , α 1 ) = arg min D 1 , α 1 X c = 1 C | | y c - D 1 α 1 c | | 2 2 + τ X c = 1 C | | α 1 c | | 1 - - - ( 1 )

[0132] Among them, D 1 Represents the first-level knowledge dictionary; C represents the number of types of global moving vehicles, and c represents the type number of global moving vehicles; y c Represents the co...

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Abstract

The invention discloses a method and system for global encoding of an urban traffic surveillance video. The method comprises the steps of segmenting the original surveillance video into a vehicle video and a vehicle-removed video, encoding the vehicle-removed video through the optional differential encoding method, extracting a global feature parameter set of global moving vehicles in the vehicle video, and carrying out global encoding on the vehicle video based on global feature parameters. According to the method and system, global redundancy in the surveillance video is removed on the basis of removing scene redundancy, and therefore the efficiency of encoding and compression of the urban traffic surveillance video is effectively improved.

Description

Technical field [0001] The invention belongs to the technical field of urban traffic monitoring video coding, and in particular relates to a global coding method and system for urban traffic monitoring video. Background technique [0002] The goal of video signal compression coding technology is to characterize video information with as few bits as possible while ensuring a certain reconstruction quality. The traditional video coding method based on Shannon's information theory starts from the signal processing level, based on pixels and blocks, adopts a hybrid coding framework combining transform, prediction, and entropy coding, and improves compression performance by mining the spatiotemporal redundancy of the image and video signal itself. However, most of the current video compression technologies are for non-specific applications. In recent years, video compression technologies developed for the characteristics and needs of specialized applications (such as surveillance vide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/527H04N19/103H04N19/90H04N7/18
CPCH04N7/18
Inventor 胡瑞敏马民生肖晶胡金晖尹黎明
Owner WUHAN UNIV
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