A Property Protection Method Based on Video Image Background Matching

A background matching and video image technology, applied in the field of property protection based on video image background matching, can solve problems such as false positives of objects and inability to achieve satisfactory results, and achieve the effects of low cost, reduced public property theft, and high accuracy.

Active Publication Date: 2017-02-15
SOUTH CHINA UNIV OF TECH
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AI Technical Summary

Problems solved by technology

The property protection method of this mode has the following deficiencies: (1) When the characteristics of the protected object are not obvious, or when the characteristics are too common, satisfactory results cannot be achieved; (2) When there are changes in light in the environment, or the protected object will be destroyed Frequent false positives when occluded

Method used

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  • A Property Protection Method Based on Video Image Background Matching
  • A Property Protection Method Based on Video Image Background Matching
  • A Property Protection Method Based on Video Image Background Matching

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0038] like figure 1 , a property protection method based on video image background matching, comprising steps in the following order:

[0039] S1. The video frame containing the protected object is obtained by the security camera;

[0040] S2. After initializing the initial video frame image, divide the video frame image into a foreground area, a background area and a reference area, and extract the feature vector F of the background area and the reference area respectively bk , F ct ;

[0041] The initialization is to filter the video frame image by a Gaussian function;

[0042] The eigenvector F bk and F ct Specifically, it is obtained through the following steps:

[0043] (1) For the video frame image, three regions of interest ROI are set, which are respectiv...

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PUM

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Abstract

The invention discloses a property protection method based on video image background matching, comprising the following steps: acquiring a video frame containing a protected object; initializing the initial video frame image and dividing it into a foreground area, a background area and a reference area, and extracting the background respectively The feature vectors Fbk and Fct of the area and reference area; calculate the matching rate threshold T* of Fbk and Fct as the reference threshold for the final decision; when receiving the next frame image, extract the feature vector of the foreground area of ​​the next frame image after initialization Ffg, calculate the matching rate λ of Ffg and Fbk; make an alarm decision based on the matching rate λ and the matching rate threshold T*: when λ is greater than T*, the features of the foreground area match the features of the background area, that is, the protected object has been lost; Otherwise, the object of protection is not lost. The method of the present invention utilizes a new idea of ​​"foreground-background" matching to realize effective protection of property in a complex environment, and can distinguish between total occlusion and loss.

Description

technical field [0001] The invention relates to the field of image and video processing, in particular to a property protection method based on video image background matching. Background technique [0002] At present, there are already commercial property protection technologies and products using sensor technology, but they are not widely used in daily life due to their complicated layout, limited application occasions, and high cost. [0003] On the other hand, surveillance cameras are seen everywhere in our daily life, and most of the current surveillance cameras are only used for manual monitoring or saving data for consultation when necessary. On the one hand, resources are not fully utilized, and on the other hand, it takes a lot of manpower and material resources to search for relevant information from huge video data. [0004] Some existing methods of using video images to realize property protection are all based on the "foreground-foreground" matching mode, that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00
CPCG06V20/41G06V10/758G06V2201/07
Inventor 李远清何盛鸿叶立仁赵连超
Owner SOUTH CHINA UNIV OF TECH
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