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Method for searching monitor video target

A technology for target search and surveillance video, which is applied in the field of surveillance video target search, and can solve the problem of difficult image search methods.

Active Publication Date: 2015-08-26
CAS OF CHENGDU INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a monitoring video target search method to solve the technical problem that the image search method in the prior art is difficult to be directly applied to the specific target search in the video, so as to achieve faster search speed and accuracy

Method used

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  • Method for searching monitor video target
  • Method for searching monitor video target

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Embodiment Construction

[0021] Below, combine Figures 1 to 5 , the present invention will be described in detail with a specific embodiment.

[0022] Step 1, perform feature extraction on the input search target T, including HSV color histogram features, edge point number and area ratio features, and perceptual hash fingerprint features.

[0023] The HSV color histogram feature C is to divide the HSV color space into 105 groups, and then count the number of pixels on the image that fall into each group, and normalize to get C. Among them, the chroma H is divided into 12 equal parts, and the saturation S is divided into 8 equal parts to obtain 96 groups, and then separately divided into 9 groups for black, white and gray to obtain a total of 105 groups.

[0024] In order to improve the calculation speed, in one embodiment, the histogram is counted by the look-up table mapping method, that is, a mapping table Map(R, G, B) from the RGB space directly to the color value of the histogram is obtained, an...

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Abstract

A method for searching a monitor video target comprises the steps as follows: step 1, obtaining a searched target image and extracting feature of the searched target image so as to establish a target model; step 2, obtaining an input video and establishing a background model according to the input video so as to extract a moving foreground in each video frame and detecting to obtain a candidate target area via a connected domain, calculating a possible object target frame position by using an edge outline estimation method in the candidate target area; step 3, using the feature similarity of an object sub-frame of the candidate target area, which has maximum comprehensive similarity with a search target as similarity corresponding to the candidate target area; storing relative information of the candidate target area in a database if the comprehensive similarity of the candidate target area and the search object is more than a threshold value; step 4, classifying and selecting record in the database so as to reduce the emerging times of a repeated object in a continuous time period in the selecting result; step 5, inquiring the database and ranking search results according to a preset condition.

Description

technical field [0001] The invention relates to the fields of computer vision technology and image processing, in particular to a method for searching a monitoring video target. Background technique [0002] With the advancement of science and technology, the definition of cameras continues to increase, and the cost continues to decrease. Surveillance networks have spread throughout every corner of society. How to quickly and efficiently obtain key information from the massive video information generated by the surveillance network has become an urgent problem to be solved. In the process of handling cases, public security criminal police usually need to search for a specific target in a large number of surveillance videos, such as the search for criminal suspects and vehicles involved in the accident. In the traditional search process, the search for the target is completed by human eyes , requires a lot of human resources, and its search accuracy will decrease with the fat...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/7847G06F16/785G06F16/7857
Inventor 李天宇陈斌李科赵雪专张衡钱基德勾承甫陈刚
Owner CAS OF CHENGDU INFORMATION TECH CO LTD
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