High-resolution human figure automatic recording and comparing system and method in key region

Abstract

The invention relates to high-resolution human figure automatic recording and comparing system and method in a key region. The system comprises a video detecting module, an image acquisition module, a suspected face comparing module and an alarming module. The method comprises the following steps of: scanning and comparing a detection region by the video detecting module in real time; sending a triggering signal to the image acquisition module if a number of pixel information of a detection stripe band exceeds the preset threshold; acquiring the current image information by the image acquisition module through a network camera to form member face records and sending the records to the suspected face comparing module; comparing and matching suspected face information hierarchically one by one by the suspected face comparing module; if the suspected face information is matched successfully, sending alarming information to the alarming module; and carrying out alarming processing by the alarming module according to the alarming information. By adopting the high-resolution human figure automatic recording and comparing system and method in the key region, the system power consumption is reduced, the energy is save, no pollution is caused to the environment, the comparing times of the system is reduced, and the comparing efficiency is improved. The high-resolution human figure automatic recording and comparing system and method in the key region are suitable for large-scale suspected face comparison.

Description

technical field [0001] The invention relates to the field of public security, in particular to the technical field of key area security and portrait monitoring, and specifically refers to a high-definition portrait automatic recording and comparison system and method thereof in key areas. Background technique [0002] With the organization and holding of large-scale international activities such as the Olympic Games and the World Expo, the technology and means of security prevention for specific areas are increasingly valued by the government and relevant management departments. Among them, the identification of human biological characteristics is currently an urgent need in public security and prevention work, and it is also very difficult. Existing research in this field has covered fingerprint recognition, face recognition, iris recognition, voice recognition, palmprint recognition, etc. Among them, face recognition technology has the advantages of wide application range,...

AI Technical Summary

Problems solved by technology

[0005] (1) The clarity of the collected portraits is not enough: At present, industrial-grade CCD analog cameras are mostly used, with a resolution of about 400,000

In the collection of people's faces, the scope of the monitoring area and the clarity of the faces are two contradictory aspects. In the case of a certain image clarity, if you want to obtain clearer people's faces, you need to zoom in as much as possible. The area of ​​the human face in the entire image will cause the monitoring range to be too small, and the system application will be greatly restricted; on the contrary, expanding the monitoring range will often fail to obtain satisfactory facial image clarity;

[0006] (2) When the system collects images, the people entering a specific area usually need to be in a static state, so that the clear face images of the people can be captured, but this method affects the normal movement of the flow of people and significantly reduces the traffic efficiency in this area. Limit the scope of system application;

[0007] (3) When the number of comparison objects exceeds a certain number (generally reaching 10,000 levels), the success rate of system comparison is significantly reduced, and the delay is significantly increased, which limits the scale of system applications

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