Research And Implementation Of Public Security Video Surveillance Application System

Along with the demand for the social public safety, with the development of modern computer technology, security products to PC closer. The security video surveillance based on image recognition is gradually replacing the traditional monitoring method with its outstanding features, such as light, skillful, small and integrated. In this paper, a video based security video surveillance system is built, which is based on the intrusion detection system. The detection and tracking of objects in the sensitive area of intrusion detection are realized. To provide a single color, color difference between the two dimensions of the object identification, increase the system for different environments of portability.In the DirectShow, security video surveillance system to provide video data connection, the capture of video content, and realize from the video capture and preserve the image file function, the complete set of monitoring, identification and alarm for various security video surveillance system software design. Video surveillance system is mainly divided into video image acquisition module, target recognition and detection module, moving target tracking alarm module. Image acquisition module mainly cameras to capture video images through digital information processing, standardization for digital information, transmission to the system, stored in the frame cache or computer memory stored image storage area, ready for use. Image recognition and detection module mainly realizes the moving object segmentation and recognition function, first of all for video surveillance background modeling, by frame difference method and the background difference method of target detection and recognition, and through this background model of background are updated in real time, the moving object and background separation, extract the moving object image. Moving object tracking module mainly realizes the motion trajectory of target recognition module detect the moving target object tracking and prediction, if consistent with the predefined target motion characteristics, can trigger the corresponding action of the system, such as alarm. The analysis result of this module is the basis of behavior analysis and understanding function in video surveillance system.The innovation of this paper lies in combining frame difference and background difference method the advantages, in the traditional frame difference method based on using a cumulative difference method to detect moving target, combined with Surendra background updating algorithm for object extraction and the background was updated in real time, fire in addition to light interference and achieved good results. Security video surveillance system change many previous surveillance duty personnel, part of the equipment unattended, unable to understand the equipment status, the case of alarm processing is lagging behind the situation, the prevention and control of social public security video has more pertinence and maneuverability and improve police security technology prevention, emergency disposal and unified command and control capability, clear related police and the division of responsibilities, standardize work process, enhance the public security organs rapid response, cooperative operation and precision strike capability, further enhance the level of the social dynamic peace order prevention and control so the comprehensive application system of the design and development of security video surveillance has important practical significance.