With the trend of video surveillance enhanced diversification, the development momentum of intelligent video surveillancehas become increasingly strong, intelligent video surveillance is the use of computer vision techniques for video signal analysis, understanding and treatment, under the premise of the operator gives the corresponding rules, Intelligence computer by automatically analyzing the image sequence, the monitoring of objects in the scene to locate, identify and track, and analyze and judge on the basis of the target behavior, i.e., when an abnormality occurs in time to provide an alert or alarm event information effectively assist security personnel to deal with the crisis. Intelligent video surveillance technology in various fields to our lives is a big help. For example, in airports, railway stations and other places of security, and by video surveillance monitor screen, through intelligent analysis can detect dangerous people and targets, greatly improving the efficiency of crisis management; in home security, the intelligent monitoring of the family situation monitoring When the invasion can have Dairen timely warning, or when others attack case, when he could not alarm, video monitoring and analysis to aggressive behavior through the screen will automatically alarm; in intelligent transportation, high-speed capture, license plate recognition and other intelligent cities Video surveillance of IQ expression.
Despite the powerful intelligent video analysis capabilities, but its accuracy is still not satisfactory. In the case of current technology development perspective, intelligent video analysis is to boost the efficiency of the tool monitoring personnel, and does not become completely replace artificial level computer intelligence. According to the analysis affect the accuracy of the main reasons are the following: First, environmental factors, such as background flurry of confusion caused by the changes caused by light changes the target and background colors, as well as day and night due to the different conditions caused by changing the target and the background clarity errors are caused by the occurrence of Factors, which also leads to uncontrollable factors intelligent enough stability analysis itself, this phenomenon remains to be solved for further analysis and optimization analysis techniques, continuing efforts still need to practitioners. Followed by hardware problems, hardware including front-end and back-end server network cameras. Based on the intelligent analysis of the pixel ratio, the image clarity than a direct impact on the results, and the more clear security cameras image pixel, computing also allows the server than on more pressure. For example, intelligent analysis of the license plate recognition, security cameras got a different definition video resources, analysis accuracy rate varied widely, while the efficiency ratio for the back-end server will be significantly different, the use of standard-definition security cameras in a single server analysis capabilities may be 20 Road, accuracy was 90%, while the use of 2 million high-definition network cameras, processing power may be 5-way, but the accuracy rate of up to 98%. These questions need to be efficient in the front-end equipment to promote the upgrading of the situation and cloud computing technology will be able to be a better solution.
Currently, intelligent video surveillance although powerful, but can not be compared, and human, study the fundamental reason is that the computer intelligent video surveillance is under the control of the rules of human behavior to discriminate targets, many of the rules have not yet been defined behavior computers can not be judged , for example, on crowded analysis Intelligence inner region can be analyzed for a certain period of time to reach the predicted number of personnel, these persons are occasionally intentional or aggregation and so can not pass analysis. It also fully reflects the essence of computer intelligence analysis, it still can not replace human work fundamentally, this is precisely the description of a truth: The function also needs to be a strong person to invent something creation and operation of the application.
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