Saturday, November 27, 2010

Surveillance video quality diagnostic core technologies and features (1)

Summary: intelligent video (IV, Intelligent Video) from computer vision (CV, Computer Vision) technology (computer vision is the branch of artificial intelligence research), it is in the image and establish the relationship between image description, allowing computers to digital image processing and analysis to understand the content of the video screen, automatic analysis and extract video source key information, intelligent video analysis technology (IVS).

Intelligent video (IV, Intelligent Video) from computer vision (CV, Computer Vision) technology (computer vision is the branch of artificial intelligence research), it is in the image and establish the relationship between image description, allowing computers to digital image processing and analysis to understand the content of the video screen, automatic analysis and extract video source key information, intelligent video analysis technology (IVS).

Monitoring system failure problem diagnosis

Since the 1990 's intelligent video analysis technology was born, after decades of development, which originated in computer vision technology with commercial applications are increasingly being gradually widespread attention.

Some domestic and foreign professional video analysis of manufacturers all have implemented a variety of different forms, such as intelligent video servers, intelligent network camera, intelligent analysis of hard disk recorders, intelligent video analysis software. As video surveillance application, like the high-end perimeter detection, behavior analysis, video troubleshooting capabilities in the successful application of key industry and gradually revealed. Get safe city monitoring system, which on the one hand, in some important sections, community, public places, etc, to video surveillance on suspected target appears to monitor alarm. On the other hand is focused on monitoring system's later operations management process, through video analysis technology to detect front side camera malfunction and video image quality is low, the effective realization of monitoring system maintenance.

Video quality diagnosis system as an innovative product in the field of security, is video analysis technology to safe city monitor system operation and maintenance of typical applications, but also applied a relatively widespread product.

It is mainly used in large-scale monitoring system control center, by controlling the monitoring center matrix hosts video switch output or connecting digital video streaming media management server to get the front end all camera video signal, the video image appears snowflakes, scroll, blur, partial color, screen freeze, gain imbalance and head out, and other common camera failure and malicious occlusion and destruction of the unlawful conduct monitoring equipment to make accurate judgments and alarm information; in video surveillance equipment increasingly today, its monitoring system, necessarily more conducive to help users quickly grasp the front-end device operation, easy maintenance of security systems.

Video quality diagnostic core technologies

Video quality diagnosis system using video image analysis method for detecting and monitoring system in various video faults.

From the now widespread failure type of camera, the impact of video surveillance system and video quality of many factors, mainly in General, there are the following:

· Camera settings or device aging, contains the camera resolution, camera sensitivity to light, the lens focus adjustment, color calibration, etc.;

· Large monitoring network video signal through long-distance cable transmission, multi-level matrix switch and multi-level network forwards, power supply, controller, and so on many kinds of interference signals might have on the video signals strong interference, circuit, connector is loose and other aging scene environment changes may bring video noise;

PTZ dome camera · heavy use, long-term campaign zoom may allow some ball direction error occurs, uncontrollable, etc.

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