TAILIEUCHUNG - VIDEO SURVEILLANCE_2

Tham khảo sách 'video surveillance_2', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Part 4 Content Analysis and Event Detection for Video Surveillance 16 A Survey on Behaviour Analysis in Video Surveillance Applications Teddy Ko Raytheon Company USA 1. Introduction There is an increasing desire and need in video surveillance applications for a proposed solution to be able to analyze human behaviors and identify subjects for standoff threat analysis and determination. The main purpose of this survey is to look at current developments and capabilities of visual surveillance systems and assess the feasibility and challenges of using a visual surveillance system to automatically detect abnormal behavior detect hostile intent and identify human subject. Visual or video surveillance devices have long been in use to gather information and to monitor people events and activities. Visual surveillance technologies CCD cameras thermal cameras and night vision devices are the three most widely used devices in the visual surveillance market. Visual surveillance in dynamic scenes especially for humans is currently one of the most active research topics in computer vision and artificial intelligence. It has a wide spectrum of promising public safety and security applications including access control crowd flux statistics and congestion analysis human behavior detection and analysis etc. Visual surveillance in dynamic scene with multiple cameras attempts to detect recognize and track certain objects from image sequences and more importantly to understand and describe object behaviors. The main goal of visual surveillance is to develop intelligent visual surveillance to replace the traditional passive video surveillance that is proving ineffective as the number of cameras exceed the capability of human operators to monitor them. The goal of visual surveillance is not only to put cameras in the place of human eyes but also to accomplish the entire surveillance task as automatically as possible. The capability of being able to analyze human movements and their .

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