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Compared with the traditional video-based traffic surveillance, the highly-mounted video can surveil a larger range of traffic scene, and the vehicles in the video are rarely occluded. These characters of highly-mounted video-based traffic surveillance system make it more suitable for acquiring the traffic information of a larger traffic area. This paper present a framework of using highly-mounted...
In this paper, we propose a novel and simple method for people and vehicles classification in far distance video surveillance. In this approach, moving objects are firstly segmented from background using a background subtraction technique. Secondly, edges of moving objects are extracted using canny operator. Then straight lines of edges of moving objects are extracted by Hough transform and feature...
A master-slave camera surveillance system is composed of one(or more) wide FOV(field of view) static camera and one(or more) dynamic PTZ(Pan-Tilt-Zoom) camera. In such a system, master camera monitors a wide field and provides positional information of interesting objects to slave camera so that it can dynamically track them. This paper describes a novel method for the calibration of master-slave...
Vision-based surveillance technologies are widely used for security and safety. Successful research of multicamera systems has been conducted in recent years. In this article, we propose a chameleon-like vision system based on two pan-tilt-zoom (PTZ) cameras. Compared with conventional binocular vision systems, the advantages of the proposed system lie in its ability to obtain multiresolution, multiview...
The automatic calibration of the intrinsic camera parameters such as the focal length and the camera orientation is an important pre-requisite for many computer vision algorithms in video surveillance. Despite its importance only a few number of methods show their applicability in embedded systems. This paper shows new results of previous work done in camera self-calibration on images of the York...
Camera vision calibration is the key technology of Video-based Traffic Monitoring System (VTMS). PTZ camera is used more and more widely in the VTMS for its high flexibility and mobility which also bring great difficulties in its calibration. This paper presented an automatic method of calibration for PTZ camera used in Expressway Monitoring System so that the system can implement calibration without...
An interactive scene annotation tool for video surveillance is presented in this paper. The annotation process is divided into three stages. (1) camera rough calibration;(2) calibration refinement; (3) major surfaces annotation. Inputs are then rendered in a 3D environment, which again help users check calibration accuracy and annotation correctness. Experiments show that this tool is easy to use...
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