基于图像融合的视频监控系统设计

目前的信息监测和预警系统通常采用可见光摄像机、微光电视和热像仪中的一种探测器单独工作或切换工作，针对３种探测器存在不同的探测死区，单独使用不能克服各自的缺点， 无法完整体现信息监测的需求问题，设计了集这３种探测器于一体的图像融合监控系统。通过分析这３种具有互补性的探测器各自成像机理及特点，给出了系统的总体组成。基于融合图像监控系统的工作原理，设计出前端探测系统的主要结构，使摄像转台能实现＋９０至－３０的俯仰和１７５方位旋转，平行光轴的设计和调校使各光轴夹角不大于０．５ ｍｒａｄ；通过加权平均融合和配准技术对系统进行图像融合试验，图像质量以及系统实时性测试表明:基于图像融合的视频监控系统能实现全天侯的信息监测。

Video monitoring system with image fusion technology

The current information monitoring and warning system usually works by adopting one of the detectors such as the TV camera, low-light-level (LLL) TV and infrared thermal imager or switching among them. Every detector has its own advantages and disadvantages, which cannot fully reflect the needs of monitoring information when just using general models. In order to solve this problem, a video monitoring system with image fusion technology was designed. Through the analysis of the imaging mechanism and features of the three complementary detectors, the components of this video monitoring system were introduced. Based on the working principle of the system, the main structure of the front detection system was designed. The turntable achieves the field of view of +90°~-30°in vertical direction and ±175°in horizontal. The optical-axis parallelism error of the system is less than 0.5 mrad. After the discussion of the fusion algorithm and registration of images from different fields of view, the experiment of image fusion was done to test the performance of this system. Finally, image quality and system real-time testing show that the video image fusion monitoring system can realize all-day information monitoring.