 社区视频监控系统主要是利用摄像头和视频采集卡进行视频监控，实现功能：视频监控、云台控制、快照和录像、录像回放、定时自动监控、监控管理及日志。 - community video surveillance system is to use camera and video capture card for video surveillance, to achieve functions: video monitoring, PTZ control, snapsh

程序原理为采用avicap调用摄像头，然后通过设置监控对比图像，当摄像头中的图像与监控对比图像不一致时，即发出警报并可以自动发送当前监控图像到指定邮箱中-The program theory avicap call camera, then set monitor contrast image, when the image in the camera and monitor contrast image is inconsistent, that is an alarm and automat