识别摄像头视频中的数字。点击手动抓图，完成抓图和识别功能。 设置好时间间隔，比如2秒，点击开始监视，则每隔2s抓图、识别一次。点击停止监视则停止抓图。-Identification number of the video camera. Click on the manual capture, complete capture and recognition. Set time interval, such as 2 seconds, click Start Monitoring, then