用picture控件实现人脸检测画面界面显示和视频流的选择-Achieved with the picture control interface display screen face detection and video streaming options

实现功能：TigerBoard开发板模拟下人脸检测门禁系统，以继电器开关带代替门禁上电磁锁的开关，通过LED灯观察状态-Realization of function: TigerBoard development board simulation under the face detection access control system, with the relay switch to replace the access control on the electromagnetic lo