1，安装EMgu

2,调用摄像头

        public FaceLoad(){InitializeComponent();try{capture = new Capture();capture.Start();//摄像头开始工作capture.ImageGrabbed += frameProcess;//实时获取图像}catch (NullReferenceException excpt){//MessageBox.Show(excpt.Message);}}

 private void frameProcess(object sender, EventArgs arg){//Thread.Sleep(3000);matImg = new Mat();capture.Retrieve(matImg, 0);frame=new Image<Bgr, byte>(matImg.Bitmap); picShow.Image = frame;}

3，效果如下