CameraCapture实时图像视频显示

实时图像视频显示本实例在开发中有用的可以参考。
winform实时显示视频并截取图片，使用了emgucv。
public void CaptureProcess(object sender, EventArgs arg)
{
frame = capture.QueryFrame();
imageBox_capture.Image = frame;
}

private void button_capture_start_Click(object sender, EventArgs e)
{
if (capture == null)
{
try
{
capture = new Capture();
}
catch (NullReferenceException except)
{
MessageBox.Show(except.Message);
}
}

if (capture != null)
{
if (capture_flag)
{
//Application.Idle = new EventHandler(CaptureProcess);
capture_tick.Start();
button_capture_start.Text = "停止";
}
else
{
//Application.Idle -= new EventHandler(CaptureProcess);
capture_tick.Stop();
button_capture_start.Text = "开始";
}
capture_flag = !capture_flag;
}
}

private void button_capture_frame_Click(object sender, EventArgs e)
{
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.Filter = "BMP文件|*.bmp|JPG文件|*.jpg|JPEG文件|*.jpeg|所有文件|*.*";
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
CvInvoke.cvSaveImage(saveFileDialog.FileName, this.frame, (IntPtr)0);
}
}