如何提高网络摄像头视频输入的帧率? Emgu CV

时间:2012-12-16 13:25:09

标签: c# image-processing emgucv frame-rate

我正在使用emgu CV&捕获/显示网络摄像头视频时,C#并获得低FPS(约8fps)!到目前为止,这是我尝试过的: 我还必须应用一些过滤器,如何才能使我的代码更高效? 有没有办法用GPU处理这些帧?

    private Capture _capture;
    private bool _captureInProgress;
    private Image<Bgr, Byte> frame;
    private void ProcessFrame(object sender, EventArgs arg)
    {
        frame = _capture.QueryFrame();
        captureImageBox.Image = frame;

    }

    private void startToolStripMenuItem_Click(object sender, EventArgs e)
    {
        #region if capture is not created, create it now
        if (_capture == null)
        {
            try
            {
                _capture = new Capture();
            }
            catch (NullReferenceException excpt)
            {
                MessageBox.Show(excpt.Message);
            }
        }
        #endregion

        Application.Idle += ProcessFrame;

        if (_capture != null)
        {
            if (_captureInProgress)
            {
                //stop the capture

                startToolStripMenuItem.Text = "Start";
                Application.Idle -= ProcessFrame;
            }
            else
            {
                //start the capture
                startToolStripMenuItem.Text = "Stop";
                Application.Idle += ProcessFrame;
            }

            _captureInProgress = !_captureInProgress;
        }
    }

1 个答案:

答案 0 :(得分:1)

问题是你正在处理Application.Idle回调上的帧,它只是经常被调用。替换此行

Application.Idle += ProcessFrame

_capture.ImageGrabbed += ProcessFrame

它应该有效。每当帧可用时,都会调用此回调。