Question

你好，当我运行此代码到c＃与emgucv在一个图片框中看到一个实时的ip摄像头它显示一个错误在这一部分：

Mat frame = new Mat();
_capture.Retrieve(frame, 0);
captureImageBox.Image = frame;

错误提及

无法在emgu.cv.imag中转换类型emgu.cv.mat ...

我需要更改哪些代码才能正确运行....

功能

Visual studio 2015

emgucv v3.1 x64

public partial class Form1 : Form
{
private Capture _capture = null;
private bool _captureInProgress;
public Form1()
{
    InitializeComponent();
    CvInvoke.UseOpenCL = false;
    try
    {
        _capture = new Capture("http://webcam.st-malo.com/axis-cgi/mjpg/video.cgi?");
        _capture.ImageGrabbed += ProcessFrame;
    }
    catch (NullReferenceException excpt)
    {
        MessageBox.Show(excpt.Message);
    }
}

private void ProcessFrame(object sender, EventArgs arg)
{
    Mat frame = new Mat();
    _capture.Retrieve(frame, 0);

    captureImageBox.Image = frame;

}

private void captureButton_Click(object sender, EventArgs e)
{
    if (_capture != null)
    {
        if (_captureInProgress)
        {  //stop the capture
            captureButton.Text = "Start Capture";
            _capture.Pause();
        }
        else
        {
            //start the capture
            captureButton.Text = "Stop";
            _capture.Start();
        }

        _captureInProgress = !_captureInProgress;
    }
}

}

Answer 1

尝试将Mat解析为图像使用这个

Mat frame = new Mat();
_capture.Retrieve(frame, 0);

captureImageBox.Image = frame.ToImage<Bgr, Byte>();

流相机ip emgucv

1 个答案: