流摄像头 ip emgucv

Question

您好，当我使用 emgucv 将此代码运行到 c# 以在图片框中查看实时 ip 摄像头时，它会显示错误 在这部分：

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

错误提示

无法在 emgu.cv.imag 中转换类型 emgu.cv.mat...

我需要更改哪些代码行才能正确运行它......

规格

• 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 Image 使用这个

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

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