Question

我正在尝试从最多6个不同的相机中收集图像。我的代码有效，但它似乎不是面向对象的，因为我必须切换摄像机的索引，将NewFrame事件处理程序设置为单独命名的处理程序，以将图像放入每个摄像机的图片框中。有没有更好的方法（见下面的代码）。

    private void ImageCollector_Load(object sender, EventArgs e)
    {
        webcams = new FilterInfoCollection(FilterCategory.VideoInputDevice);

        Cameras = new VideoCaptureDevice[webcams.Count];
        int index = 0;
        foreach (FilterInfo CaptureDevice in webcams)
        {
            // Enable the cameras display
            ViewLabelflowLayoutPanel.Controls[index].Visible = true;
            ImageLabelflowLayoutPanel.Controls[index].Visible = true;
            ViewflowLayoutPanel.Controls[index].Visible = true;
            ImageflowLayoutPanel.Controls[index].Visible = true;
            CameracomboBox.Items.Add(CaptureDevice.Name);
            try
            {
                Cameras[index] = new VideoCaptureDevice(webcams[index].MonikerString);
                switch (index)
                {
                    case 0:
                        Cameras[index].NewFrame += new NewFrameEventHandler(cam1_NewFrame);
                        break;

                    case 1:
                        Cameras[index].NewFrame += new NewFrameEventHandler(cam2_NewFrame);
                        break;

                    case 2:
                        Cameras[index].NewFrame += new NewFrameEventHandler(cam3_NewFrame);
                        break;

                    case 3:
                        Cameras[index].NewFrame += new NewFrameEventHandler(cam4_NewFrame);
                        break;

                    case 4:
                        Cameras[index].NewFrame += new NewFrameEventHandler(cam5_NewFrame);
                        break;

                    case 5:
                        Cameras[index].NewFrame += new NewFrameEventHandler(cam6_NewFrame);
                        break;
                }//endswitch

                Cameras[index].Start();
            }//endtry
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Error");
            }//endcatch
        }//endforeach
        CameracomboBox.SelectedIndex = 0;
        index++;
    }//endImageCollector_Load

由于

Answer 1

对你有好处，你可以识别代码味道！

我不知道NewFrame是如何工作的，但它可能有一个发送者，它是触发事件的Camera，所以你可以这样做。

    foreach (FilterInfo CaptureDevice in webcams)
    {
        // Enable the cameras display
        ViewLabelflowLayoutPanel.Controls[index].Visible = true;
        ImageLabelflowLayoutPanel.Controls[index].Visible = true;
        ViewflowLayoutPanel.Controls[index].Visible = true;
        ImageflowLayoutPanel.Controls[index].Visible = true;
        CameracomboBox.Items.Add(CaptureDevice.Name);
        try
        {
            Cameras[index] = new VideoCaptureDevice(webcams[index].MonikerString);
            Cameras[index].NewFrame += new NewFrameEventHandler(cam_NewFrame);


            Cameras[index].Start();
        }//endtry
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, "Error");
        }//endcatch
    }//endforeach
    CameracomboBox.SelectedIndex = 0;
    index++;


 public void cam_NewFrame(object sender, EventArgs e){

     VideoCaptureDevice cam = sender as VideoCaptureDevice;
     //do what you need to do with cam here.

 }

这假设发件人设置为相机对象。

设置多个摄像头以捕获图像

1 个答案: