EMGUCV多摄像头

我试图使用3个相机捕捉照片，但我无法生产所有3个。我有2个外部网络摄像头(微软电影网络摄像头)和1个内部笔记本电脑摄像头，我使用我以前的笔记本电脑，它工作完美，但当我试图使用另一台笔记本电脑时，它无法工作。

我尝试了一些方法，比如测试每个摄像头，我发现我只能使用我的程序同时使用2个摄像头，尽管另一台笔记本电脑上有3个摄像头。

我无法使我的笔记本电脑相机工作。知道怎么做吗?

知道如何得到这个工作吗?

namespace Camera
{
    public partial class CameraOutput : Form
    {
        private Capture _capture, _capture2, _capture3;
        private bool captureInProgress;
        private bool saveToFile;
        private Font font = new Font("Calibri", 14);
        public CameraOutput()
        {
            InitializeComponent();
        }
        private void ProcessFrame(Object sender, EventArgs arg)
        {
            Image<Bgr, Byte> ImageFrame = _capture.QueryFrame();
            Image<Bgr, Byte> ImageFrame2 = _capture2.QueryFrame();
            Image<Bgr, Byte> ImageFrame3 = _capture3.QueryFrame();
            CamImageBox.Image = ImageFrame;
            CamImageBox2.Image = ImageFrame3;
            CamImageBox3.Image = ImageFrame2;

            //image_Form1 = Image.FromFile(@"C:'center90'center90(1).jpg");

            if (saveToFile)
            {
                ImageFrame.Save(@"C:'Users'L31101'Desktop'Camera'Camera'bin'Debug'left'left.jpg");
                ImageFrame3.Save(@"C:'Users'L31101'Desktop'Camera'Camera'bin'Debug'center'center.jpg");
                ImageFrame2.Save(@"C:'Users'L31101'Desktop'Camera'Camera'bin'Debug'right'right.jpg");
                //System.Drawing.Image img = ImageFrame3.ToBitmap();
                //image_Form1 = img;
                CameraCoordinates form2 = new CameraCoordinates(ImageFrame3.ToBitmap(),ImageFrame.ToBitmap(),ImageFrame2.ToBitmap());
                form2.Show();
                saveToFile = !saveToFile;
            }

        }
        private void CameraOutput_Load(object sender, EventArgs e)
        {
            #region if capture is not created, create it now
            pictureBox1.Enabled = true;
            if (_capture == null)
            {
                try
                {
                    _capture = new Capture(1);
                }
                catch (NullReferenceException excpt)
                {
                    MessageBox.Show(excpt.Message);
                }
            }
            if (_capture2 == null)
            {
                try
                {
                    _capture2 = new Capture(2);
                }
                catch (NullReferenceException excpt)
                {
                    MessageBox.Show(excpt.Message);
                }
            }
            if (_capture3 == null)
            {
                try
                {
                    _capture3 = new Capture(3);
                }
                catch (NullReferenceException excpt)
                {
                    MessageBox.Show(excpt.Message);
                }
            }
            #endregion
            if (_capture != null)
            {
                if (pictureBox1.Enabled == false)
                {
                    Application.Idle -= ProcessFrame;
                }
                else
                {
                    Application.Idle += ProcessFrame;
                }
                captureInProgress = !captureInProgress;
            }
            if (_capture2 != null)
            {
                if (pictureBox1.Enabled == false)
                {
                    Application.Idle -= ProcessFrame;
                }
                else
                {
                    Application.Idle += ProcessFrame;
                }
                captureInProgress = !captureInProgress;
            }
            if (_capture3 != null)
            {
                if (pictureBox1.Enabled == false)
                {
                    Application.Idle -= ProcessFrame;
                }
                else
                {
                    Application.Idle += ProcessFrame;
                }
                captureInProgress = !captureInProgress;
            }
        }
        private void ReleaseData()
        {
            if (_capture != null)
            _capture.Dispose();
            if (_capture2 != null)
                _capture.Dispose();
            if (_capture3 != null)
                _capture.Dispose();
        }
        Image image_Form1;
        public Image Image_Form1
        {
            get { return image_Form1; }
            set { image_Form1 = value; }
        }
        private void pictureBox1_Click(object sender, EventArgs e)
        {
            saveToFile = !saveToFile;
            MessageBox.Show("Done");
        }