User talk:Ezik

pedestrian detection with a webcam running slow

I'm learning to program pedestrian detection with a webcam, but I found the problem, when the program is run the video is slow, help me to solve this problem, thanks. source code that I use like this:

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms;

using Emgu.CV; using Emgu.CV.Structure; using Emgu.Util; using Emgu.CV.UI; using Emgu.CV.GPU;

namespace PedestrianDetection {

   public partial class CameraCapture : Form
   {
       //declaring global variables
       private Capture capture; //takes images from camera as image frames
       Boolean camFlip = true;
  

       public CameraCapture()
       {
           InitializeComponent();
       }
       
       private void ProcessFrame(object sender, EventArgs arg)
       {
           Image<Bgr, Byte> ImageFrame = capture.QueryFrame();

           if (ImageFrame != null)   // confirm that image is valid
           {
               Image<Gray, byte> grayframe = ImageFrame.Convert<Gray, byte>();
   
               long  processingTime;
               Rectangle[] results = FindPedestrian.Find(ImageFrame, out processingTime);

               foreach (Rectangle rect in results)
                   ImageFrame.Draw(rect, new Bgr(Color.Red), 10);
           }
           CamImageBox.Image = ImageFrame;
       }

       private void btnStart_Click(object sender, EventArgs e)
       {
           if (capture != null)
           {
               if (btnStart.Text == "Pause")
               {  //if camera is getting frames then pause the capture and set button Text to
                   // "Resume" for resuming capture
                   btnStart.Text = "Resume"; //
                   Application.Idle -= ProcessFrame;
               }
               else
               {
                   //if camera is NOT getting frames then start the capture and set button
                   // Text to "Pause" for pausing capture
                   btnStart.Text = "Pause";
                   Application.Idle += ProcessFrame;
               }
           }
       }

       private void ReleaseData()
       {
           if (capture != null)
               capture.Dispose();
       }

       private void cbCamIndex_SelectedIndexChanged(object sender, EventArgs e)
       {
           //Set the camera number to the one selected via combo box
           int CamNumber = -1;
           CamNumber = int.Parse(cbCamIndex.Text);

           //Start the selected camera
           #region if capture is not created, create it now
           if (capture == null)
           {
               try
               {
                   capture = new Emgu.CV.Capture(CamNumber);
               }
               catch (NullReferenceException excpt)
               {
                   MessageBox.Show(excpt.Message);
               }
           }
           #endregion

           //Start showing the stream from camera
           btnStart_Click(sender, e);
           btnStart.Enabled = true;
           if (camFlip == true)
           {
               capture.FlipHorizontal = !capture.FlipHorizontal;
               camFlip = false;
           }
       }
   }

}