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Hi

I would like to open USB camera and acquiring images under windows form application. I create an application but the streaming of images is going very slowly (The images appear and disappear in big intervals). Where is my error. Using a console application there is no such a problem. Here is my code.

timer1->Interval = 1; VideoCapture cap(0); Mat frame; private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {

             timer1->Start();

 }
private: System::Void timer1_Tick(System::Object^  sender, System::EventArgs^  e) {

             cap.read(frame);

             graphics = pictureBox1->CreateGraphics();
             System::IntPtr ptr(frame.ptr());

             b  = gcnew System::Drawing::Bitmap(frame.cols,frame.rows,frame.step,System::Drawing::Imaging::PixelFormat::Format24bppRgb,ptr);
             System::Drawing::RectangleF rect(0,0,pictureBox1->Width,pictureBox1->Height);

             graphics->DrawImage(b,rect);

             pictureBox1->Refresh();
         }

Hi

I would like to open USB camera and acquiring images under windows form application. I create an application but the streaming of images is going very slowly (The images appear and disappear in big intervals). Where is my error. Using a console application there is no such a problem. Here is my code.

timer1->Interval = 1;
VideoCapture cap(0);
Mat frame;
private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
 
{

                 timer1->Start();

  }
 private: System::Void timer1_Tick(System::Object^  sender, System::EventArgs^  e) {

              cap.read(frame);

              graphics = pictureBox1->CreateGraphics();
              System::IntPtr ptr(frame.ptr());

              b  = gcnew System::Drawing::Bitmap(frame.cols,frame.rows,frame.step,System::Drawing::Imaging::PixelFormat::Format24bppRgb,ptr);
              System::Drawing::RectangleF rect(0,0,pictureBox1->Width,pictureBox1->Height);

              graphics->DrawImage(b,rect);

              pictureBox1->Refresh();
          }