Hi am new on opencvsharp programming. I am trying to make a program which would stream my camera view via picturebox. The while loop crashes my program. Without the loop it works fine, although it shows only a picture. I am using opencvsharp3.
VideoCapture capture;
Mat frame;
Bitmap image;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
if (button1.Text.Equals("Start"))
{
frame = new Mat();
capture = new VideoCapture();
capture.Open(2);
capture.Read(frame);
Bitmap image = BitmapConverter.ToBitmap(frame);
while (true)
{
pictureBox1.Image = image;
}
button1.Text = "Stop";
}
else
{
capture.Release();
button1.Text = "Start";
}
}
Update: thanks to GuidoG comment, i have managed to figure it out.
VideoCapture capture;
Mat frame;
Bitmap image;
private Thread camera;
int isCameraRunning = 0;
private void CaptureCamera()
{
camera = new Thread(new ThreadStart(CaptureCameraCallback));
camera.Start();
}
private void CaptureCameraCallback()
{
frame = new Mat();
capture = new VideoCapture();
capture.Open(2);
while (isCameraRunning == 1)
{
capture.Read(frame);
image = BitmapConverter.ToBitmap(frame);
pictureBox1.Image = image;
image = null;
}
}
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
if (button1.Text.Equals("Start"))
{
CaptureCamera();
button1.Text = "Stop";
isCameraRunning = 1;
}
else
{
capture.Release();
button1.Text = "Start";
isCameraRunning = 0;
}
}
}
}
private void CaptureCameraCallback()
{
frame = new Mat();
capture = new VideoCapture();
capture.Open(2);
while (isCameraRunning == 1)
{
capture.Read(frame);
image = BitmapConverter.ToBitmap(frame);
pictureBox1.Image = image;
image = null;
}
}
The part should be put in the begin BeginInvoke(). You need to create a delegate function