public void GrabImages()
{
while (acquistionThreadActiveEvent.WaitOne(0))
{
lock (this.currentFGHandler)
{
if (this.currentFGHandler != null && this.currentFGHandler.IsInitialized())
{
try
{
HImage imageCaptured = currentFGHandler.GrabImage();
//this.numberOfImagesGrabbedInTriggeredMode++;
if (imageCaptured != null)
{
if (this.ImageGrabbed != null)
{
ImageGrabbed.Invoke(imageCaptured);
}
}
}
catch (HOperatorException hex)
{
switch (hex.GetErrorCode())
{
case 5322:
break;
//case 5311:
// // The fg handle is invalidated. Reset it.
// FrameGrabberProperties currentSettings = this.currentFGProperties;
// this.currentFGProperties.DeviceID = 0;
// this.currentFGProperties.PortIndex = (currentSettings.PortIndex + 1) % 2;
// this.CurrentFGProperties = this.currentFGProperties;
// this.CurrentFGProperties = currentSettings;
// break;
default:
throw hex;
}
}
catch (Exception ex)
{
throw new Exception(string.Format("Exception occurred while grabbing images. \r\n Message : {0} \r\n Stack Trace : {1}",
ex.Message, ex.StackTrace));
}
}
else
{
// Thread.Sleep(1000);
}
}
//Thread.Sleep(100);
// Application.DoEvents();
// if (!this.IsDisposed)
// {
// Action formRefresher = new Action(this.Invalidate);
// this.BeginInvoke(formRefresher);
// }
}
this.acquistionThreadTerminateEvent.Set();
}
private void OnImageGrabbed(object sender, EventArgs e)
{
var mat = new Mat();
if (!videoCapture.Retrieve(mat))
{
return;
}
ImageGrabbed?.Invoke(mat);
}
/// <summary>
/// Removes the handlers for ImageGrabbed event.
/// </summary>
public void RemoveImageGrabbedHandlers()
{
if (ImageGrabbed != null)
{
foreach (ImageGrabbedHandler handler in ImageGrabbed.GetInvocationList())
{
ImageGrabbed -= handler;
}
}
}
/// <summary>
/// Grab a frame
/// </summary>
/// <returns>True on success</returns>
public virtual bool Grab()
{
if (_ptr == IntPtr.Zero)
{
return(false);
}
ImageGrabbed?.Invoke(this, new EventArgs());
return(true);
}
private void Callback(object state)
{
var img = images[currImgIdx];
if (currImgIdx == images.Count - 1)
{
currImgIdx = 0;
}
else
{
currImgIdx++;
}
ImageGrabbed?.Invoke(Utils.GetMat(img.Image));
}
private void OnImageGrabbed(Mat mat)
{
var sw = new Stopwatch();
sw.Start();
ImageGrabbed?.Invoke(mat);
//skip 2/3 of the frames, due to too much work on CPU
//if (counter++ % 3 != 0) return;
var(faces, eyes) = faceEyeDetector.Detect(mat);
if (!faces.Any() || !eyes.Any())
{
return;
}
PersonDetected?.Invoke(mat);
FaceDetected?.Invoke(mat, faces, eyes);
Console.WriteLine($"Frame processing time : {sw.Elapsed}");
}
private void RaiseImageGrabbedEvent(object sender, ImageGrabbedEventArgs e) => ImageGrabbed?.Invoke(sender, e);
protected void ImageProcess(ImageGrabbedEventArgs e)
{
ImageGrabbed?.Invoke(this, e);
}