public void DetectFaces()
{
try
{
Update_DetectorImageScale_DividedBy_CameraViewImageScale();
var scale = DetectorImageScale_DividedBy_CameraViewImageScale;
var detectorImageWidth = (int)(CameraViewImageWidth * scale);
var detectorImageHeight = (int)(CameraViewImageHeight * scale);
if (false)
{
Debug.WriteLine("DetectorImageWidth: " + detectorImageWidth);
Debug.WriteLine("DetectorImageHeight: " + detectorImageHeight);
}
if (ApplicationCommonSettings.IsDeveloperRelease)
{
DetectionElapsedStopwatch.Reset(); DetectionElapsedStopwatch.Start();
}
DlibArray2dUcharImage.ResizeImage(detectorImageWidth, detectorImageHeight);
DetectedFaceRectsInCameraViewImage = DlibHogSvm.DetectFaces(DlibArray2dUcharImage, DlibHogSvmThreshold)
.Select(e => new System.Drawing.Rectangle((int)(e.X / scale), (int)(e.Y / scale), (int)(e.Width / scale), (int)(e.Height / scale)))
.ToList();
if (ApplicationCommonSettings.IsDeveloperRelease)
{
DetectionElapsedMilliseconds = (int)DetectionElapsedStopwatch.ElapsedMilliseconds;
}
}
catch (Exception ex)
{
if (ApplicationCommonSettings.IsDebugging)
{
Debugger.Break();
}
Console.WriteLine(ex.Message);
}
}
public void DetectFaceRunWorkerAsync(System.Drawing.Bitmap cameraViewImageBitmap)
{
if (IsDetecting)
{
return;
}
IsDetecting = true;
// Access to Bitmap must be in the same thread.
Debug.Assert(cameraViewImageBitmap != null);
Debug.Assert(cameraViewImageBitmap.Size.IsEmpty == false);
CameraViewImageWidth = cameraViewImageBitmap.Width;
CameraViewImageHeight = cameraViewImageBitmap.Height;
using (var clonedBmp = (System.Drawing.Bitmap)cameraViewImageBitmap.Clone())
{
DlibArray2dUcharImage.SetBitmap(clonedBmp);
}
if (true)
{
Worker.RunWorkerAsync();
}
else
{
DetectFaces();
DetectFaces_RunWorkerCompleted();
}
}
protected virtual void Dispose(bool disposing)
{
if (disposed)
{
return;
}
if (disposing)
{
// dispose managed objects, and dispose objects that implement IDisposable
if (Device != null)
{
// When InitializeOnceAtStartup is not called.
Device.CameraViewImageSourceBitmapCapture.CameraViewImageSourceBitmapChanged -= Device_CameraViewImageSourceBitmapCapture_CameraViewImageSourceBitmapChanged;
}
DetectFaceIntervalMinimumStopwatch.Reset();
DetectFaceIntervalMinimumStopwatch.Start();
while (IsDetecting)
{
System.Threading.Thread.Sleep(50);
if (DetectFaceIntervalMinimumStopwatch.ElapsedMilliseconds > 2000)
{
if (ApplicationCommonSettings.IsDebugging)
{
Debugger.Break();
}
Console.WriteLine("FaceDetection BackgroundWorkder did not completed.");
break;
}
}
if (DlibArray2dUcharImage != null)
{
DlibArray2dUcharImage.Dispose(); DlibArray2dUcharImage = null;
}
if (DlibHogSvm != null)
{
DlibHogSvm.Dispose(); DlibHogSvm = null;
}
}
// release any unmanaged objects and set the object references to null
disposed = true;
}
