private void HandleFaceBoundingBoxAvailable(object sender, FaceDetectionEventArgs e)
{
faceLeft = e.Left;
faceRight = e.Right;
faceTop = e.Top;
faceBottom = e.Bottom;
faceLockAcquired = e.LockAcquired;
}
private void OnFaceBoundingBoxAvailable(int left, int right, int top, int bottom, Boolean lockAcquired)
{
if (FaceBoundingBoxAvailable != null)
{
EventHandler <FaceDetectionEventArgs> handler = FaceBoundingBoxAvailable;
FaceDetectionEventArgs e = new FaceDetectionEventArgs(left, right, top, bottom, lockAcquired);
handler(this, e);
}
}
// To do (for the students): Write this two methods (HandleFaceDetected) to handle the face detection. Perhaps pass
// the face to a recognizer?
private void HandleFaceDetected(object sender, FaceDetectionEventArgs e)
{
// Test: Uncomment to see the bounding box of the detected face.
/* string information = DateTime.Now.ToString("yyyyMMdd HH:mm:ss") + " Face detected. Bounding box: (" + e.Left.ToString() + "," +
* e.Top.ToString() + "," + e.Right.ToString() + "," + e.Bottom.ToString() + ")";
* ColorListBoxItem item = new ColorListBoxItem(information, faceDetectionColorListBox.BackColor, faceDetectionColorListBox.ForeColor);
* faceDetectionColorListBox.Items.Insert(0, item); */
}
private void ThreadSafeHandleFaceDetected(object sender, FaceDetectionEventArgs e)
{
if (e.LockAcquired)
{
if (InvokeRequired)
{
this.Invoke(new MethodInvoker(() => HandleFaceDetected(sender, e)));
}
else
{
HandleFaceDetected(sender, e);
}
}
}
private void UserConsistencyChecker(FaceDetectionEventArgs e)
{
//Ignore too small detections
int width = Math.Abs(e.Right - e.Left);
int height = Math.Abs(e.Top - e.Bottom);
if (width < minRectangleSize && height < minRectangleSize)
{
return;
}
if (sw.IsRunning)
{
sw.Stop();
}
else
{
sw.Start();
return;
}
interpolatedFrequency = Lerp(interpolatedFrequency, (float)sw.ElapsedMilliseconds, 0.3f);
sw.Reset();
Console.WriteLine(interpolatedFrequency);
//Only sends to client when interpolatedFrequency passes lower than minFaceFrequency
if (minFaceFrequency >= interpolatedFrequency)
{
if (FaceDetected == false)
{
Console.WriteLine(interpolatedFrequency + " HIT");
FaceDetected = true;
client.Send("FaceDetected");
}
}
else
{
if (FaceDetected == true)
{
FaceDetected = false;
client.Send("FaceUndetected");
}
}
sw.Start();
}
