private void ProcessFrame(object sender, EventArgs e)
{
var mat = new Mat();
this.webcam.Read(mat);
CudaImage <Bgr, Byte> gpuImg = new CudaImage <Bgr, byte>();
gpuImg.Upload(mat);
CudaImage <Gray, Byte> grayImg = gpuImg.Convert <Gray, Byte>();
GpuMat region = new GpuMat();
haarCascade.DetectMultiScale(grayImg, region);
Rectangle[] faceRegion = haarCascade.Convert(region);
Rectangle face;
if (faceRegion.Length > 0 && faceRegion[0].Width > 0)
{
if (!IsRegionValid(faceRegion[0]))
{
return;
}
face = faceRegion[0];
float meterPerPxl = (userFaceSize / face.Width) / 100f;
this._userPosition.x = -(face.X + (face.Width / 2) - (camWidth / 2)) * ((userFaceSize / face.Width) / 100);
this._userPosition.y = -(face.Y + (face.Height / 2) - (camHeight / 2)) * ((userFaceSize / face.Width) / 100);
this._userPosition.z = -camDistanceRatio * ((userFaceSize / face.Width) / 100);
currentFace = face;
this.newFaceDetected = true;
}
else
{
currentFace.Width = -1;
}
/*if (webcamFeedbackEnabled) {
* var img = mat.ToImage<Bgr, byte>();
* for (int i = 0; i < faceRegion.Length; i++) {
* if (i == 0)
* img.Draw(face, new Bgr(255, 255, 0), 4);
* else
* img.Draw(faceRegion[i], new Bgr(0, 255, 255), 4);
* }
*
* Dispatcher.InvokeAsync(() => {
* Debug.Log(img.Convert<Rgb, byte>().Bytes.Length);
* currentFrame.LoadRawTextureData(img.Convert<Rgb, byte>().Bytes);
* currentFrame.Apply();
* img.Dispose();
* });
* }*/
}