private void GetTrackingPoints(FastBitmap img, EyeData leftEye, EyeData rightEye)
{
const int YDownShift = 30;
const int XExpand = 5;
const float eyebrowMult = 0.6f;
int eyebrowWidth = (int)Math.Abs((leftEye.loc.X - rightEye.loc.X) * eyebrowMult);
Rectangle searchArea = new Rectangle();
FastBitmap smoothed = img.GaussianSmooth(5);
FastBitmap sobel = smoothed.SobelGradient();
smoothed.Dispose();
searchArea.Y = Math.Max(leftEye.loc.Y, rightEye.loc.Y) + YDownShift;
searchArea.X = leftEye.loc.X - XExpand;
searchArea.Width = rightEye.loc.X - leftEye.loc.X + (2 * XExpand);
searchArea.Height = (int)((rightEye.loc.X - leftEye.loc.X) * 0.6f);
float[,] trackingPointScores = new float[searchArea.Width, searchArea.Height];
for (int x = searchArea.Left; x < searchArea.Right; ++x)
{
for (int y = searchArea.Top; y < searchArea.Bottom; ++y)
{
float score = 0;
for (int i = 0; i < TrackingPointWidth; ++i)
{
for (int j = 0; j < TrackingPointWidth; ++j)
{
score += sobel.GetIntensity(x + i, y + j);
}
}
trackingPointScores[x - searchArea.Left, y - searchArea.Top] = score;
}
}
mouseTrackingPoint = GetBestTrackingPointWithinColumn(trackingPointScores, searchArea, (leftEye.loc.X + rightEye.loc.X) / 2);
leftEyeTrackingPoint = GetBestTrackingForEye(sobel, leftEye, eyebrowWidth);
rightEyeTrackingPoint = GetBestTrackingForEye(sobel, rightEye, eyebrowWidth);
sobel.Dispose();
}
private CvPoint2D32f GetBestTrackingPointWithinColumn(float[,] scores, Rectangle searchArea, int x)
{
float bestScore = float.NegativeInfinity;
CvPoint2D32f bestPoint = new CvPoint2D32f();
for (int i = x - 2; i <= x + 2; ++i)
{
for (int j = 0; j < searchArea.Height; ++j)
{
if (scores[i - searchArea.Left, j] > bestScore)
{
bestScore = scores[i - searchArea.Left, j];
bestPoint.x = i;
bestPoint.y = j + searchArea.Top;
}
}
}
return(bestPoint);
}
private bool FindTrackingPoints()
{
EyeData leftEyeData, rightEyeData;
if (!FindEyes(out leftEyeData, out rightEyeData))
{
return(false);
}
leftEyePoint = new CvPoint2D32f(leftEyeData.loc.X, leftEyeData.loc.Y);
rightEyePoint = new CvPoint2D32f(rightEyeData.loc.X, rightEyeData.loc.Y);
try
{
GetTrackingPoints(workerImageArray[workerImageArray.Length - 1], leftEyeData, rightEyeData);
}
catch (Exception)
{
return(false);
}
return(true);
}
public override void Init(Size [] imageSizes)
{
Clean();
int imageWidth = imageSizes[0].Width;
int imageHeight = imageSizes[0].Height;
eyeLocator = new EyeLocator(3);
eyeLocator.Reset();
eyeLocatorTickCount = Environment.TickCount;
_flowflags |= CMSConstants.CV_LKFLOW_PYR_A_READY;
validTrackPoint = false;
_pwinsz = new CvSize(10, 10);
_status = new byte[1];
imageSize.Width = imageWidth;
imageSize.Height = imageHeight;
_last_track_points = new CvPoint2D32f[1];
_current_track_points = new CvPoint2D32f[1];
_criteria = new CvTermCriteria(CMSConstants.CV_TERMCRIT_ITER | CMSConstants.CV_TERMCRIT_EPS, 20, 0.03);
_curFrame = CvImageWrapper.CreateImage(imageSize, PIXEL_DEPTH, PIXEL_COLOR_CHANNELS);
_grey = CvImageWrapper.CreateImage(imageSize, PIXEL_DEPTH, PIXEL_CHANNELS);
_prev_grey = CvImageWrapper.CreateImage(imageSize, PIXEL_DEPTH, PIXEL_CHANNELS);
_pyramid = CvImageWrapper.CreateImage(imageSize, PIXEL_DEPTH, PIXEL_CHANNELS);
_prev_pyramid = CvImageWrapper.CreateImage(imageSize, PIXEL_DEPTH, PIXEL_CHANNELS);
_swap_temp = CvImageWrapper.CreateImage(imageSize, PIXEL_DEPTH, PIXEL_CHANNELS);
CMSTrackingSuiteAdapter.SendMessage(CMSConstants.PLEASE_CLICK_TF);
}
public override void Process(System.Drawing.Bitmap [] frames)
{
Bitmap frame = frames[0];
if (frame == null)
{
throw new Exception("Frame is null!");
}
if (frame.Width != imageSize.Width || frame.Height != imageSize.Height)
{
throw new Exception("Invalid frame sizes");
}
_curFrame.setImage(frame);
CvImageWrapper.ConvertImageColor(_curFrame, _grey, ColorConversion.BGR2GRAY);
SwapPoints(ref _current_track_points[0], ref _last_track_points[0]);
cvCalcOpticalFlowPyrLK(_prev_grey._rawPtr, _grey._rawPtr, _prev_pyramid._rawPtr,
_pyramid._rawPtr, _last_track_points, _current_track_points, 1, _pwinsz, 3,
_status, null, _criteria, _flowflags);
if (validTrackPoint && _status[0] == 0)
{
if (CMSLogger.CanCreateLogEvent(false, false, false, "CMSLogStandardStateEvent"))
{
CMSLogStandardStateEvent logEvent = new CMSLogStandardStateEvent();
if (logEvent != null)
{
logEvent.ValidTrackingPoint = false;
CMSLogger.SendLogEvent(logEvent);
}
}
eyeLocatorTickCount = Environment.TickCount;
validTrackPoint = false;
imagePoint = PointF.Empty;
trackingSuiteAdapter.ToggleSetup(true);
trackingSuiteAdapter.SendMessage(CMSConstants.PLEASE_CLICK_TF);
}
LimitTPDelta(ref _current_track_points[0], _last_track_points[0]);
//CvPoint2D32f p = _current_track_points[0];
SwapImages(ref _grey, ref _prev_grey);
SwapImages(ref _pyramid, ref _prev_pyramid);
if (validTrackPoint)
{
imagePoint.X = _current_track_points[0].x;
imagePoint.Y = _current_track_points[0].y;
DrawOnFrame(frame);
}
else
{
if (!autoStartMode.Equals(AutoStartMode.None))
{
long eyeLocatorNewTickCount = Environment.TickCount;
if (eyeLocatorNewTickCount - eyeLocatorTickCount > 10000)
{
if (!autoStartEnded)
{
trackingSuiteAdapter.SendMessage("Please Blink");
autoStartEnded = true;
}
eyeLocator.AddImage(frame);
if (eyeLocator.TrackingPointsFound)
{
CvPoint2D32f p = new CvPoint2D32f();
if (autoStartMode.Equals(AutoStartMode.LeftEye))
{
p = eyeLocator.LeftEyeTrackingPoint;
}
else if (autoStartMode.Equals(AutoStartMode.RightEye))
{
p = eyeLocator.RightEyeTrackingPoint;
}
else if (autoStartMode.Equals(AutoStartMode.NoseMouth))
{
p = eyeLocator.MouseTrackingPoint;
}
eyeLocator.Reset();
imagePoint.X = (int)p.x;
imagePoint.Y = (int)p.y;
_current_track_points[0].x = p.x;
_current_track_points[0].y = p.y;
_last_track_points[0].x = p.x;
_last_track_points[0].y = p.y;
validTrackPoint = true;
trackingSuiteAdapter.ToggleSetup(false);
trackingSuiteAdapter.ToggleControl(true);
}
}
else
{
autoStartEnded = false;
int second = (int)Math.Round(((double)(10000 - (eyeLocatorNewTickCount - eyeLocatorTickCount))) / 1000.0);
trackingSuiteAdapter.SendMessage("Auto Start in " + second + " seconds");
}
}
}
}
