private Frame GetFrameByChanell(FastBitmap source, ConcurrentDictionary<Point, Point> displacements)
{
Pen pen = new Pen(Color.Aqua);
pen.EndCap = LineCap.ArrowAnchor;
RemoveLongLine(displacements);
Bitmap bmp = new Bitmap(source.Width, source.Height);
using (Graphics graph = Graphics.FromImage(bmp))
{
graph.FillRectangle(Brushes.White, new Rectangle(0, 0, source.Width, source.Height));
}
double[,] chanelXP = new double[source.Width, source.Height];
double[,] chanelXM = new double[source.Width, source.Height];
double[,] chanelYP = new double[source.Width, source.Height];
double[,] chanelYM = new double[source.Width, source.Height];
Graphics graphics = Graphics.FromImage(source.Source);
foreach (var displacement in displacements)
{
int differenceX = displacement.Value.X - displacement.Key.X,
differenceY = displacement.Value.Y - displacement.Key.Y;
bool isPosX = true, isPosY = true;
if (differenceX < 0)
isPosX = false;
if (differenceY < 0)
isPosY = false;
differenceX = (int)(255 * (1 - Math.Min(1, Math.Abs((double)differenceX / 10))));
differenceY = (int)(255 * (1 - Math.Min(1, Math.Abs((double)differenceY / 10))));
double brightnessXColor = Color.FromArgb(differenceX, differenceX, differenceX).GetBrightness();
double brightnessYColor = Color.FromArgb(differenceY, differenceY, differenceY).GetBrightness();
for (int y = displacement.Key.Y - 1; y <= displacement.Key.Y + 1; ++y)
for (int x = displacement.Key.X - 1; x <= displacement.Key.X + 1; ++x)
{
if (isPosX)
{
chanelXP[x, y] = brightnessXColor;
}
else
{
//differenceX = Math.Abs(differenceX);
chanelXM[x, y] = brightnessXColor;
}
if (isPosY)
{
chanelYM[x, y] = brightnessYColor;
}
else
{
//differenceY = Math.Abs(differenceY);
chanelYP[x, y] = brightnessYColor;
}
}
if (displacement.Key.X == displacement.Value.X && displacement.Key.Y == displacement.Value.Y)
graphics.DrawLine(pen, displacement.Key, new Point(displacement.Value.X + 2, displacement.Value.Y + 2));
else
graphics.DrawLine(pen, displacement.Key, displacement.Value);
}
GaussianBlur blur = new GaussianBlur();
Frame frame = new Frame(blur.Filter(chanelXP), blur.Filter(chanelXM), blur.Filter(chanelYP), blur.Filter(chanelYM));
return frame;
}
public ReturnImage(Frame frame, FastBitmap bitmap)
{
this.frame = frame;
this.bitmap = bitmap;
}
private bool GetFlow(byte[] subMask, FastBitmap realFrame, FastBitmap subFrame, MemoryStream stream, string file, out Frame frame)
{
Frame localFrame =null;
bool isNext = true;
List<Point> corners = _harries.Corner(subMask, subFrame.Width, subFrame.Height);
if (corners.Count > 0)
{
_nextFrame = GetBitmap(_currentPosition + (float)TimerInterval, stream, file);
if (_nextFrame != null)
{
_nextSubMask = _vibeModel.GetMask(_nextFrame);
_nextSubFrame = ApplyMask(_nextSubMask, _nextFrame);
localFrame = _lucasKanade.GetImageWithDisplacement(subFrame, _nextSubFrame, corners).frame;
_currentPosition += (float)TimerInterval;
}
else
isNext = false;
}
frame = localFrame;
return isNext;
}