private unsafe bool FindEyes(out EyeData leftEye, out EyeData rightEye)
{
const byte DifferenceThreshold = 25;
int[,] changeCount = new int[workerImageArray[0].Width, workerImageArray[0].Height];
for (int i = 0; i < workerImageArray.Length - 1; ++i)
{
FastBitmap differenceImage = workerImageArray[i].GetDifferenceImage(workerImageArray[i + 1], DifferenceThreshold);
FastBitmap erosionImage = differenceImage.ApplyCrossErosionMask();
ColorARGB *currentPosition = erosionImage.StartingPosition;
for (int y = 0; y < erosionImage.Height; ++y)
{
for (int x = 0; x < erosionImage.Width; ++x)
{
if (currentPosition->B == 255)
{
++changeCount[x, y];
}
++currentPosition;
}
}
differenceImage.Dispose();
erosionImage.Dispose();
}
FastBitmap finalDifferenceImage = new FastBitmap(workerImageArray[0].Width, workerImageArray[0].Height);
ColorARGB *currentPositionResult = finalDifferenceImage.StartingPosition;
for (int y = 0; y < finalDifferenceImage.Height; ++y)
{
for (int x = 0; x < finalDifferenceImage.Width; ++x)
{
byte color = 0;
if (changeCount[x, y] > 0)
{
color = 255;
}
currentPositionResult->A = 255;
currentPositionResult->R = color;
currentPositionResult->G = color;
currentPositionResult->B = color;
++currentPositionResult;
}
}
return(FindEyesFromDifferenceImage(workerImageArray[workerImageArray.Length - 1], finalDifferenceImage, out leftEye, out rightEye));
}