public void EdgeDetection(short[,] vector, Bitmap bmp, short[,] GXY)
{
LockBitmap lbmp = new LockBitmap(bmp);
lbmp.LockBits();
Parallel.For(1, lbmp.Width - 1, i =>
{
for (int j = 1; j < lbmp.Height - 1; j++)
{
short r1 = (short)(lbmp.GetPixel(i - 1, j - 1).R *vector[0, 0]);
short r2 = (short)(lbmp.GetPixel(i - 1, j).R *vector[0, 1]);
short r3 = (short)(lbmp.GetPixel(i - 1, j + 1).R *vector[0, 2]);
short r4 = (short)(lbmp.GetPixel(i, j - 1).R *vector[1, 0]);
short r5 = (short)(lbmp.GetPixel(i, j).R *vector[1, 1]);
short r6 = (short)(lbmp.GetPixel(i, j + 1).R *vector[1, 2]);
short r7 = (short)(lbmp.GetPixel(i + 1, j - 1).R *vector[2, 0]);
short r8 = (short)(lbmp.GetPixel(i + 1, j).R *vector[2, 1]);
short r9 = (short)(lbmp.GetPixel(i + 1, j + 1).R *vector[2, 2]);
short R = (short)((r1 + r2 + r3 + r4 + r5 + r6 + r7 + r8 + r9));
GXY[i, j] = R;
}
});
lbmp.UnlockBits();
}
public Bitmap ToGreyScale(Bitmap bmp, string outputSource)
{
LockBitmap lbmp = new LockBitmap(bmp);
lbmp.LockBits();
Parallel.For(0, lbmp.Height, i =>
{
for (int j = 0; j < lbmp.Width; j++)
{
Color p = lbmp.GetPixel(i, j);
int a = p.A;
int r = p.R;
int g = p.G;
int b = p.B;
int avg = (r + g + b) / 3;
lbmp.SetPixel(i, j, Color.FromArgb(a, avg, avg, avg));
}
});
lbmp.UnlockBits();
bmp = lbmp.source;
bmp.Save(outputSource);
return(bmp);
}