private static bool Delete2s(BitmapContext context, int[,] pixels, bool change)
{
int width = context.Width;
int height = context.Height;
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
if (pixels[i, j] == 2)
{
int weight = CalculateWeight(i, j, context);
if (A.Contains(weight))
{
pixels[i, j] = 0;
PixelHelper.SetWhite(context, i, j);
change = true;
}
else
{
pixels[i, j] = 1;
}
}
}
}
return(change);
}
public static WriteableBitmap DilateAndErode(WriteableBitmap writeableBitmap, bool?[,] matrix3x3)
{
int width = writeableBitmap.PixelWidth;
int height = writeableBitmap.PixelHeight;
WriteableBitmap newImage = writeableBitmap.Clone();
using (BitmapContext newcontext = newImage.GetBitmapContext())
{
using (BitmapContext context = writeableBitmap.GetBitmapContext())
{
for (int x = 0; x < width; ++x)
{
for (int y = 0; y < height; ++y)
{
bool exaclyMatch = true;
for (int i = 0; i < 3; ++i)
{
for (int j = 0; j < 3; ++j)
{
bool?matVal = matrix3x3[i, j];
int cX = x - 1 + i;
int cY = y - 1 + j;
if (cX > 0 && cY > 0 && cX < width && cY < height && matVal != null)
{
if (!(PixelHelper.IsBlack(context, cX, cY) == matVal))
{
exaclyMatch = false;
goto ExitLoop;
}
}
}
}
ExitLoop:
if (exaclyMatch)
{
PixelHelper.SetBlack(newcontext, x, y);
}
else
{
PixelHelper.SetWhite(newcontext, x, y);
}
}
}
}
}
return(newImage);
}