public void Initialize(FastBitmap img)
{
_r = new Random();
img.LockBits();
_height = img.Height;
_width = img.Width;
int capacity = _width * _height;
_pixels = new Pixel[capacity];
int n = 0;
for (int j = 0; j < _height; j++)
{
for (int i = 0 ; i < _width; i++)
{
List<byte> samples = new List<byte>();
samples.Add(img[i,j]);
byte[] randomPixels = GetRandomGreyPixels(img, i, j);
samples.AddRange(randomPixels);
_pixels[n] = new Pixel(samples.ToArray());
n++;
}
}
img.UnlockBits();
}
public byte[] GetMask(FastBitmap img)
{
byte[] mask = new byte[_height * _width];
int n = 0;
for (int j = 0; j < _height; j++)
{
for (int i = 0; i < _width; i++)
{
byte pixel_data = img[i,j];
if (Compare(pixel_data, _pixels[n]) == 1)
{
mask[n] = BackgroundByte;
UpdateModel(pixel_data, i,j);
}
else
{
mask[n] = pixel_data;
}
n++;
}
}
return mask;
}
private byte[] GetRandomGreyPixels(FastBitmap img, int x, int y)
{
byte[] result = new byte[NumberOfSamples - 1];
for (int i = 0; i < NumberOfSamples - 1; i++ )
{
GetCoordinate(ref x, ref y);
result[i] = img[x, y];
}
return result;
}