private ColorChannel ReduceChannel(ColorChannel channel, int factor)
{
int reducedHeight = channel.GetHeight() / factor;
int reducedWidth = channel.GetWidth() / factor;
ColorChannel result = new ColorChannel(reducedWidth, reducedHeight);
for (int y = 0; y < reducedHeight; y++)
{
for (int x = 0; x < reducedWidth; x++)
{
int sum = 0;
for (int blockY = y * factor; blockY < y * factor + factor; blockY++)
{
for (int blockX = x * factor; blockX < x * factor + factor; blockX++)
{
sum += (int)channel.GetPixel(blockX, blockY);
}
}
result.SetPixel(x, y, (int)Math.Round(sum / (double)(factor * factor)));
}
}
return(result);
}
private RGBImageBuilder(ColorChannel red)
{
_imageWidth = red.GetWidth();
_imageHeight = red.GetHeight();
_red = new ColorChannel(GetRealWidth(), GetRealHeight());
_green = new ColorChannel(GetRealWidth(), GetRealHeight());
_blue = new ColorChannel(GetRealWidth(), GetRealHeight());
for (int i = 0; i < red.GetHeight(); i++)
{
for (int j = 0; j < red.GetWidth(); j++)
{
_red.SetPixel(j, i, red.GetPixel(j, i));
_green.SetPixel(j, i, red.GetPixel(j, i));
_blue.SetPixel(j, i, red.GetPixel(j, i));
}
}
}