public static MatrixData DownScale(this MatrixData input, int factor, bool favorBrightPx = true)
{
MatrixData output = new MatrixData(input.Height() / factor, input.Width() / factor);
for (int r = 0; r < output.NumberOfRows; r++)
{
for (int c = 0; c < output.NumberOfColumns; c++)
{
MatrixData inpx = new MatrixData(input, r * factor, c * factor, factor, factor);
output[r, c] = (favorBrightPx)? (inpx.MeanPixel() + inpx.Percentile(25)) / 2: inpx.MeanPixel();
}
}
return(output);
}
public static MatrixData Convert18To6Px(this MatrixData input, bool favorBrightPx = true)
{
MatrixData output = new MatrixData(6, 6);
int outR = 0;
int outC = 0;
for (int r = 0; r < input.Height(); r += 3)
{
outC = 0;
for (int c = 0; c < input.Width(); c += 3)
{
MatrixData m = input.CopyData(r, c, 3, 3);
output[outR, outC] = (favorBrightPx)? (m.MeanPixel() + m.Percentile(25)) / 2 : m.MeanPixel();
outC++;
}
outR++;
}
return(output);
}