public static double median_power(Byte[] pixels, int x_pixel, int y_pixel, int pixelRadius, int width)
        {
            List<double> powers_list = new List<double>();

            //itterate on radius-run on x
            for (int x = x_pixel - pixelRadius; x <= x_pixel + pixelRadius; x++)
            {
                //if this pixels location out of bounds-don't try to add it to calculations
                if (x > image_size_x || x < 0) continue;

                //itterate on radius-run on y
                for (int y = y_pixel - pixelRadius; y <= y_pixel + pixelRadius; y++)
                {
                    //if this pixels location out of bounds-don't try to add it to calculations
                    if (y > image_size_y || y < 0) continue;

                    //index is the pixel's trio(RBG) location in the array
                    int index = ((y * width) + x) * 4;

                    Byte b = pixels[index + 0];
                    Byte g = pixels[index + 1];
                    Byte r = pixels[index + 2];

                    double power;
                    //for black pixel- give
                    if (r == 0 && g == 0 && b == 0) power = 0;
                    else power = ColorTranslator.RGB_array_power(r, g, b);

                    powers_list.Add(power);
                }
            }
            double median = powers_list.ElementAt((int)Math.Floor((double)powers_list.Count/2.0));
            return median;
        }