AcoustID.Chromaprint.IntegralImage.Transform C# (CSharp) Метод

        private void Transform()
        {
            int num_rows = m_image.Rows;
            int num_columns = m_image.Columns;

            double[] data = m_image.Data;

            int current = 1;
            int last = 0;

            for (int m = 1; m < num_columns; m++)
            {
                // First column - add value on top
                data[current] = data[current] + data[current - 1];
                ++current;
            }
            for (int n = 1; n < num_rows; n++)
            {
                // First row - add value on left
                data[current] = data[current] + data[last];
                ++current;
                ++last;
                // Add values on left, up and up-left
                for (int m = 1; m < num_columns; m++)
                {
                    data[current] = data[current] + data[current - 1] + data[last] - data[last - 1];
                    ++current;
                    ++last;
                }
            }
        }
    }