private static int[][] LineStructuralElementGenerator(int angle, int structuralElementSize)
        {
            angle %= 180;
            var above90Deg = angle > 90;
            angle %= 91;

            var alpha = angle * Math.PI / 180;
            var columns = (int) Math.Ceiling(structuralElementSize * Math.Cos(alpha)) + 1;
            var rows = (int) Math.Ceiling(structuralElementSize * Math.Sin(alpha)) + 1;

            columns -= columns % 2 == 0 ? 1 : 0;
            rows -= rows % 2 == 0 ? 1 : 0;

            var structuralElement = new int[rows][];
            for (var i = 0; i < rows; i++) structuralElement[i] = new int[columns];

            var lineGradient = ((double) rows - 1) / ((double) columns - 1);

            if (!double.IsInfinity(lineGradient))
                for (var i = 0; i < columns; i++)
                {
                    var y = rows - lineGradient * i;
                    structuralElement[(int) y - 1][i] = 1;
                }
            else
                for (var i = 0; i < rows; i++)
                    structuralElement[i][0] = 1;

            for (var i = 0; i < rows; i++)
            {
                var correctLine = false;

                for (var j = 0; j < columns; j++)
                    if (structuralElement[i][j] == 1)
                        correctLine = true;

                if (correctLine) continue;
                var correctColumn = 0;

                if (i <= rows / 2)
                    for (var j = 0; j < columns; j++)
                    {
                        if (structuralElement[i - 1][j] != 1) continue;
                        correctColumn = j;
                        break;
                    }
                else
                    for (var j = 0; j < columns; j++)
                    {
                        if (structuralElement[i + 1][j] != 1) continue;
                        correctColumn = j;
                        break;
                    }

                structuralElement[i][correctColumn] = 1;
            }

            if (!above90Deg) return structuralElement;

            for (var i = 0; i < rows; i++)
            for (var j = 0; j < columns / 2; j++)
            {
                var tmp = structuralElement[i][j];
                structuralElement[i][j] = structuralElement[i][columns - 1 - j];
                structuralElement[i][columns - 1 - j] = tmp;
            }

            return structuralElement;
        }