❔ Check pixel intensity along a line in image

        private void DrawProfileLane()
        {
            // load image and convert to grayscale
            Image<Bgr, byte> image = new Image<Bgr, byte>("path/to/image.jpg");
            Image<Gray, byte> grayImage = image.Convert<Gray, byte>();

            // check that both points are defined
            if (_firstPoint == null || _secondPoint == null)
            {
                return;
            }

            // define line between two points
            Point firstPoint = _firstPoint.Value;
            Point secondPoint = _secondPoint.Value;
            LineSegment2D line = new LineSegment2D(firstPoint, secondPoint);
            float dx = line.Direction.X;
            float dy = line.Direction.Y;
            double length = line.Length;

            // get pixel intensity values along the line using a parallel for loop
            int[] intensities = new int[(int)length];
            Parallel.For(0, (int)length, i =>
            {
                Point pointOnLine = new Point((int)(firstPoint.X + i * dx / length), (int)(firstPoint.Y + i * dy / length));
                intensities[i] = grayImage.Data[(int) pointOnLine.Y, (int) pointOnLine.X, 0];
            });

            // create plot and add data
            double[] intensitiesDouble = intensities.Select(x => (double)x).ToArray();
            WpfPlot plot = new WpfPlot();
            plot.Plot.AddSignal(intensitiesDouble);

            // create and show window
            ProfileLaneWindow profileLaneWindow = new ProfileLaneWindow
            {
                Title = $"Profile Lane Plot of {Title}",
                ProfileLanePlot = plot,
            };
            profileLaneWindow.Show();
        }

LineSegment2D line = new LineSegment2D(firstPoint, secondPoint);