linedetection

public bool match()
        {
            IplImage image = new IplImage(ImagePath, LoadMode.Color);

            //Get ROI
            IplImage image_roi = ToolboxImage.GetROIImage(image, _ROI);
            IplImage image_draw = ToolboxImage.GetROIImage(image, _ROI);

            if (Display)
            {
                Cv.NamedWindow("1");
                Cv.ShowImage("1", image_roi);
                Cv.WaitKey();
            }
            //Filtering colors
            CvScalar HSV = ToolboxImage.RGBtoHSV(LineColor);
            image_roi = ToolboxImage.FilterImageColor(image_roi, HSV);
            if (Display)
            {
                Cv.NamedWindow("2");
                Cv.ShowImage("2", image_roi);
                Cv.WaitKey();
            }

            //Storage
            CvMemStorage storage = new CvMemStorage();

            //perform transformation
            int lineSplit = 0;
            if (Dashed)
                lineSplit = 10;

            CvSeq lines = image_roi.HoughLines2(storage, HoughLinesMethod.Probabilistic, 1, Math.PI / 180, 30, Length, lineSplit);

            for (int i = 0; i < lines.Total; i++)
            {
                //Get first line
                CvLineSegmentPoint elem = lines.GetSeqElem<CvLineSegmentPoint>(i).Value;

                //Convert to cartesian coordinates
                CvPoint p1 = CoorConverter(elem.P1, CoordinateConversion.PIXELCART);
                CvPoint p2 = CoorConverter(elem.P2, CoordinateConversion.PIXELCART);

                //Get angle
                double angle = Math.Atan2(p2.Y - p1.Y, p2.X - p1.X) * 180 / Math.PI;
                if (angle < 0)
                    angle = angle + 360;

                //If angle is in allowed area
                if (angle < Angle + 5 && angle > Angle - 5)
                {
                    image_draw.Line(elem.P1, elem.P2, CvColor.Red, 2, LineType.AntiAlias, 0);
                    matchFound++;
                    if (Display)
                    {
                        Cv.NamedWindow("Test" + 4 + i);
                        Cv.ShowImage("Test" + 4 + i, image_draw);
                        Cv.WaitKey();
                    }
                }
            }
            if (Display)
                Cv.DestroyAllWindows();

            if (matchFound == 1)
                return true;
            else
                return false;
        }