Пример #1
0
        public static Bitmap CyclicPatternsInLines(List <Point> edgePoints, List <RawLine> rawLines, RecognitionOptions options)
        {
            rawLines = rawLines.OrderBy(l => l.yInt).ToList();

            List <Bitmap> images = new List <Bitmap>();

            foreach (var rawLine in rawLines)
            {
                bool[] linePoints = new bool[options.imageWidth];
                foreach (var pt in edgePoints)
                {
                    if (Math.Abs(rawLine.yInt - (pt.Y - pt.X * rawLine.k)) < 2)
                    {
                        linePoints[pt.X] = true;
                    }
                }
                var lines = SegmentDetector.GetSegments(linePoints, rawLine);
                if (lines.Count > 0)
                {
                    images.Add(CyclicPatternsImage(linePoints, lines.First().p1.X, lines.Last().p2.X));
                }
            }

            return(ImageUtil.VerticalConcat(images));
        }
Пример #2
0
        /*
         * Forms solid lines from set of raw lines.
         * Discards lines that have cyclic patterns in them.
         */
        public static List <Line> FilterLines(List <Point> edgePoints, List <RawLine> rawLines, RecognitionOptions options)
        {
            List <Line> lines = new List <Line>();

            foreach (var rawLine in rawLines)
            {
                // convert rawLine to list of black/white pixels
                bool[] linePoints = new bool[options.imageWidth];
                foreach (var pt in edgePoints)
                {
                    if (Math.Abs(rawLine.yInt - (pt.Y - pt.X * rawLine.k)) < 2)
                    {
                        linePoints[pt.X] = true;
                    }
                }

                var segments = SegmentDetector.GetSegments(linePoints, rawLine);

                if (segments.Count > 0)
                {
                    Line solidLine = SegmentDetector.GetSolidLine(segments);

                    if (!options.detectCyclicPatterns ||
                        !CyclicPatternDetector.HasCyclicPatterns(linePoints, solidLine.p1.X, solidLine.p2.X, options))
                    {
                        lines.Add(solidLine);
                    }
                }
            }

            return(lines);
        }