Exemple #1
0
        private static List <PointCluster> FindClusters(LazerSpot spotParams,
                                                        byte[] rgbValues, int w, int h, int stride)
        {
            var             clusters = new List <ScanCluster>();
            List <ScanLine> curLines = null;

            for (var y = 0; y < h; y++)
            {
                ScanLine curLine = null;
                curLines = new List <ScanLine>();

                for (var x = 0; x < w; x++)
                {
                    var ind   = x * 3 + y * stride;
                    var red   = rgbValues[ind];
                    var green = rgbValues[ind + 1];
                    var blue  = rgbValues[ind + 2];
                    var delta = (red - spotParams.patRed) * (red - spotParams.patRed) + (green - spotParams.patGreen) * (green - spotParams.patGreen) +
                                (blue - spotParams.patBlue) * (blue - spotParams.patBlue);
                    var isIn = delta < spotParams.squareDev;
                    if (isIn)
                    {
                        if (curLine == null)
                        {
                            curLine = new ScanLine {
                                y = y, scans = new List <Point> {
                                    new Point(x, x)
                                }
                            }
                        }
                        ;
                        else
                        {
                            curLine.scans[0] = new Point(curLine.scans[0].X, x);
                        }
                    }
                    else
                    if (curLine != null)
                    {
                        curLines.Add(curLine);
                        curLine = null;
                    }
                }
                if (curLine != null)
                {
                    curLines.Add(curLine);
                }
                if (curLines.Count == 0)
                {
                    continue;
                }
                MergeClusters(curLines, clusters);
            }
            if (curLines != null && curLines.Count > 0)
            {
                MergeClusters(curLines, clusters);
            }
            return(clusters.Select(c => c.ToPointCluster()).ToList());
        }
Exemple #2
0
        public static List <PointCluster> FindClusters(Bitmap bmp,
                                                       LazerSpot spotParams)
        {
            var rect    = new Rectangle(0, 0, bmp.Width, bmp.Height);
            var bmpData =
                bmp.LockBits(rect, ImageLockMode.ReadWrite,
                             bmp.PixelFormat);

            try
            {
                IntPtr ptr       = bmpData.Scan0;
                int    bytes     = Math.Abs(bmpData.Stride) * bmp.Height;
                var    rgbValues = new byte[bytes];
                System.Runtime.InteropServices.Marshal.Copy(ptr, rgbValues, 0, bytes);
                return(FindClusters(spotParams, rgbValues,
                                    bmp.Width, bmp.Height, bmpData.Stride));
            }
            finally
            {
                bmp.UnlockBits(bmpData);
            }
        }