private static int bfsSearch(Image <Gray, Byte> img, bool[,] vi, ConnectLevel conn, Point start, int color, int padding)
        {
            if (vi[start.Y, start.X])
            {
                return(0);
            }

            var domain = new ConnectDomain();

            Queue <Point> queue = new Queue <Point>();

            queue.Enqueue(start);
            var dir = DirVec;

            while (queue.Count > 0)
            {
                Point p = queue.Dequeue();
                if (vi[p.Y, p.X])
                {
                    continue;
                }
                vi[p.Y, p.X] = true;
                domain.Add(p);
                for (int i = 0; i < connect; ++i)
                {
                    int ny = p.Y + dir[i, 1], nx = p.X + dir[i, 0];
                    if (ny < padding || ny >= img.Height - padding)
                    {
                        continue;
                    }
                    if (nx < padding || nx >= img.Width - padding)
                    {
                        continue;
                    }

                    if (vi[ny, nx])
                    {
                        continue;             // 提前判断一下,好选择加入哪个集合
                    }
                    Point np = new Point(nx, ny);
                    if (img[ny, nx].Intensity >= color)
                    {
                        queue.Enqueue(np);
                    }
                    else
                    {
                        conn.NotIn.Add(np);
                    }
                }
            }
            conn.AddDomain(domain);
            return(domain.Area);
        }
 public void AddDomain(ConnectDomain domain)
 {
     Domains.Add(domain);
 }
        private static int bfsSearch(Image<Gray, Byte> img, bool[,] vi, ConnectLevel conn, Point start, int color, int padding)
        {
            if (vi[start.Y, start.X]) return 0;

            var domain = new ConnectDomain();

            Queue<Point> queue = new Queue<Point>();
            queue.Enqueue(start);
            var dir = DirVec;
            while (queue.Count > 0) {
                Point p = queue.Dequeue();
                if (vi[p.Y, p.X]) continue;
                vi[p.Y, p.X] = true;
                domain.Add(p);
                for (int i = 0; i < connect; ++i) {
                    int ny = p.Y + dir[i, 1], nx = p.X + dir[i, 0];
                    if (ny < padding || ny >= img.Height - padding) continue;
                    if (nx < padding || nx >= img.Width - padding) continue;

                    if (vi[ny, nx]) continue; // 提前判断一下,好选择加入哪个集合

                    Point np = new Point(nx, ny);
                    if (img[ny, nx].Intensity >= color) {
                        queue.Enqueue(np);
                    } else {
                        conn.NotIn.Add(np);
                    }
                }
            }
            conn.AddDomain(domain);
            return domain.Area;
        }
 public void AddDomain(ConnectDomain domain)
 {
     Domains.Add(domain);
 }