C#上的边缘检测

Question

我有这样的黑白图像(颜色覆盖是我的,可以删除): 我需要弄清楚所示手的边缘,我该怎么做？

我目前的算法:

        List<Point> edgePoints = new List<Point>();
        for (int x = 0; x < largest.Rectangle.Width && edgePoints.Count == 0; x++) {
            //top
            for (int y = 0; y < largest.Rectangle.Height - 3 && edgePoints.Count == 0; y++) {
                if (colorGrid[x, y].ToArgb() == Color.White.ToArgb() &&
                    colorGrid[x, y + 1].ToArgb() == Color.White.ToArgb() &&
                    colorGrid[x, y + 2].ToArgb() == Color.White.ToArgb() &&
                    colorGrid[x, y + 3].ToArgb() == Color.White.ToArgb()
                    ) {
                    edgePoints.Add(new Point(x, y));
                    //g.DrawLine(new System.Drawing.Pen(Color.Orange), new Point(largest.Rectangle.X + x, largest.Rectangle.Y + y), new Point(largest.Rectangle.X + x, largest.Rectangle.Y + y + 3));
                    break;
                }
            }
            //bottom
            for (int y = largest.Rectangle.Height - 1; y > 3 && edgePoints.Count == 0; y++) {
                if (colorGrid[x, y].ToArgb() == Color.White.ToArgb() &&
                    colorGrid[x, y - 1].ToArgb() == Color.White.ToArgb() &&
                    colorGrid[x, y - 2].ToArgb() == Color.White.ToArgb() &&
                    colorGrid[x, y - 3].ToArgb() == Color.White.ToArgb()
                    ) {
                    edgePoints.Add(new Point(x, y));
                    //g.DrawLine(new System.Drawing.Pen(Color.Orange), new Point(largest.Rectangle.X + x, largest.Rectangle.Y + y), new Point(largest.Rectangle.X + x, largest.Rectangle.Y + y + 3));
                    break;
                }
            }
        }

得到一个相当明确的轮廓,但如果和曲线在任何地方,那么边缘就没有被检测到.IE,如果我侧身握住我的手,我会得到顶部手指和底部手指的边缘,但就是这样.

我该怎么做才能纠正这个并获得真正的优势？

Answer 1

看看这样的项目:http://code.google.com/p/aforge/,它将帮助你很多,你不必重新发明轮子!