用四邻域法和八邻域法，通过象素的颜色，找出图像的边界。

二值图像的四邻域，八邻域法 以及标号法清除散落点

QT平台实现的区域生长算法，非常基础的东西，一百行代码左右，基于jpg图片生长，有原图片和运行结果，八邻域算法-Region growing algorithm QT platform and very basic things, about a hundred lines of code, based on the growth of jpg image with the original image and the operating results, eight neighborhood