中文说明：基于水头算法的图像分割。此代码读取图像并使用HSD算法进行图像分割。该代码同时进行彩色图像和灰度图像分割。
English Description：
Image segmentation using watershead algo. This code reads the image and do the image segmentation using the watershsd algorithm. The code does both colored image and a grayscale image segmentation.