有关连通域的提取，以肺部图片作为示例，使用bwlabel函数，非常方便-Connected domain on the extraction of the lung images as an example, the use of bwlabel function, very convenient

肺部CT图片分割提取出肺实质：迭代法获取灰度阈值；二值化图像；分区使用纯M语言编写，各个环节都是自己编程解决，没有用Matlab内置的函数，方便改成其他语言代码。-Lung CT image segmentation to extract the lung parenchyma: iterative methods for grayscale threshold binary image partition using pure M language, are all aspects