精心开发的爬虫，对于初学者来说很有用，请-Well-developed reptiles, very useful for beginners, please see

用matlab编写的边界跟踪算法，用到了freeman链码和爬虫法，可以有效的跟踪单个物体边界，适合于初学者。- Prepared using matlab boundary tracking algorithm uses a freeman chain code and reptiles method can effectively track a single object border

利用python爬取豆瓣相关图像，以方便数据分类、解析以及挖掘(Using Python to extract related images of watercress to facilitate data classification, analysis and mining)