Abstract: People use all kinds of methods to express the image boundary, most of all, the widespread method is chain code technology, the chain code technology to express line or the image pattern, may use few data to storage many information, but on the hexagonal grid, the pixels distribute more reasonable and compact, according to the two superiority, this article supposed a method to apply the chain code on the hexagonal grid, proposed one new chain code method, enables the chain code technology to obtain a better application.

Key words: new chain code, hexagonal grid, Freeman chain code, compression chain

摘要： 我们使用各种方法表示图像边界，其中使用最广泛为链码技术。使用链码技术表示图像的线条或边界，可以用较少的数据存储较多的信息，而六角网格显示器象素点的分布更加合理和紧凑，根据二者的优点，本文将链码技术应用于六角网格中，提出一种新链码编码方法，使得链码技术得到更好的应用。

关键词: 新链码, 六角网格, Freeman链码, 压缩链码