摘要： 在数字图像处理领域，链码是一种极其有效的目标描述方式，基于链码描述的面积计算得到了广泛的应用。该文分析了现有的多种基于链码的面积计算方法，对它们在算法原理、速度和精度方面进行了分析和比较，并通过实验给出了适合小目标的面积计算方法。

关键词: 面积, 链码, 轮廓

Abstract: Chain code is very useful to object description in digital image, so area algorithms based on chain code are used widely. The paper analyzes and compares the chain codes based area algorithms from the algorithm principles, speed and precision, and gives the best algorithm for the small object.

Key words: area, chain code, contour

中图分类号: 

• TP391.4