摘要
针对任意结构的识别问题 ,扩展了 Chen的定义 ,提出了对结构满足平移、缩放和旋转不变的一组结构矩公式 .针对该组结构矩的离散化计算需要进行烦琐的链码搜索过程的缺点 ,提出了计算该组结构矩的一种快速算法 ,简化了搜索过程并降低了计算误差 ,该方法通过对测试图的实验得到了验证 .
We extend Chen's methods to define structure moments, which are independent of position, scale and orientation. The formula of invariant moments we proposed can be applied to closed and unclosed structures. In a discrete image plane, chain codes are often used to represent structures, However the moment calculation based on chain codes is complex. We propose a fast algorithm to compute the structure moments. This algorithm also reduce calculation errors. Experiments shows that this fast algorithm performs well.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2000年第3期10-14,共5页
Journal of Beijing University of Posts and Telecommunications
基金
国家重点科技攻关资助项目! (ZX95 0 2 )
关键词
图像识别
快速算法
计算机视制
结构矩
image recognition
geometric shapes recognition
structure moment invariants
fast algorithm
