摘要
利用谱方法进行点模式匹配的主要问题是对点的位置噪声比较敏感。为了提高谱方法对噪声的鲁棒性,该文在表示矩阵的构建过程中采用高斯加权的近邻矩阵对要匹配的点模式进行描述,提出一种新的符号校正方法,利用点的属性信息对根据谱方法得到的匹配度量进行加权。仿真实验表明,在噪声情况下的点模式匹配应用中采用改进的谱方法可以获得较高的正确匹配率。
When the point pattern matching problem is resolved with spectral method, one of the challenges which limit the method is that it is very sensitive to the measurement noise of the points＇ position. This paper improves the robustness of the spectral method from three aspects. It adopts the proximity matrix which takes the Gaussian weighted Euclidean distances between any two points within the same point pattern as its elements. A new sign correction method is proposed. The matching metric derived from the spectral method is further weighted by the points＇ attribute information. Simulation experiments show that when the improved spectral method is applied to the point pattern matching problem on noisy conditions it can achieve a high correct matching ratio.
出处
《计算机工程》
CAS
CSCD
北大核心
2009年第2期10-12,17,共4页
Computer Engineering
基金
国家部委"十一五"基金资助项目
关键词
点模式匹配
谱方法
表示矩阵
符号校正
匹配度量
point pattern matching
spectral method
representation matrix
sign correction
matching metric
