基于3D Zernike矩的快速地形匹配算法  

A fast terrain matching algorithm based on 3D Zernike moment

作　　者：王可东[1] 周俊杰 WANG Kedong;ZHOU Junjie(School of Astronautics,Beihang University,Beijing 100191,China)

机构地区：[1]北京航空航天大学宇航学院,北京100191

出　　处：《全球定位系统》2023年第6期58-66,共9页Gnss World of China

基　　金：国家自然科学基金(62173011)。

摘　　要：针对当前基于3D Zernike矩的地形匹配算法存在计算量大、实时性差的问题,通过分析3D Zernike矩的计算过程和构成地形特征向量的奇偶阶描述子的性能,提出了适用于地形匹配的3D Zernike矩快速计算方法和只使用奇数阶描述子构成特征向量的匹配方式.仿真实验表明:本文所提快速算法不仅能大幅降低计算量,还提高了匹配精度.In view of the current terrain matching algorithm based on 3D Zernike moment,which is computationally heavy and has poor real-time performance,this paper proposes a fast calculation method of 3D Zernike moment for terrain matching and a matching method that only uses odd-order descriptors to form feature vectors.The forming of method is based on the analysis of the computational process of 3D Zernike moments and the performance of odd-order descriptors.The simulation results show that the fast algorithm proposed in this paper can not only significantly reduce the amount of computation,but also improve the matching accuracy.

关 键 词：3D Zernike矩 地形匹配 快速算法 奇数阶描述子 偶数阶描述子 

分 类 号：P228.4[天文地球—大地测量学与测量工程] P249.32[天文地球—测绘科学与技术]