航天器工程2019，Vol.28Issue(1)：48-54,7.DOI:10.3969/j.issn.1673-8748.2019.01.007
小天体探测器着陆图像匹配改进算法
Improved Algorithm for Landing Image Matching of Small Celestial Body Probe
摘要
Abstract
Aiming at the problems of large amount of data and limited storage space in landing im-age matching information of small celestial body probe,an algorithm based on improved BRISK and RANSAC is proposed.Firstly,scale estimation and scale space are introduced in the Harris corner detection algorithm.In the stage of feature descriptor,a sampling point selection strategy to reduce correlation is proposed to reduce the computational complexity.Under the influence of image rotation,light intensity,Gauss noise and scale factor,the matching results of improved al-gorithm and the classical algorithm based on BRISK are compared.The analysis results show that the improved algorithm can reduce the computational complexity and storage space.With robust-ness under certain disturbances,it can provide effective landmark information for subsequent vis-ual navigation.关键词
小天体探测器/着陆图像匹配/改进的BRISK算法/改进的RANSAC算法Key words
small celestial body probe/landing image matching/improved BRISK algorithm/im-proved RANSAC algorithm分类
航空航天引用本文复制引用
冀红霞,宗红..小天体探测器着陆图像匹配改进算法[J].航天器工程,2019,28(1):48-54,7.基金项目
国家自然科学基金(61673057) （61673057）
