摘要
针对线阵CCD影像,研究了MVLL算法的匹配走向,得出了匹配走向即建筑物底部至对应屋顶的连线在匹配过程中为近似直线的结论。分析了MVLL算法中地表断裂特征通常匹配至屋底的匹配难点,改进了相关参数自适应调整算法,给出了自适应窗口变化算法的流程。两组ADS40线阵影像的断裂特征匹配实验表明,经过自适应窗口变化后,地表断裂特征能够成功匹配,MVLL算法的自适应性增强。
Matching line of MVLL algorithm was investigated for line-array CCD images,and it can be concluded that the matching line was the line between top feature and its corresponding bottom feature and can be regarded as a straight line.For MVLL algorithms,the difficulties of discontinuity feature that usually matched to the bottom were analyzed,and the algorithm of self-adaptive adjustment of correlation parameters was improved.After the process of self-adaptive window extension algorithm was given.The matching experiments were done on discontinuity features using two ADS40 line-array image datasets.The results show that,after applying the self-adaptive window extension algorithm,discontinuity features could be successfully matched and the self-adaptive function of MVLL algorithm was thus enhanced.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2011年第2期199-203,共5页
Geomatics and Information Science of Wuhan University
基金
国家863计划资助项目(2006AA12Z154)
国家自然科学基金资助项目(40901179)
江西省数字国土重点实验室开放研究基金资助项目(DLLJ201001
DLLJ201003)
关键词
MVLL
匹配走向
断裂特征
窗口变化
相关系数
MVLL
matching line
discontinuity feature
window extension
correlation coefficients
