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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。
For the linear CCD image, the matching direction of the MVLL algorithm is studied, and the conclusion is drawn that the matching direction, ie the connection between the bottom of the building and the corresponding roof, is approximately straight in the matching process. This paper analyzes the matching difficulty that the surface rupture features in the MVLL algorithm are usually matched to the house, improves the adaptive adjustment algorithm of related parameters and gives the flow of adaptive window change algorithm. The fracture feature matching experiments of two groups of ADS40 line images show that the surface fracture characteristics can be successfully matched after the adaptive window changes, and the MVLL algorithm’s self-adaptability is enhanced.