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用于无控制DEM匹配的LZD和ICP算法的比较

DOI: 10.11834/jig.200605118

Keywords: 无控制匹配,最小高差算法,最近点迭代算法,数字高程模型

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Abstract:

为了选择一种更适合数字高程模型匹配的算法,首先回顾了目前广泛使用的两种3维表面匹配算法--最小高差算法和最近点迭代算法的发展,并给出了二者共同的逻辑框架;然后从理论上对二者的差异进行了定性分析;最后通过试验进行了定量比较.试验结果表明:与ICP算法相比,LZD算法的计算效率高于前者约9倍.但其拉入范围略小,迭代速度也比ICP算法慢了约一倍,然而,如果表面姿态差异越小,则LZD算法迭代收敛就越快.因此,对于表面姿态差异较小的DEM匹配而言,LZD算法更加适合.

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