无控制DEM表面差异探测研究Research on DEM surface deformation detection without control points
张同刚;岑敏仪;吴兴华;
摘要(Abstract)：
本文提出了一个新的无控制DEM差异探测算法。它可以将不同时期获取的DEM纳入到统一坐标系中,这样就可以根据匹配后的DEM来定量探测地表变化情况。该方法通过差分模型考虑了观测量的数值及其相互关系。与目前差异探测能力最强的LMS-LZD方法相比,新方法具有更好的差异能力和更高的匹配精度。普歪沟泥石流沟多时相DEM差异探测实例验证了新方法的优越性。
关键词(KeyWords)： 三维匹配;差异探测;差分模型;最小高程差算法;数字高程模型
基金项目(Foundation): 国家自然科学基金资助项目(40271092);; 西南交通大学博士生创新基金
作者(Authors): 张同刚;岑敏仪;吴兴华;
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