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基于CUDA的海量点云数据kNN查询算法 被引量:3

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摘要 通过激光扫描技术获得的点云数据量十分巨大,如何利用k最近邻域(k-nearest neighbors,kNN)查询重建海量点云中各采样点间的拓扑关系,对点云数据的后续处理至关重要。在深入研究GPU编程技术的基础上,将GPU通用计算引入到点云数据的kNN查询问题中,提出一种通过CUDA实现的基于外存的双层查询结构。试验结果表明,该方法与传统算法相比在查询效率上有较大提升,最大增幅可达53.8%。
作者 杨铭 陈建峰
出处 《测绘通报》 CSCD 北大核心 2012年第S1期394-398,共5页 Bulletin of Surveying and Mapping
关键词 点云 KNN查询 GPU CUDA
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参考文献6

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