This paper presents a high-performance method for the k-nearest neighbourhood search. Starting from a point cloud, first the method carries out the space division by the typical cubic grid partition of the bounding box; then a new data structure is constructed. Based on these two previous steps, an efficient implementation of the k-nearest neighbourhood is proposed. The performance of the method here presented is compared with that of the kd-tree and bd-tree algorithms taken from the ANN library as regards the computing time for some benchmarking point clouds and artificially generated test cases. The results are analysed and critically discussed.
An efficient algorithm for the nearest neighbourhood search for point clouds
DI ANGELO, LUCA;
2011-01-01
Abstract
This paper presents a high-performance method for the k-nearest neighbourhood search. Starting from a point cloud, first the method carries out the space division by the typical cubic grid partition of the bounding box; then a new data structure is constructed. Based on these two previous steps, an efficient implementation of the k-nearest neighbourhood is proposed. The performance of the method here presented is compared with that of the kd-tree and bd-tree algorithms taken from the ANN library as regards the computing time for some benchmarking point clouds and artificially generated test cases. The results are analysed and critically discussed.Pubblicazioni consigliate
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