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Abstract
This paper presents an octree-based map building algorithm for mobile home-service robots. The robot is equipped with a time-of-flight camera, which produces point clouds of the environment surfaces. Given the successive input of point clouds, a 3D map is incrementally computed in real time. The map is accurate and memory-efficient because the octree nodes containing points on a plane are merged and represented simply by an index to the plane. The real-time performance is achieved largely due to the parallel processing capability of the many-core Graphics Processing Unit used for plane extraction.
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Acknowledgment
This research was supported by MKE, Korea under ITRC NIPA-2011-(C1090-1121-0008) and the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST)(No. 2009-0086684).