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- W2890354344 abstract "Modern 3D laser-range scanners have a high data rate, making online simultaneous localization and mapping (SLAM) computationally challenging. Recursive state estimation techniques are efficient but commit to a state estimate immediately after a new scan is made, which may lead to misalignments of measurements. We present a 3D SLAM approach that allows for refining alignments during online mapping. Our method is based on efficient local mapping and a hierarchical optimization back-end. Measurements of a 3D laser scanner are aggregated in local multiresolution maps by means of surfel-based registration. The local maps are used in a multi-level graph for allocentric mapping and localization. In order to incorporate corrections when refining the alignment, the individual 3D scans in the local map are modeled as a sub-graph and graph optimization is performed to account for drift and misalignments in the local maps. Furthermore, in each sub-graph, a continuous-time representation of the sensor trajectory allows to correct measurements between scan poses. We evaluate our approach in multiple experiments by showing qualitative results. Furthermore, we quantify the map quality by an entropy-based measure." @default.
- W2890354344 created "2018-09-27" @default.
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- W2890354344 date "2018-05-01" @default.
- W2890354344 modified "2023-10-06" @default.
- W2890354344 title "Efficient Continuous-Time SLAM for 3D Lidar-Based Online Mapping" @default.
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- W2890354344 doi "https://doi.org/10.1109/icra.2018.8461000" @default.
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