Haodong Yuan Yudong Zhang Shengyin Fan Xue Li Jian Wang Object Scan Context: Object-centric Spatial Descriptor for Place Recognition within 3D Point Cloud Map. 2022 abs/2206.03062 CoRR https://doi.org/10.48550/arXiv.2206.03062 db/journals/corr/corr2206.html#abs-2206-03062