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arXiv 2008.11459cs.CVcs.RO
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基于语义图的三维点云位置识别

Semantic Graph Based Place Recognition for 3D Point Clouds

Institute of Cyber-Systems and Control, Zhejiang University(浙江大学工业控制研究所)

Xin Kong, Xuemeng Yang, Guangyao Zhai, Xiangrui Zhao, Xianfang Zeng, Mengmeng Wang, Yong Liu, Wanlong Li, Feng Wen

摘要:

由于难以生成对遮挡和视点变化具有鲁棒性的有效描述符,三维点云的位置识别仍然是一个悬而未决的问题。与大多数专注于提取原始点云的局部,全局和统计特征的现有方法不同,我们的方法旨在语义级别,可以在对环境变化的鲁棒性方面更胜一筹。受人类通过识别语义对象并捕捉它们之间关系来识别场景的观点的启发,本文提出了一种新的基于语义图的地点识别方法。首先,我们提出了一种新的语义图表示的点云场景,通过保留原始点云的语义和拓扑信息。因此,地点识别被建模为图匹配问题。然后设计了一个快速有效的图相似度网络来计算相似度。在KITTI数据集上的详尽评估表明,我们的方法对遮挡和视点变化具有鲁棒性,并且以较大的幅度优于最先进的方法。我们的代码可从以下网址获得:\url{https://github.com/kxhit/SG_PR}。

英文摘要:

Due to the difficulty in generating the effective descriptors which are robust to occlusion and viewpoint changes, place recognition for 3D point cloud remains an open issue. Unlike most of the existing methods that focus on extracting local, global, and statistical features of raw point clouds, our method aims at the semantic level that can be superior in terms of robustness to environmental changes. Inspired by the perspective of humans, who recognize scenes through identifying semantic objects and capturing their relations, this paper presents a novel semantic graph based approach for place recognition. First, we propose a novel semantic graph representation for the point cloud scenes by reserving the semantic and topological information of the raw point cloud. Thus, place recognition is modeled as a graph matching problem. Then we design a fast and effective graph similarity network to compute the similarity. Exhaustive evaluations on the KITTI dataset show that our approach is robust to the occlusion as well as viewpoint changes and outperforms the state-of-the-art methods with a large margin. Our code is available at: \url{https://github.com/kxhit/SG_PR}.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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