arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.14579cs.CVcs.RO
收藏

基于虚拟对应的端到端三维点云配准算法

End-to-End 3D Point Cloud Learning for Registration Task Using Virtual Correspondences

Zhijian Qiao, Huanshu Wei, Zhe Liu, Chuanzhe Suo, Hesheng Wang

摘要:

三维点云配准仍然是一个非常具有挑战性的课题,因为很难找到两个点云之间的刚性转换部分对应,它甚至更难在没有任何初始估计信息。在本文中,我们提出了一种基于端到端深度学习的方法来解决点云配准问题。首先,引入改进的LPD-Net来提取特征,并将其与图网络进行聚合。其次,利用自注意力机制增强点云的结构信息,设计交叉注意力机制增强两个输入点云之间的对应信息。在此基础上,通过软指针方法生成虚拟对应点,最后通过奇异值分解方法解决点云配准问题。在ModelNet 40数据集上的实验结果验证了该方法在点云配准中的有效性,在KITTI数据集上的实验结果验证了该方法的有效性

英文摘要:

3D Point cloud registration is still a very challenging topic due to the difficulty in finding the rigid transformation between two point clouds with partial correspondences, and it's even harder in the absence of any initial estimation information. In this paper, we present an end-to-end deep-learning based approach to resolve the point cloud registration problem. Firstly, the revised LPD-Net is introduced to extract features and aggregate them with the graph network. Secondly, the self-attention mechanism is utilized to enhance the structure information in the point cloud and the cross-attention mechanism is designed to enhance the corresponding information between the two input point clouds. Based on which, the virtual corresponding points can be generated by a soft pointer based method, and finally, the point cloud registration problem can be solved by implementing the SVD method. Comparison results in ModelNet40 dataset validate that the proposed approach reaches the state-of-the-art in point cloud registration tasks and experiment resutls in KITTI dataset validate the effectiveness of the proposed approach in real applications.Our source code is available at \url{https://github.com/qiaozhijian/VCR-Net.git}

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。

↑