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Fast and deterministic (3+1)DOF point set registration with gravity prior
Li, Xinyi1; Liu, Yinlong2; Xia, Yan3; Lakshminarasimhan, Venkatnarayanan1; Cao, Hu1; Zhang, Feihu4; Stilla, Uwe3; Knoll, Alois1
2023-04-12
Source PublicationISPRS Journal of Photogrammetry and Remote Sensing
ISSN0924-2716
Volume199Pages:118-132
Abstract

Point set registration is the technology used to estimate the spatial transformation between two LiDAR scans, which is challenging in the presence of outlier correspondences and noise. Our focus is on 4 degrees of freedom (DOF) point set registration, in which 1DOF rotation and 3DOF translation need to be estimated. It is commonly found in practical scenarios, such as arbitrarily mobile robots equipped with an inertial measurement unit (IMU), terrestrial LiDAR scanners, or planar moving vehicles in urban environments. Recently, many solutions have leveraged branch and bound (BnB) in global and deterministic approaches to solve the registration problem with performance guarantees. However, BnB-based methods are usually time-consuming since their convergence speed is exponential to the dimensionality of the solution domain, and existing methods estimate these 4DOF simultaneously. Our key idea is to speed up BnB-based methods by decoupling the joint pose into separate translation and rotation with the aid of known gravity directions. This effectively reduces the search domain to 3DOF+1DOF, thereby enhancing algorithm efficiency. Specifically, we propose a novel BnB-based consensus maximization method for a fast 3DOF translation search and derive the specific lower and upper bound functions. We then propose an efficient global voting method for estimating the rotation with 1DOF. To demonstrate the superiority of our proposed method, we conduct extensive experiments on both synthetic and real-world datasets. The experimental results show that (1) our proposed method is more robust against outliers and noise than several existing methods and far faster than the existing BnB-based 4DOF method by almost an order of magnitude, (2) our proposed method is robust against the biases in gravity directions, such that the general error of the IMU is acceptable, and (3) thanks to its significant robustness, our proposed method can solve the challenging problem of simultaneous pose and correspondence registration (SPCR). Moreover, the proposed approach is also more robust and accurate than several SPCR benchmark methods. Code is available at https://github.com/Xinyi-tum/Fast-and-Deterministic-Registration.

KeywordBranch And Bound Consensus Maximization Correspondence-based Registration Gravity Direction Point Set Registration Simultaneous Pose And Correspondence Registration
DOI10.1016/j.isprsjprs.2023.03.022
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaPhysical Geography ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS IDWOS:000984509400001
PublisherELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
Scopus ID2-s2.0-85152136619
Fulltext Access
Citation statistics
Document TypeJournal article
CollectionTHE STATE KEY LABORATORY OF INTERNET OF THINGS FOR SMART CITY (UNIVERSITY OF MACAU)
Corresponding AuthorLiu, Yinlong
Affiliation1.Chair of Robotics, Artificial Intelligence and Real-time Systems, TUM School of Computation, Information and Technology, Technical University of Munich, Munich, 85748, Germany
2.State Key Laboratory of Internet of Things for Smart City (SKL-IOTSC), University of Macau, 999078, China
3.Photogrammetry and Remote Sensing, TUM School of Engineering and Design, Technical University of Munich, Munich, 80333, Germany
4.School of Marine Science and Technology, Northwestern Polytechnical University, Xian, 710072, China
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Li, Xinyi,Liu, Yinlong,Xia, Yan,et al. Fast and deterministic (3+1)DOF point set registration with gravity prior[J]. ISPRS Journal of Photogrammetry and Remote Sensing, 2023, 199, 118-132.
APA Li, Xinyi., Liu, Yinlong., Xia, Yan., Lakshminarasimhan, Venkatnarayanan., Cao, Hu., Zhang, Feihu., Stilla, Uwe., & Knoll, Alois (2023). Fast and deterministic (3+1)DOF point set registration with gravity prior. ISPRS Journal of Photogrammetry and Remote Sensing, 199, 118-132.
MLA Li, Xinyi,et al."Fast and deterministic (3+1)DOF point set registration with gravity prior".ISPRS Journal of Photogrammetry and Remote Sensing 199(2023):118-132.
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