Analytical least-squares solution for 3D lidar-camera calibration

Faraz M. Mirzaei, Dimitrios G. Kottas, Stergios I. Roumeliotis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

This paper addresses the problem of estimating the intrinsic parameters of the 3D Velodyne lidar while at the same time computing its extrinsic calibration with respect to a rigidly connected camera. Existing approaches to solve this nonlinear estimation problem are based on iterative minimization of nonlinear cost functions. In such cases, the accuracy of the resulting solution hinges on the availability of a precise initial estimate, which is often not available. In order to address this issue, we divide the problem into two least-squares sub-problems, and analytically solve each one to determine a precise initial estimate for the unknown parameters. We further increase the accuracy of these initial estimates by iteratively minimizing a batch nonlinear least-squares cost function. In addition, we provide the minimal observability conditions, under which, it is possible to accurately estimate the unknown parameters. Experimental results consisting of photorealistic 3D reconstruction of indoor and outdoor scenes are used to assess the validity of our approach.

Original languageEnglish (US)
Title of host publicationRobotics Research - The 15th International Symposium ISRR
EditorsHenrik I. Christensen, Oussama Khatib
PublisherSpringer Verlag
Pages183-200
Number of pages18
ISBN (Print)9783319293622
DOIs
StatePublished - 2017
Event15th International Symposium of Robotics Research, 2011 - Flagstaff, United States
Duration: Dec 9 2011Dec 12 2011

Publication series

NameSpringer Tracts in Advanced Robotics
Volume100
ISSN (Print)1610-7438
ISSN (Electronic)1610-742X

Other

Other15th International Symposium of Robotics Research, 2011
CountryUnited States
CityFlagstaff
Period12/9/1112/12/11

Bibliographical note

Funding Information:
This work was supported by the University of Minnesota (DTC), and the National Science Foundation (IIS-0643680, National Science Foundation IIS-0811946, National Science Foundation IIS-0835637).

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