Naslov
Bias Estimation and Calibration of a Pair of Laser Range Sensors

Autori
Jurić-Kavelj, Srećko ; Petrović, Ivan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
10th IFAC Symposium on Robot Control - SYROCO 2012 / Petrović, Ivan ; Korondi, Peter - : The International Federation of Automatic Control, 2012

ISBN
978-3-902823-11-3

Skup
10th IFAC Symposium on Robot Control

Mjesto i datum
Dubrovnik, Hrvatska, 05.09.2012. - 07.09.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Mobile robots and vehicles; Modeling and identification

Sažetak
Laser range sensors (LRS) are ubiquitous in mobile robotics. They are usually modeled as having statistical error only, despite some having systematic error (bias) documented. This paper deals with bias estimation for laser range sensors in order to produce better calibration for two LRS. Assuming both LRS sense in the same plane, we propose an algorithm to estimate position and orientation of the second laser in the coordinate frame of the first laser, or vice versa. In order to truly have corresponding points in two LRS scans, we propose a calibration target. We use cylindrical objects of known radius, placed in the field of view of both LRS, perpendicularly to the sensing plane. Centers of circles that result from the intersection of the sensing plane and cylindrical objects then become corresponding points. Our algorithm first estimates cylinder centers, together with their respective uncertainties, and then using those results produces Euclidean transform estimate, together with it’s respective uncertainty. The results of this algorithm can be used to gather very precise ground truth for people tracking applications with LRS. In case of occlusions, one has obvious benefits from two or more different viewpoints.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Računarstvo, Temeljne tehničke znanosti

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