PeRL STUDIES AUTONOMOUS NAVIGATION & MAPPING FOR MOBILE ROBOTS IN A PRIORI UNKNOWN ENVIRONMENTS.
Visually mapping the RMS Titanic: Conservative covariance estimates for SLAM information filters
Summary
Ryan M. Eustice, Hanumant Singh, John J. Leonard and Matthew R. Walter, Visually mapping the RMS Titanic: Conservative covariance estimates for SLAM information filters. International Journal of Robotics Research, 25(12):1223-1242, 2006.Abstract
This paper describes a vision-based, large-area, simultaneous localization and mapping (SLAM) algorithm that respects the low-overlap imagery constraints typical of underwater vehicles while exploiting the inertial sensor information that is routinely available on such platforms. We present a novel strategy for efficiently accessing and maintaining consistent covariance bounds within a SLAM information filter, thereby greatly increasing the reliability of data association. The technique is based upon solving a sparse system of linear equations coupled with the application of constant-time Kalman updates. The method is shown to produce consistent covariance estimates suitable for robot planning and data association. Real-world results are reported for a vision-based, six degree of freedom SLAM implementation using data from a recent survey of the wreck of the RMS Titanic.
Bibtex entry
@ARTICLE { reustice-2006c,
AUTHOR = { Ryan M. Eustice and Hanumant Singh and John J. Leonard and Matthew R. Walter },
TITLE = { Visually mapping the {RMS} {Titanic}: Conservative covariance estimates for {SLAM} information filters },
JOURNAL = { International Journal of Robotics Research },
YEAR = { 2006 },
VOLUME = { 25 },
NUMBER = { 12 },
PAGES = { 1223--1242 },
}