Searching for authors named "Larry Matthies" – sorted by Relevance.

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45 documents found, showing 1 through 10. Next 10 →

Passive Night Vision Sensor Comparison For Unmanned Ground Vehicle Stereo Vision Navigation
by Ken Owens, Larry Matthies — 1999 — In Proc. of the IEEE Intl. Conf. on Robotics and Automation
…One goal of the "Demo III " unmanned ground vehicle program is to enable autonomous nighttime navigation at speeds of up to 10 m.p. h. To perform obstacle detection at night with stereo vision will require night vision cameras that produce adequate image quality for the driving speeds, veh…
Cited by 6 (1 self) – Add To MetaCart

Real-time detection of moving objects from moving vehicle using dense stereo and optical flow
by Ashit Talukder, Larry Matthies — 2004 — In Conference on Intelligent Robots and Systems
…Dynamic scene perception is very important for autonomous vehicles operating around other moving vehicles and humans. Most work on real-time object tracking from moving plaforms has used sparse features or assumed flat scene structures. We have recently extended a real-time, dense stereo system to i…
Cited by 5 (1 self) – Add To MetaCart

An Obstacle Representation for Off-road Autonomous Driving
by Joseph Weber, Larry Matthies — 1996 — In Proceedings of the Intelligent Vehicles Symposium
…The field of autonomous vehicles has seen considerable success in the domain of freeway driving. Here the constraints of freeway construction, rules of the road, and encoded maps are used to successfully drive a vehicle with a minimum of human intervention. Autonomous navigation in a more general en…
Cited by 1 (0 self) – Add To MetaCart

A Bayesian Foundation for Active Stereo Vision
by Larry Matthies, Masatoshi Okutomi — 1989
…Sensing three-dimensional shape is a central problem in the development of robot systems for autonomous navigation and manipulation. Stereo vision is an attractive approach to this problem in several applications; however, stereo algorithms still lack reliabillty and generality, We address these pro…
Cited by 1 (0 self) – Add To MetaCart

Machine Vision for Obstacle Detection and Ordnance Recognition
by Larry Matthies, Ed Brown — 1996 — In Proc. 1996 Annual meeting of the Assocation for Unmanned Vehicle Systems (AUVSI'96
…Unmanned ground vehicles (UGV's) are under development for missions from scouting battlefields to clearing test ranges of unexploded ordnance (UXO) to exploring other planets. Several new sensing capabilities are critical to enabling these missions. This paper addresses two such capabilities: obstac…
Cited by 4 (0 self) – Add To MetaCart

Evaluation of stereo vision obstacle detection algorithms for off-road autonomous navigation
by Arturo Rankin, Andres Huertas, Larry Matthies — 2005 — In AUVSI Symp. on Unmanned Systems
…Reliable detection of non-traversable hazards is a key requirement for off-road autonomous navigation. Under the Army Research Laboratory (ARL) Collaborative Technology Alliances (CTA) program, JPL has evaluated the performance of seven obstacle detection algorithms on a General Dynamics Robotic Sys…
Cited by 8 (1 self) – Add To MetaCart

Bias reduction filter convergence for long range stereo
by Gabe Sibley, Larry Matthies, Gaurav Sukhatme — 2005 — In 12th International Symposium of Robotics Research
…Abstract. We are concerned here with improving long range stereo by filtering image sequences. Traditionally, measurement errors from stereo camera systems have been approximated as 3-D Gaussians, where the mean is derived by triangulation and the covariance by linearized error propagation. However,…
Cited by 2 (0 self) – Add To MetaCart

Detecting Water Hazards for Autonomous Off-Road Navigation
by Larry Matthies, Paolo Bellutta, Mike Mchenry — 2003 — Proceedings of SPIE Conference 5083: Unmanned Ground Vehicle Technology V
…Detecting water hazards for autonomous, off-road navigation of unmanned ground vehicles is a largely unexplored problem. In this paper, we catalog environmental variables that affect the difficulty of this problem, including day vs. night operation, whether the water reflects sky or other terrain fe…
Cited by 5 (2 self) – Add To MetaCart

Obstacle detection in foliage with ladar and radar
by Larry Matthies, Chuck Bergh, Andres Castano, Jose Macedo — 2003 — In International Symposium on Robotic Research
…Abstract. Autonomous off-road navigation is central to several important applications of unmanned ground vehicles. This requires the ability to detect obstacles in vegetation. We examine the prospects for doing so with scanning ladar and with a linear array of 2.2 GHz micro-impulse radar transceiver…
Cited by 4 (0 self) – Add To MetaCart

Maximum Likelihood Rover Localization by Matching Range Maps
by Clark Olson, Larry H. Matthies — 1998 — In Proceedings of the International Conference on Robotics and Automation
…This paper describes maximum likelihood estimation techniques for performing rover localization in natural terrain by matching range maps. An occupancy map of the local terrain is first generated using stereo vision. The position of the rover with respect to a previously generated occupancy map is t…
Cited by 45 (15 self) – Add To MetaCart

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