Undersea optical stationkeeping. Improved methods

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Submersibles require the capability to accurately maintain their position when they are observing, photographing, or working at a site. The most direct way for an ROV or AUV to maintain position in the near bottom environment is to track or lock onto stationary objects on the ocean floor. A particular advantage of an optical stationkeeping system is its ability to use natural rather than manmade beacons. Several improvements to our previously reported optical flow methods for the detection of vehicle motion have been investigated. Experimental results indicate that an adaptation of Newton-Raphson search combined with the use of a low-noise, high accuracy camera can drastically reduce the number of image points at which computations need be made. Other experiments with an algorithm, which accounts for illumination variations that one may encounter in undersea environments, show significant improvement in the estimation of optical flow and vehicle motion.

Original languageEnglish
Pages (from-to)319-338
Number of pages20
JournalJournal of Robotic Systems
Volume8
Issue number3
StatePublished - Jun 1 1991
Externally publishedYes

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Optical flows
Submersibles
Remotely operated vehicles
Optical systems
Lighting
Cameras
Experiments

ASJC Scopus subject areas

  • Control and Systems Engineering

Cite this

Undersea optical stationkeeping. Improved methods. / Negahdaripour, Shahriar; Fox, Joel.

In: Journal of Robotic Systems, Vol. 8, No. 3, 01.06.1991, p. 319-338.

Research output: Contribution to journalArticle

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