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Proceedings Paper

SailSpy: a vision system for yacht sail shape measurement
Author(s): Olof J. Olsson; P. Wayne Power; Chris C. Bowman; G. Terry Palmer; Roger S. Clist
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Paper Abstract

SailSpy is a real-time vision system which we have developed for automatically measuring sail shapes and masthead rotation on racing yachts. Versions have been used by the New Zealand team in two America's Cup challenges in 1988 and 1992. SailSpy uses four miniature video cameras mounted at the top of the mast to provide views of the headsail and mainsail on either tack. The cameras are connected to the SailSpy computer below deck using lightweight cables mounted inside the mast. Images received from the cameras are automatically analyzed by the SailSpy computer, and sail shape and mast rotation parameters are calculated. The sail shape parameters are calculated by recognizing sail markers (ellipses) that have been attached to the sails, and the mast rotation parameters by recognizing deck markers painted on the deck. This paper describes the SailSpy system and some of the vision algorithms used.

Paper Details

Date Published: 1 November 1992
PDF: 6 pages
Proc. SPIE 1823, Machine Vision Applications, Architectures, and Systems Integration, (1 November 1992); doi: 10.1117/12.132081
Show Author Affiliations
Olof J. Olsson, Industrial Research Ltd. (New Zealand)
P. Wayne Power, Industrial Research Ltd. (New Zealand)
Chris C. Bowman, Industrial Research Ltd. (New Zealand)
G. Terry Palmer, Industrial Research Ltd. (New Zealand)
Roger S. Clist, Industrial Research Ltd. (New Zealand)

Published in SPIE Proceedings Vol. 1823:
Machine Vision Applications, Architectures, and Systems Integration
Bruce G. Batchelor; Susan Snell Solomon; Frederick M. Waltz, Editor(s)

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