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1 November 2008 Nearshore Wave Measurement Using Single-Video Images of Buoy Motions
Baeck Oon Kim, Hong Yeon Cho, Dhong Il Lim, Gil Lim Yoon, Im Sang Oh, Yong Ahn Park
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Abstract

This paper presents a wave measurement technique based on single-video monitoring of moored buoys. A simple photogrammetry is proposed, with a constraint that the distance from video camera to buoy should be predetermined. The distance is approximated to a constant under the condition that it is much greater than the range of the buoy motion. Image coordinates of a buoy are mapped onto a spherical surface without significant errors in vertical ground coordinates. Wave characteristics are comparable to those from a bottom pressure gauge, indicating that the video technique has the potential to remotely measure waves in coastal environments. We anticipate our finding to be a starting point for an economic instrument of wave measurement through development of an automated image processing technique.

Baeck Oon Kim, Hong Yeon Cho, Dhong Il Lim, Gil Lim Yoon, Im Sang Oh, and Yong Ahn Park "Nearshore Wave Measurement Using Single-Video Images of Buoy Motions," Journal of Coastal Research 2008(246), 1481-1486, (1 November 2008). https://doi.org/10.2112/07-0850.1
Accepted: 1 September 2007; Published: 1 November 2008
JOURNAL ARTICLE
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KEYWORDS
buoy motion
photogrammetry
video monitoring
wave measurement
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