Automatic estimation of nearshore wave height from video timestacks

Gal, Y., Browne, M,, and Lane, C. (2011) Automatic estimation of nearshore wave height from video timestacks. In: Proceedings of 2011 International Conference on Digital Image Computing: techniques and applications, pp. 364-369. From: DICTA 2011 International Conference on Digital Image Computing: techniques and applications, 6-8 December 2011, Noosa, QLD, Australia.

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Abstract

In this paper a new method for the measurement of near-shore wave height from a digital video sequence is presented. The method identifies the location of the main wave break zones and then detects shoaling waves inside the detected break zone and estimate their heights. A geometric rectification is then used to convert the height measurement from image pixels to metres. Validation of the algorithm against conventional wave height measuring methods, such as a KG7WW3 indicates that the method has the potential of providing a cheap and effective alternative for existing near-shore wave height estimation methods.

Item ID: 21725
Item Type: Conference Item (Refereed Research Paper - E1)
Keywords: digital image processing, digital video analysis, wave break zone detection, wave detection, wave height, automatic estimation, digital videos, geometric rectification, height measurement, image pixels, measuring method, near-shore waves, shoaling waves, wave break, wave heights, coastal engineering. computer graphics, estimation, image processing, multimedia systems, water waves
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ISBN: 978-0-7695-4588-2
Date Deposited: 27 May 2012 22:39
FoR Codes: 04 EARTH SCIENCES > 0405 Oceanography > 040503 Physical Oceanography @ 100%
SEO Codes: 96 ENVIRONMENT > 9699 Other Environment > 969902 Marine Oceanic Processes (excl. Climate Related) @ 100%
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