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Publications
Vieira, M., Guedes Soares, C., Guimaraes, P.V., Bergamasco, F. and Campos, R.M. (2025), Nearshore space-time ocean wave observation using low-cost video-cameras, Coastal Engineering, Vol. 197, 104694.
A low-cost stereo vision technique is presented to estimate the ocean wave field in space and time. The method costs only about 1% of traditional instruments for wave measurements and is even cheaper and easier to implement than typical stereo video techniques. Despite the system providing lower-resolution data than traditional stereo video systems, the low-cost video synchronisation scheme does not require dedicated acquisition software, triggers, and cables, making the system completely portable. The performance of the system has been validated with a co-located pressure gauge, allowing the measurement of the waves in experimental campaigns in shallow water. The results indicate a higher significant wave height when considering spatial wave fields than in the temporal point elevation series. The experimental results evidenced that surface displacements in the surf zone tend not to behave as a strictly Gaussian process. The low-cost stereo video method is a promising approach for acquiring spatiotemporal wave data for specific wave-related engineering problems.
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