Retrieval of wind Ripple Speed From Stereo Imagery of sea Surface: Preliminary Results

Stereo imagery of the sea surface is one of the most effective tools for remote sensing wind waves with lengths of half a meter or more. In this paper, we propose a new method for using a series of stereo images to reconstruct the wind ripple velocity field on a long surface wave profile. The presen...

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Bibliographic Details
Main Authors: Bogatov, N.A., Ermoshkin, A.V., Kapustin, I.A., Kupaev, A.V., Molkov, A.A.
Format: Conference Proceeding
Language:English
Subjects:
Bragg waves
Doppler shift
remote sensing
Sea measurements
sea roughness
Sea surface
Software
stereo imagery
Surface reconstruction
Surface waves
Wind speed
wind waves
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Summary:Stereo imagery of the sea surface is one of the most effective tools for remote sensing wind waves with lengths of half a meter or more. In this paper, we propose a new method for using a series of stereo images to reconstruct the wind ripple velocity field on a long surface wave profile. The presented method is based on detecting characteristic structures on the sea surface (short wind waves, breaking waves, foam, etc.), determining their displacement between two adjacent frames (similarly to the Particle Imaging Velocimetry - PIV method), and recalculating estimated displacement from frame coordinates into three-dimensional world coordinates through projection onto a long wave profile obtained using stereo pairs. The test results on the data of stereo imagery of the sea surface carried out from a stationary oceanographic platform in the Black Sea in 2021 are presented in this paper too.
ISSN:2153-7003
DOI:10.1109/IGARSS46834.2022.9883987