Field Observation of Longshore and Rip Current Using Imageries of Web Camera Installed on Hokota Coast

Ohtani, Yasuro; Uda, Takaaki; Osaki, Yasuhiro; Naganuma, Shingo; San-Nami, Toshiro; Ooki, Yasuhiro; Ichimura, Yasushi

doi:10.2208/kaigan.74.i_91

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal E

2018

DOI: 10.2208/kaigan.74.i_91

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Field Observation of Longshore and Rip Current Using Imageries of Web Camera Installed on Hokota Coast

Yasuro Ohtani¹,

Takaaki Uda²,

Yasuhiro Osaki³

et al.

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Cited by 5 publications

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A New Method for Beach Bathymetry Using a Combination of Multiple Drones

TOKUMARU,

WATANABE,

MIZUSAKO

et al. 2024

Journal of JSCE

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Drone technology is expected to play an important role in various fields, including topographic survey, wave and current monitoring, lifesaving, etc. in the ocean. In the present paper, we propose a new method for bathymetry, with the combination of an unmanned aerial vehicle (UAV) and an unmanned surface vehicle (USV). First, the motion of the USV is evaluated using images obtained by the UAV. Second, the pixel shift values of the seabed are calculated through underwater images by the USV. Finally, based on these results, the water depth is acquired by applying triangulation. The experimental results obtained using a wave basin have shown the maximum estimation error of 1.1cm, indicating the effectiveness of the proposed method.

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A New Method for Beach Bathymetry Using a Combination of Multiple Drones

TOKUMARU,

WATANABE,

MIZUSAKO

et al. 2024

Journal of JSCE

View full text Add to dashboard Cite

show abstract

Verification of Detection of Rip Current Using Ai

Ishikawa¹,

Sato²,

Shimada³

et al. 2019

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal E

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Field Observation of Nearshore Current Using GPS Floats and Dyed Tracer on Kashimanada Coast

Uda¹,

Ohtani²,

Naganuma³

et al. 2019

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal E

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Field Observation of Longshore and Rip Current Using Imageries of Web Camera Installed on Hokota Coast

Cited by 5 publications

References 1 publication

A New Method for Beach Bathymetry Using a Combination of Multiple Drones

A New Method for Beach Bathymetry Using a Combination of Multiple Drones

Verification of Detection of Rip Current Using Ai

Field Observation of Nearshore Current Using GPS Floats and Dyed Tracer on Kashimanada Coast

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