NDLI: High resolution stereo imaging of sea waves for validation and optimization of wave modelling

Content Provider	IEEE Xplore Digital Library
Author	Corgnati, L. Mazzei, L. Marini, S. Isoppo, B. Ottaviano, E. Besio, G. Magaldi, M.G.
Copyright Year	2015
Description	Author affiliation: Dept. of Civil, Univ. degli Studi di Genova, Genoa, Italy (Besio, G.) \|\| SVM srl, Lerici, Italy (Isoppo, B.) \|\| OnAir srl, Genoa, Italy (Ottaviano, E.) \|\| ISMAR (Marine Sci. Inst. in La Spezia), La Spezia, Italy (Corgnati, L.; Mazzei, L.; Marini, S.; Magaldi, M.G.)
Abstract	A passive stereo vision system for high resolution dense 3D imaging of sea surface is developed. The system is designed for the real-time retrieval of the 3D model of sea surface, in order to extract the spectral features of the wave field to be used for validating and optimizing nearshore wave dynamics numerical models. The system is low cost and easily deployable onboard both fixed and mobile platforms, providing dense coverage of the target areas and fast processing time deriving from a Pattern Recognition (PR) approach. The proposed method for extracting the wave field spectral features brings the computational costs down by remapping each 3D point of the sea surface to an elevation map based on the mean water level. Basic PR techniques are applied to this simplified domain in order to identify crests and troughs of waves and to represent them as oriented lines. Wave typical characteristics, such as significant wave height and mean period, are determined by processing in time and space the identified lines. The system was tested in different acquisition sessions in the Ligurian Sea and it proved to be effective in characterizing the observed wave fields. The use of stereo imagery coupled with PR methods is a promising innovation, as commonly arrays of point measurement devices or the virtual point probe approach in 3D-based techniques are used for the wave field characterization, implying high infrastructural and computational costs.
Starting Page	1
Ending Page	8
File Size	399806
Page Count	8
File Format	PDF
e-ISBN	9781479987368
DOI	10.1109/OCEANS-Genova.2015.7271382
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-18
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sea surface Three-dimensional displays Surface waves Sea measurements Cameras Optical surface waves Extraterrestrial measurements
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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