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A Complete Process For Shipborne Sea-Ice Field Analysis Using Machine Vision

Andrei Sandru, Heikki Hyyti, Arto Visala, Pentti Kujala
2020 IFAC-PapersOnLine  
Through our initial experiments in pack ice conditions, the proposed system has proved to be able to segment most of the individual floes and estimate their size and area.  ...  Through our initial experiments in pack ice conditions, the proposed system has proved to be able to segment most of the individual floes and estimate their size and area.  ...  In addition, we would like to thank Jakke Kulovesi for providing the image capturing software, as well as Mikko Suominen for aiding with the preparations and ship instrumentation.  ... 
doi:10.1016/j.ifacol.2020.12.1458 fatcat:vhfuatbz5nhwrawyi4se3fympq

Ice Floe Identification in Satellite Images Using Mathematical Morphology and Clustering About Principal Curves

Jeffrey D. Banfield, Adrian E. Raftery
1992 Journal of the American Statistical Association  
structures intended to survive in the presence of ice.  ...  We describe an automatic and accurate method for identifying ice floes and their outlines.  ...  INTRODUCTION Knowledge of the shapes, sizes and spatial distribution of ice floes is important for understanding the physical processes operating on the ice pack in the polar regions.  ... 
doi:10.2307/2290446 fatcat:hnmy27tjojc7ncdf2wy6fqog3y

Accuracy of sea ice floe size observation from an aerial camera at slant angles

Christopher Dahlin Rodin, Tor Arne Johansen
2017 2017 Workshop on Research, Education and Development of Unmanned Aerial Systems (RED-UAS)  
It is nevertheless performed in several methods to estimate the size of ice floes.  ...  In this paper, ice floe size estimation is evaluated for different scenarios when using an aerial camera at slant angles.  ...  Image to world coordinates The pinhole camera model [8] is used to model the projection of world coordinates onto an image plane.  ... 
doi:10.1109/red-uas.2017.8101669 fatcat:irqf3i4eynfjhh2ldxc6jphkki

Measuring sea-ice concentration and floe-size distribution by image processing

Ken-Ichiro Muramoto, Kohki Matsuura, Tatsuo Endoh
1993 Annals of Glaciology  
A technique for analyzing sea-ice concentration and floe-size distribution by means of image processing is proposed. The sea ice was photographed by video camera from the ship.  ...  Although the off-line method requires more time to calculate, it is useful for detailed analysis of regional ice properties.  ...  ACKNOWLEDGEMENTS The authors thank M. Kosugi for development of software.  ... 
doi:10.1017/s0260305500011228 fatcat:tlsag7p5vrd2hbycvgfbloczr4

Brief communication: Pancake ice floe size distribution during the winter expansion of the Antarctic marginal ice zone

Alberto Alberello, Miguel Onorato, Luke Bennetts, Marcello Vichi, Clare Eayrs, Keith MacHutchon, Alessandro Toffoli
2019 The Cryosphere  
</strong> The size distribution of pancake ice floes is calculated from images acquired during a voyage to the Antarctic marginal ice zone in the winter expansion season.  ...  The floe size distribution shows two distinct slopes on either side of the 2.3–4<span class="thinspace"></span>m range, neither of which conforms to a power law.  ...  Support from the Australian Antarctic Science Program (project 4434) is acknowledged.  ... 
doi:10.5194/tc-13-41-2019 fatcat:6kuimwsn75ct3ofsw6jhk6texq

Image Techniques for Identifying Sea-Ice Parameters

Qin Zhang, Roger Skjetne
2014 Modeling, Identification and Control  
The estimation of ice forces are critical to Dynamic Positioning (DP) operations in Arctic waters. Ice conditions are important for the analysis of ice-structure interaction in an ice field.  ...  , ice types, and floe size distribution from sea-ice images to ensure safe operations of structures in ice covered regions.  ...  Introduction In 2008, the U.S.  ... 
doi:10.4173/mic.2014.4.6 fatcat:vyr4f7utsrfmxgfhr65xm5kjzm

The Arctic DP Research Project: Effective Stationkeeping in Ice

Roger Skjetne, Lars Imsland, Sveinung Løset
2014 Modeling, Identification and Control  
The special edition of MIC on Arctic DP presents a set of articles that summarize to an extent the activities of the research project "Arctic DP: Safe and green dynamic positioning operations of offshore  ...  An important goal will be to exploit the resources offered by for instance the Barents Sea as a new European energy province, and to do this in accordance with the principles of sustainable development  ...  Acknowledgments The authors would like to thank the Research Council of Norway for the main financial support of the KMB project Arctic DP through project no. 199567.  ... 
doi:10.4173/mic.2014.4.1 fatcat:3blslwagzrcyrmj5xbnrjq4hkq

Page 7077 of Mathematical Reviews Vol. , Issue 95k [page]

1995 Mathematical Reviews  
ISBN 0-387-94284-X This text serves as an introduction to game theory at the ad- vanced undergraduate level. There are seven chapters.  ...  Additionally, granted the numerical power of a computer with its attendant indifference to whether it plots lines and circles or analytically much more complicated curves, an opportunity exists to craft  ... 

Image processing for ice floe analyses in broken-ice model testing

Q. Zhang, R. Skjetne, I. Metrikin, S. Løset
2015 Cold Regions Science and Technology  
Finally, the proposed algorithm is applied to an ice surveillance video to further illustrate its applicability to ice management.  ...  An image processing method based on a Gradient Vector Flow (GVF) Snake and a distance transform is proposed to identify individual ice floes.  ...  Acknowledgments The authors acknowledge the Research Council of Norway (RCN) for funding the Arctic DP project through Project No. 199567/I40 and the MARTEC ERA-NET project DYPIC through Project No. 196897  ... 
doi:10.1016/j.coldregions.2014.12.004 fatcat:vqwideipqvfnbkuusjvth23m3y

Drones in a Cold Climate

Guy Williams, Alexander Fraser, Arko Lucieer, Darren Turner, Eva Cougnon, Peter Kimball, Takenobu Toyota, Ted Maksym, Hanumant Singh, Frank Nitsche, Matt Paget
2016 EOS  
As climate change reshapes the Earth's polar regions, scientists turn to drone-mounted cameras to measure sea ice. One expedition found out that flying drones near Antarctica isn't easy.  ...  Palmer on 13 April 2015 (day 3) during an assessment of floe size distribution conducted en route to the ice shelves near East Antarctica. © 2016. The authors. CC BY 3.0  ...  This introduction included going over emergency responses to drones crashing into the ship or personnel or going over the side and needing recovery.  ... 
doi:10.1029/2016eo043673 fatcat:iv4bhesr3fahljmhefbxosvppi

EISCAM — Digital image acquisition and processing for sea ice parameters from ships

B. Weissling, S. Ackley, P. Wagner, H. Xie
2009 Cold Regions Science and Technology  
The resultant orthorectified and spatially registered images can thus be used to derive ice concentration, ice types, floe sizes, and area of deformed ice, parameters recorded by an ASPeCt observer based  ...  , were used to demonstrate the method.  ...  We gratefully acknowledge "the team" of ice observers on the SIMBA cruise, particularly John Peña (National Ice Center), Sarah Anderson (PolarTrec teacher), Sharon Stammerjohn and Katherine Leonard (Lamont-Doherty  ... 
doi:10.1016/j.coldregions.2009.01.001 fatcat:d7lgh7nct5fjtae7c6v2oxxh5y

Continuum sea ice rheology determined from subcontinuum mechanics

P. D. Taylor, D. L. Feltham, P. R. Sammonds, D. Hatton
2006 Journal of Geophysical Research  
the motion of the floes in response to the continuum-scale strain-rate.  ...  1] A method is presented to calculate the continuum-scale sea ice stress as an imposed, continuum-scale strain-rate is varied.  ...  since its introduction.  ... 
doi:10.1029/2005jc002996 fatcat:k45pupolajculemqnenautcxvm

Fracture of summer perennial sea ice by ocean swell as a result of Arctic storms

Matthew G. Asplin, Ryan Galley, David G. Barber, Simon Prinsenberg
2012 Journal of Geophysical Research  
This process increased the total ice floe perimeter exposed to the open ocean, allowing for more efficient distribution of energy from ocean heat fluxes, and incoming radiation into the floes, thereby  ...  These large swells induced nearly instantaneous widespread fracturing of the multiyear pack ice, reducing the large, (>1 km diameter) parent ice floes to small (100-150 m diameter) floes.  ...  project funding.  ... 
doi:10.1029/2011jc007221 fatcat:2lqpfztkzrfhzci5ux3xk3wzr4

Surge motion of an ice floe in waves: comparison of theoretical and experimental models [article]

Michael Meylan, Lucas Yiew, Luke Bennetts, Benjamin French, Giles Thomas
2014 arXiv   pre-print
A theoretical model and an experimental model of surge motions of an ice floe due to regular waves are presented.  ...  The experimental model is implemented in a wave basin at scale 1:100, using a thin plastic disk to model the floe.  ...  MM and LB acknowledge funding support from the Australian Antarctic Science Grant Program (Project 4123).  ... 
arXiv:1403.1933v1 fatcat:2xzywuuoergnfptvgvpwzgqdc4

Floe-size distributions in laboratory ice broken by waves

Agnieszka Herman, Karl-Ulrich Evers, Nils Reimer
2017 The Cryosphere Discussions  
The analysis shows that although the floe sizes cover a wide range of values (up to 5 orders of magnitude in the case of floe surface area), their probability density functions (pdfs) do not have heavy  ...  Moreover, the pdfs have a maximum that can be attributed to wave-induced flexural strain, producing preferred floe sizes.  ...  In this work, each polygon representing an ice floe in the analyzed image is assigned an ellipse that has the same second central moments as the polygon.  ... 
doi:10.5194/tc-2017-186 fatcat:tj65lqcubfbjlk4id4keyyekje
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