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An automated and reliable solution for the generalization of nautical charts

Cartographers working in hydrographic offices and ENC editors have the responsibility of processing bathymetry datasets to generate ENCs compliant with the S-57 IHO standard​. This is a time-consuming and fastidious task that requires a specific set of skills and knowledge. Nowadays, this expertise is challenged by the constant progress being made in data acquisition techniques and equipment, which has led to a significant increase in the number and size of bathymetry datasets. To face these challenges, the CARTONAUT project was launched by Shom cartographers in collaboration with GEOMOD marine geomatics engineers, both located in Brest, France. The project led to the creation of CALHYPSO, an automated solution for the generalization of bathymetry datasets for S-57 ENC production. This article reports the development of CALHYPSO through the CARTONAUT project and provides details about the tool’s concept and features. Cartographers working in hydrographic offices and ENC editors have the responsibility of processing bathymetry datasets to generate ENCs compliant with the S-57 IHO standard​. This is a time-consuming and fastidious...

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Italo Oliveira Ferreira

Italo Oliveira Ferreira is a professor in Geomatic Engineering at the Federal University of Viçosa (UFV). He is a geomatic engineer with a Master’s and Doctorate in Spatial Information (Geodesy...

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Laura Coelho de Andrade

Laura Coelho de Andrade is a geomatic engineer. She is a Master’s student in Spatial Information (Geodesy and Hydrography) at the Federal University of Viçosa (UFV). She is also a...

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Lars Langhorst

Lars Langhorst is currently developing software to predict sedimentation levels in the Panama Canal using machine learning, with which he will conclude his MSc in Geomatics. He is always learning...

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Norbit Winghead Wideband Multibeam Sonar Applied for Subsea Leakage Detection

The key objective was to make a rapid and accurate determination of the source of the diesel and oil that had appeared on the ocean’s surface. The company carried out hydrographic survey work using a Norbit Winghead i77h multibeam echosounder (MBES) system. An oil slick was seen on the surface of Nootka Sound and staining on rocks of nearby Bligh Island, west of Vancouver Island, Canada, in late 2020. This set in...

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