Fugro Marinestar to Sponsor Hydrographic Data Acquisition & Processing Weeks

Fugro Marinestar, provider of a range of GNSS positioning services worldwide tailored for the dredging and marine construction, navy and hydrographic, wind farm and oceanographic research sectors, has become official sponsor of the Hydrographic Data Acquisition & Processing Weeks organized by 'Hydro International'. The online event will consist of a dedicated web page, extra newsletters and the bumper-packed November-December issue of 'Hydro International', the global magazine for the hydrography industry. During the Hydrographic Data Acquisition & Processing Weeks (November 9 – December 21), which will be supported by an abundance of new articles, columns, Q&As, videos and other new content, the Hydro International community... (read more)
2020-10-21 02:59:09

Panagiotis Agrafiotis

Panagiotis Agrafiotis holds a doctorate in Engineering from the National Technical University of Athens as well as an MSc in Geoinformatics and an MEng diploma in Surveying Engineering. His current research focuses on image-based bathymetry mapping for shallow and deep waters using photogrammetry and machine learning techniques. His expertise includes 3D computer vision, remote sensing and machine learning. During the past 8 years, he has worked on more than 16 research projects as a member of the Lab of Photogrammetry of NTUA, the Photogrammetric Vision Lab of CUT and the Institute of Communication and Computer Systems of NTUA. He also... (read more)
2020-10-13 10:50:47

Bathymetry from UAV Imagery and Machine Learning

Improving Results with Refraction Corrections
Accurate bathymetric mapping of shallow areas is essential for a plethora of offshore activities. Through Structure from Motion (SfM) and Multiview Stereo (MVS) techniques, images can provide a low-cost alternative compared to Lidar and sonar systems while also offering important visual information. This article presents a new framework for mapping the seabed in clear and calm shallow waters for small- and large-scale surveys using aerial imagery and machine learning to correct the geometric effects of refraction on the 3D point clouds and the imagery. SfM is a photogrammetric technique for estimating 3D structures from 2D image sequences. It involves acquiring... (read more)
2020-10-13 10:42:39

Extraterrestrial Hydrography

While there is still lots of ocean mapping work to do on Earth, oceans situated elsewhere in our solar system hold plenty of mysteries too, writes Wim van Wegen in this column. The oceans on our planet remain largely an unexplored world, far from divulging many of their secrets. Seabed 2030, which is a joint project between the Nippon Foundation of Japan and the General Bathymetric Chart of the Oceans (GEBCO), aims to collect all available bathymetric data in order to produce the definitive map of the world’s ocean floor by 2030. As of today (and despite many years of... (read more)
2020-10-08 08:47:41

Venezuela Performs Bathymetric Surveys with Own Satellite

Ever since the launch of the VRSS-2 Antonio José de Sucre satellite in 2017, researchers have been looking into how best to use and apply the information that it provides for the benefit of environmental development and sustainability. For example, the bathymetry derived from satellite images is very beneficial for hydrographic services, since it allows information to be obtained that has not been explored with traditional acoustic methods. The Venezuela Hydrographic Office has started to use this method, also to improve its hydrographic coverage. The Antonio José de Sucre satellite is Venezuela's third artificial satellite. It was launched from the Jiuquan... (read more)
2020-10-07 11:06:14

Measuring and 3D Mapping of Sea Ice in the Arctic

Underneath the Top of the Iceberg
Sea ice is one of the most important parameters when it comes to ice-albedo feedback; in other words, the fraction of incoming solar radiation that is reflected directly back into space. Because of the grave importance of the decrease in the amount of sea ice due to the climate crisis, gaining a full understanding of its complex structure is more important than ever. Both large and small Autonomous Underwater Vehicles (AUVs) have been used successfully to map the 3D structure of the underside of sea ice, but always in an experimental context. The challenge is to determine the best way... (read more)
2020-10-06 11:21:52

Scottish Subsea Power Cable Installation Supported by MakaiLay Software Solution

The cable deployment control software MakaiLay was commissioned on the Cable Laying Vessel (CLV) Normand Clipper in July 2020 by Global Offshore. Global Marine Group is a leading provider of subsea cable installation, maintenance and burial services worldwide for both telecom and power cables through its brands Global Marine and Global Offshore. As part of Scottish and Southern Electricity Networks’ (SSEN) Pentland Firth East project, a 37km subsea power cable was installed between the Scottish mainland and the island of Hoy in Orkney. Global Offshore completed the installation using the Normand Clipper with support from Makai and their subsea cable... (read more)
2020-09-29 09:47:16

iXblue Builds Capacity for Simultaneous Operations on Either Side of the Tasman

iXblue has announced the award of two significant hydrographic charting projects this month. The projects were awarded by the Australian Government Department of Defence and Land Information New Zealand (LINZ) under their respective annual survey and charting programmes. Despite the challenges posed by the COVID-19 pandemic this year, iXblue will be exercising new in-house capabilities to undertake both major projects simultaneously. The LINZ project, part of iXblue’s programme on the Hydrographic Suppliers Panel, will see nearly 2,000 linear nautical miles of high-resolution bathymetry data collected in coastal waters off the Coromandel Peninsula – a highly trafficked waterway on the east... (read more)
2020-09-29 08:40:10

The Nippon Foundation-GEBCO Seabed 2030 Project Enters New Partnership with IIC Technologies

A Memorandum of Understanding (MOU) has been signed between The Nippon Foundation-GEBCO Seabed 2030 Project and IIC Technologies Ltd. The MOU establishes a new partnership between Seabed 2030 and IIC Technologies in recognition that both parties are working to increase humanity’s understanding of the world’s oceans. Seabed 2030 is a collaborative project between The Nippon Foundation and GEBCO to inspire the complete mapping of the world’s ocean by 2030, and to compile all bathymetric data into the freely available GEBCO Ocean Map. GEBCO is a joint project of the International Hydrographic Organization (IHO) and the Intergovernmental Oceanographic Commission (IOC), and... (read more)
2020-09-22 09:54:59

Valeport Launches New Sensors for Subsea Survey and ROV/AUV Operations

Valeport, a leading manufacturer of oceanographic and hydrographic instrumentation, has further expanded its portfolio’s capability with the launch of two new sensors for ROVs/AUVs and subsea surveys. Valeport has launched the new miniIPS2 and new uvSVX, which both offer operationally specific interchangeable pressure transducers that deliver enhanced accuracy for specific depth ranges. These field-swappable sensor heads make it easy for users to select the correct pressure range for their work and offer increased accuracy at any depth, alongside streamlining benefits to users who previously required different instruments for shallow and deep water.  Interchangeable Pressure Module The smart miniIPS2 underwater pressure... (read more)
2020-09-22 09:18:06
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