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View article: Brain dissection photogrammetry: a tool for studying human white matter connections integrating ex vivo and in vivo multimodal datasets
Brain dissection photogrammetry: a tool for studying human white matter connections integrating ex vivo and in vivo multimodal datasets Open
Understanding the architecture of the white matter of the human brain is central to neuroscience and clinics. Despite major advances in tractography and white matter dissection, integrating these complementary techniques remains a longstan…
View article: The SUNRISE Summer School. A Report on the First Two Editions
The SUNRISE Summer School. A Report on the First Two Editions Open
The SUNRISE Summer School (Seashore and UNderwater documentation of aRchaeological herItage palimpSests and Environment) has reached its second edition. The school was co-organised by the Politecnico di Torino and the Italian Society of Ph…
View article: Underwater hyperspectral imagery for Posidonia oceanica mapping: challenges and preliminary results from the POSEIDON Project
Underwater hyperspectral imagery for Posidonia oceanica mapping: challenges and preliminary results from the POSEIDON Project Open
Posidonia oceanica (PO) meadows are important ecosystems in the Mediterranean, supporting biodiversity and ecosystem services, yet they face increasing threats due to anthropogenic pressures and climate change. To address these challenges,…
View article: Underwater synthetic image generation for multi-temporal monitoring of crustose coralline algae
Underwater synthetic image generation for multi-temporal monitoring of crustose coralline algae Open
Monitoring crustose coralline algae (CCA) is crucial for understanding the health and evolution of marine ecosystems. In particular, CCA-dominated assemblages serve as key indicators of ecological change, especially in the context of globa…
View article: Experimenting with learning-based image orientation approaches for photogrammetric mapping of Posidonia oceanica meadows
Experimenting with learning-based image orientation approaches for photogrammetric mapping of Posidonia oceanica meadows Open
Posidonia oceanica (L.) Delile (PO) is an endemic seagrass of the Mediterranean Sea, where it grows in the form of dense meadows extending from the surface up to 40 m depth. PO plays a key role in the underwater realm, providing numerous e…
View article: Underwater optical metrology for precision monitoring of marine habitats: the MANATEE project
Underwater optical metrology for precision monitoring of marine habitats: the MANATEE project Open
Marine habitats are subject to monitoring activities to assess the impact of climate change, as required by EU and national directives. Coralligenous reefs are typical Mediterranean underwater seascapes, which originate from the growth of …
View article: Removing dead coral after marine heatwaves can mitigate coral–algae competition and increase viable coral recruitment
Removing dead coral after marine heatwaves can mitigate coral–algae competition and increase viable coral recruitment Open
Ecological disturbance regimes are shifting and leaving behind novel legacies, like the remnant structures of dead foundation species, which have poorly known impacts on ecosystem resilience. We explored how dead coral skeletons produced b…
View article: Removing dead coral after marine heatwaves can mitigate coral-algae competition and increase viable coral recruitment
Removing dead coral after marine heatwaves can mitigate coral-algae competition and increase viable coral recruitment Open
Ecological disturbance regimes are shifting and leaving behind novel legacies, like the remnant structures of dead foundation species, which have poorly known impacts on ecosystem resilience. We explored how dead coral skeletons produced b…
View article: Brain Dissection Photogrammetry for Studying Human White Matter Connections: a Unique Resource for Integrating Ex-vivo and In-vivo Multimodal Datasets
Brain Dissection Photogrammetry for Studying Human White Matter Connections: a Unique Resource for Integrating Ex-vivo and In-vivo Multimodal Datasets Open
Understanding the architecture of the white matter (WM) of the human brain is central to neuroscience and clinics. Despite major advances in tractography and WM dissection, integrating these complementary techniques remains a longstanding …
View article: High-detail and low-cost underwater inspection of large-scale hydropower dams
High-detail and low-cost underwater inspection of large-scale hydropower dams Open
The article presents a practical method that combines low-cost camera systems with remotely operated vehicles (ROVs) to accomplish a comprehensive but economically feasible underwater survey of large hydropower infrastructures. Typically, …
View article: Evaluation of the Accuracy of Photogrammetric Reconstruction of Bathymetry Using Differential GNSS Synchronized with an Underwater Camera
Evaluation of the Accuracy of Photogrammetric Reconstruction of Bathymetry Using Differential GNSS Synchronized with an Underwater Camera Open
Photogrammetry is a valuable tool for 3D documentation, mapping, and monitoring of underwater environments. However, the ground control surveys necessary for georeferencing and validation of the reconstructed bathymetry are difficult and t…
View article: High-accuracy height differences using a pressure sensor for ground control points measurement in underwater photogrammetry
High-accuracy height differences using a pressure sensor for ground control points measurement in underwater photogrammetry Open
Three-dimensional reference points (RPs) are fundamental for datum definition and metric validation in many photogrammetric applications, often used as ground control points (GCPs) to constrain the bundle adjustment solution. Nevertheless,…
View article: POSER: an oPen sOurce Simulation platform for tEaching and tRaining underwater photogrammetry
POSER: an oPen sOurce Simulation platform for tEaching and tRaining underwater photogrammetry Open
Underwater photogrammetry presents unique challenges due to the optical properties of water that, if not correctly taken into account, might affect the quality of the survey and the related 2D and 3D products. It is recognized nowadays the…
View article: Quantitative Evaluation of Color Enhancement Methods for Underwater Photogrammetry in Very Shallow Water: a Case Study
Quantitative Evaluation of Color Enhancement Methods for Underwater Photogrammetry in Very Shallow Water: a Case Study Open
Underwater photogrammetry is often hampered by chromatic aberration, leading to degraded 2D and 3D products. This study investigates the effectiveness of various color enhancement methods in addressing these challenges.Theoretical consider…
View article: Under and Through Water Datasets for Geospatial Studies: the 2023 ISPRS Scientific Initiative “NAUTILUS”
Under and Through Water Datasets for Geospatial Studies: the 2023 ISPRS Scientific Initiative “NAUTILUS” Open
Benchmark datasets have become increasingly widespread in the scientific community as a method of comparison, validation, and improvement of theories and techniques thanks to more affordable means for sharing. While this especially holds f…
View article: Multitemporal Seagrass Mapping and Monitoring of Posidonia Meadows and Banquettes for Blue Carbon Conservation: The Poseidon Project
Multitemporal Seagrass Mapping and Monitoring of Posidonia Meadows and Banquettes for Blue Carbon Conservation: The Poseidon Project Open
In the framework of mapping underwater environments, Posidonia Oceanica (PO) is a fundamental indicator for environmental monitoring and related studies and analyses for climate change. The POSEIDON project aims to study, develop and test …
View article: DESIGN AND APPLICATION OF FLIPPED CLASSROOM METHODOLOGY IN THE SUBJECT OF PHYSICAL GEODESY
DESIGN AND APPLICATION OF FLIPPED CLASSROOM METHODOLOGY IN THE SUBJECT OF PHYSICAL GEODESY Open
[EN] The subject of ‘Physical geodesy’ covers high-level physical and mathematical concepts related to the terrestrial gravity field, geoid modelling, and vertical systems. Teaching these concepts in traditional lecture sessions is challen…
View article: MANATEE Project: Monitoring and Mapping of Marine Habitat with Integrated Geomatics Technologies
MANATEE Project: Monitoring and Mapping of Marine Habitat with Integrated Geomatics Technologies Open
Italian seas are home to a unique heritage of biodiversity in terms of species and habitats and are protected by EU conventions and directives. To preserve this richness effectively, monitoring activities are key to assess its state of hea…
View article: Quantifying the Loss of Coral from a Bleaching Event Using Underwater Photogrammetry and AI-Assisted Image Segmentation
Quantifying the Loss of Coral from a Bleaching Event Using Underwater Photogrammetry and AI-Assisted Image Segmentation Open
Detecting the impacts of natural and anthropogenic disturbances that cause declines in organisms or changes in community composition has long been a focus of ecology. However, a tradeoff often exists between the spatial extent over which r…
View article: THE SUNRISE SUMMER SCHOOL: AN INNOVATIVE LEARNING-BY-DOING EXPERIENCE FOR THE DOCUMENTATION OF ARCHAEOLOGICAL HERITAGE
THE SUNRISE SUMMER SCHOOL: AN INNOVATIVE LEARNING-BY-DOING EXPERIENCE FOR THE DOCUMENTATION OF ARCHAEOLOGICAL HERITAGE Open
The first edition of the SUNRISE (Seashore and UNderwater documentation of aRchaeological herItage palimpSests and Environment) summer school was carried out in Marina di Ragusa in Sicily (Italy) from 3rd to 9th September 2022. It was join…
View article: FROG: A PORTABLE UNDERWATER MOBILE MAPPING SYSTEM
FROG: A PORTABLE UNDERWATER MOBILE MAPPING SYSTEM Open
Browsing the scientific and professional literature it appears that the concept of mobile mapping underwater is not as common as in ‘terrestrial’ applications. Nevertheless, exploring and mapping the ocean’s depths is a priority challenge …
View article: A MODULAR AND LOW-COST PORTABLE VSLAM SYSTEM FOR REAL-TIME 3D MAPPING: FROM INDOOR AND OUTDOOR SPACES TO UNDERWATER ENVIRONMENTS
A MODULAR AND LOW-COST PORTABLE VSLAM SYSTEM FOR REAL-TIME 3D MAPPING: FROM INDOOR AND OUTDOOR SPACES TO UNDERWATER ENVIRONMENTS Open
The bond with computer vision and robotics is revolutionizing the traditional surveying approaches. Algorithms such as visual odometry and SLAM are embedded in surveying systems to make on-site and processing operations more efficient both…
View article: In-camera IMU angular data for orthophoto projection in underwater photogrammetry
In-camera IMU angular data for orthophoto projection in underwater photogrammetry Open
Among photogrammetric products, orthophotos are probably the most versatile and widely used in many fields of application. In the last years, coupled with the spread of semi-automated survey and processing approaches based on photogrammetr…
View article: A COMBINED APPROACH FOR LONG-TERM MONITORING OF BENTHOS IN ANTARCTICA WITH UNDERWATER PHOTOGRAMMETRY AND IMAGE UNDERSTANDING
A COMBINED APPROACH FOR LONG-TERM MONITORING OF BENTHOS IN ANTARCTICA WITH UNDERWATER PHOTOGRAMMETRY AND IMAGE UNDERSTANDING Open
Long-term monitoring projects are becoming more than ever crucial in assessing the effects of climate change on marine communities, especially in Antarctica, where these changes are expected to be particularly dramatic. Detailed studies of…
View article: AN EFFICIENT SOLUTION TO RAY TRACING PROBLEMS FOR HEMISPHERICAL REFRACTIVE INTERFACES
AN EFFICIENT SOLUTION TO RAY TRACING PROBLEMS FOR HEMISPHERICAL REFRACTIVE INTERFACES Open
Refraction effects, their description and modeling are important aspects of underwater and multimedia photogrammetry. For hemispherical interfaces, the usual approach to refraction is to rely on standard pinhole representations, e.g. by em…
View article: GOOD VIBRATIONS? HOW IMAGE STABILISATION INFLUENCES PHOTOGRAMMETRY
GOOD VIBRATIONS? HOW IMAGE STABILISATION INFLUENCES PHOTOGRAMMETRY Open
Image stabilisation (IS) is a family of approaches whose aim is to reduce motion blur in still images and shaking effect in video frames. A variety of techniques are currently implemented in cameras and camcorders: some involve hardware so…
View article: USING VIRTUAL OR AUGMENTED REALITY FOR THE TIME-BASED STUDY OF COMPLEX UNDERWATER ARCHAEOLOGICAL EXCAVATIONS
USING VIRTUAL OR AUGMENTED REALITY FOR THE TIME-BASED STUDY OF COMPLEX UNDERWATER ARCHAEOLOGICAL EXCAVATIONS Open
Cultural Heritage (CH) resources are partial, heterogeneous, discontinuous, and subject to ongoing updates and revisions. The use of semantic web technologies associated with 3D graphical tools is proposed to improve access, exploration, e…
View article: Underwater Survey for Oil and Gas Industry: A Review of Close Range Optical Methods
Underwater Survey for Oil and Gas Industry: A Review of Close Range Optical Methods Open
In both the industrial and scientific fields, the need for very high-resolution cartographic data is constantly increasing. With the aging of offshore subsea assets, it is very important to plan and maintain the longevity of structures, eq…