Results 31 to 40 of about 7,708 (206)

Underwater Mapping in Shallow Coastal Waters Using MBES and Photogrammetry: Applications in Archaeology and Marine Habitat Monitoring [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
This study explores the combined use of Multibeam Echosounder (MBES) and Structure-from-Motion (SfM) photogrammetry for high-resolution underwater mapping in shallow coastal environments.
S. Poglajen, M. Poklar
doaj   +1 more source

Geometric documentation of underwater archaeological sites

open access: yesGeoinformatics FCE CTU, 2013
Photogrammetry has often been the most preferable method for the geometric documentation of monuments, especially in cases of highly complex objects, of high accuracy and quality requirements and, of course, budget, time or accessibility limitations ...
Eleni Diamanti   +2 more
doaj   +1 more source

CAMERA CONSTANT IN THE CASE OF TWO MEDIA PHOTOGRAMMETRY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
Refraction is the main cause of geometric distortions in the case of two media photogrammetry. However, this effect cannot be compensated and corrected by a suitable camera calibration procedure (Georgopoulos and Agrafiotis, 2012). In addition, according
P. Agrafiotis, A. Georgopoulos
doaj   +1 more source

Triangular 3D Laser Scanning in Underwater Photogrammetry [PDF]

open access: yesPolish Hyperbaric Research, 2015
Abstract The use of triangular 3D laser scanning may significantly enhance the visual inspection of underwater objects. In these days of high demand for accurate information, exclusively photographic documentation is not enough, as it is geometrically flawed. The authors of this article are trying to present the rudiments
Aleksander Wojtowicz, Konrad Stolarczyk
openaire   +1 more source

Mapping and classification of ecologically sensitive marine habitats using unmanned aerial vehicle (UAV) imagery and object-based image analysis (OBIA) [PDF]

open access: yes, 2018
Nowadays, emerging technologies, such as long-range transmitters, increasingly miniaturized components for positioning, and enhanced imaging sensors, have led to an upsurge in the availability of new ecological applications for remote sensing based on ...
Ardizzone, Domenico   +4 more
core   +1 more source

UNDERWATER PHOTOGRAMMETRY AND 3D RECONSTRUCTION OF MARBLE CARGOS SHIPWRECK [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
Abstract. Nowadays archaeological and architectural surveys are based on the acquisition and processing of point clouds, allowing a high metric precision, essential prerequisite for a good documentation. Digital image processing and laser scanner have changed the archaeological survey campaign, from manual and direct survey to a digital one and ...
Balletti, Caterina   +4 more
openaire   +5 more sources

UNDERWATER PHOTOGRAMMETRY, CODED TARGET AND PLENOPTIC TECHNOLOGY: A SET OF TOOLS FOR MONITORING RED CORAL IN MEDITERRANEAN SEA IN THE FRAMEWORK OF THE ”PERFECT” PROJECT [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
PErfECT "Photogrammetry, gEnetic, Ecology for red coral ConservaTion" is a project leaded by the Laboratoire des Sciences de lInformation et des Systmes (LSIS - UMR 7296 CNRS) from the Aix-Marseille University (France) in collaboration with the Spanish ...
P. Drap   +7 more
doaj   +1 more source

Virtual Exploration of Underwater Archaeological Sites : Visualization and Interaction in Mixed Reality Environments [PDF]

open access: yes, 2008
This paper describes the ongoing developments in Photogrammetry and Mixed Reality for the Venus European project (Virtual ExploratioN of Underwater Sites, http://www.venus-project.eu).
Bale, Kim   +6 more
core   +3 more sources

Seasonal Growth Rate of the Sponge Haliclona oculata (Demospongiae: Haplosclerida) [PDF]

open access: yes, 2008
The interest in sponges has increased rapidly since the discovery of potential new pharmaceutical compounds produced by many sponges. A good method to produce these compounds by using aquaculture of sponges is not yet available, because there is ...
Marieke Koopmans   +29 more
core   +2 more sources

ACCURATE SCALING AND LEVELLING IN UNDERWATER PHOTOGRAMMETRY WITH A PRESSURE SENSOR [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
Abstract. Photogrammetry needs known geometric elements to provide metric traceable measurements. These known elements can be a distance between two three-dimensional object points or two camera stations, or a combination of known coordinates and/or angles to solve the seven degrees of freedom that lead to rank deficiency of the normal-equation matrix.
F. Menna   +4 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy