Results 31 to 40 of about 24,425 (182)

High spatial resolution underwater data for mapping seagrass transplantation: A powerful tool for visualization and analysis

Data in Brief, 2022
These datasets derived from our mapping protocol are presented as a research article in the Journal of Environmental Management [1]. In particular, by using a Structure from Motion photogrammetric workflow we produced high spatial resolution 2D raster ...
Daniele Ventura, Luca Castoro, Gianluca Mancini, Edoardo Casoli, Daniela Silvia Pace, Andrea Belluscio, Giandomenico Ardizzone   +6 more
doaj   +1 more source

Sedimentological characterization of Antarctic moraines using UAVs and Structure-from-Motion photogrammetry [PDF]

, 2015
In glacial environments particle-size analysis of moraines provides insights into clast origin, transport history, depositional mechanism and processes of reworking.
Matthew J. Westoby, Stuart A. Dunning, John Woodward, Andrew S. Hein, Shasta M. Marrero, Kate Winter, David E. Sugden, Hodge, Dugdale, Friedman, Furukawa, Detert, Detert, Agisoft, McLaren, Pitkänen, Adams, Fuller, Fehr, Kääb   +19 more
core   +2 more sources

Comparing Forest Structural Attributes Derived from UAV-Based Point Clouds with Conventional Forest Inventories in the Dry Chaco

Remote Sensing, 2020
Anthropogenic activity leading to forest structural and functional changes needs specific ecological indicators and monitoring techniques. Since decades, forest structure, composition, biomass, and functioning have been studied with ground-based forest ...
Beatriz Gobbi, Anton Van Rompaey, Dante Loto, Ignacio Gasparri, Veerle Vanacker   +4 more
doaj   +1 more source

Multi-light photogrammetric survey applied to the complex documentation of engravings in Palaeolithic rock art: the Cova de les Meravelles (Gandia, Valencia, Spain)

Heritage Science, 2022
The new phase of study and revision of the Palaeolithic art of the Cova de les Meravelles, as well as the advances made in the field of 3D documentation in recent years, have motivated a new documentation campaign on the main panel full of tiny engraved ...
Ana Cantó, José Luis Lerma, Rafael Martínez Valle, Valentín Villaverde   +3 more
doaj   +1 more source

Unmanned Aerial Vehicle-Based Structure from Motion Technique for Precise Snow Depth Retrieval—Implication for Optimal Ground Control Point Deployment Strategy

Remote Sensing, 2023
Unmanned aerial vehicle (UAV)-based snow depth is mapped as the difference between snow-on and snow-off digital surface models (DSMs), which are derived using the structure from motion (SfM) technique with ground control points (GCPs).
Song Shu, Ok-Youn Yu, Chris Schoonover, Hongxing Liu, Bo Yang   +4 more
doaj   +1 more source

Rotation Free Active Vision [PDF]

, 2015
International audience— Incremental Structure from Motion (SfM) algorithms require, in general, precise knowledge of the camera linear and angular velocities in the camera frame for estimating the 3D structure of the scene.
Mezouar, Youcef, Robuffo Giordano, Paolo, Tahri, Omar   +2 more
core   +2 more sources

Quantifying the Influence of Surface Texture and Shape on Structure from Motion 3D Reconstructions

Sensors, 2022
In general, optical methods for geometrical measurements are influenced by the surface properties of the examined object. In Structure from Motion (SfM), local variations in surface color or topography are necessary for detecting feature points for point-
Mikkel Schou Nielsen, Ivan Nikolov, Emil Krog Kruse, Jørgen Garnæs, Claus Brøndgaard Madsen   +4 more
doaj   +1 more source

Light3R-SfM: Towards Feed-forward Structure-from-Motion

2025 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
We present Light3R-SfM, a feed-forward, end-to-end learnable framework for efficient large-scale Structure-from-Motion (SfM) from unconstrained image collections. Unlike existing SfM solutions that rely on costly matching and global optimization to achieve accurate 3D reconstructions, Light3R-SfM addresses this limitation through a novel latent global ...
Sven Elflein, Qunjie Zhou, Laura Leal-Taixé   +2 more
openaire   +3 more sources

Mapping Wild Leek through the Forest Canopy Using a UAV

Remote Sensing, 2018
Wild leek, an endangered plant species of Eastern North America, grows on forest floors and greens up to approximately three weeks before the trees it is typically found under, temporarily allowing it to be observed through the canopy by remote sensing ...
Marie-Bé Leduc, Anders J. Knudby
doaj   +1 more source

Integrating a UAV-Derived DEM in Object-Based Image Analysis Increases Habitat Classification Accuracy on Coral Reefs

Remote Sensing, 2022
Very shallow coral reefs (
Brian O. Nieuwenhuis, Fabio Marchese, Marco Casartelli, Andrea Sabino, Sancia E. T. van der Meij, Francesca Benzoni   +5 more
doaj   +1 more source