Results 31 to 40 of about 395,408 (279)

How Much Can We See from a UAV-Mounted Regular Camera? Remote Sensing-Based Estimation of Forest Attributes in South American Native Forests

Remote Sensing, 2021
Data collection from large areas of native forests poses a challenge. The present study aims at assessing the use of UAV for forest inventory on native forests in Southern Chile, and seeks to retrieve both stand and tree level attributes from forest ...
Alejandro Miranda, Germán Catalán, Adison Altamirano, Carlos Zamorano-Elgueta, Manuel Cavieres, Javier Guerra, Blas Mola-Yudego   +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

Classifying Sparse Vegetation in a Proglacial Valley Using UAV Imagery and Random Forest Algorithm

Remote Sensing, 2022
Extreme hydro-meteorological events become an increasing risk in high mountain environments, resulting in erosion events that endanger human infrastructure and life.
Ulrich Zangerl, Stefan Haselberger, Sabine Kraushaar   +2 more
doaj   +1 more source

Reducing “Structure from Motion”: a general framework for dynamic vision. 1. Modeling [PDF]

, 1998
The literature on recursive estimation of structure and motion from monocular image sequences comprises a large number of apparently unrelated models and estimation techniques.
Perona, Pietro, Soatto, Stefano
core   +1 more source

3-D Reconstruction of Rock Samples via Structure-From-Motion for Virtual Reality Applications: A Methodological Proposal

Geosciences, 2022
This article presents a methodological proposal for the three-dimensional reconstruction of rock samples via structure-from-motion. The presented methodological steps aimed to provide a reproducible workflow to create virtual rock samples to be applied ...
Leonardo Campos Inocencio, Maurício Roberto Veronez, Luiz Gonzaga da Silveira, Francisco Manoel Wohnrath Tognoli, Laís Vieira de Souza, Juliano Bonato, Jaqueline Lopes Diniz   +6 more
doaj   +1 more source

Visual working memory contents bias ambiguous structure from motion perception [PDF]

, 2013
The way we perceive the visual world depends crucially on the state of the observer. In the present study we show that what we are holding in working memory (WM) can bias the way we perceive ambiguous structure from motion stimuli.
Gegenfurtner, Karl R., Scocchia, Lisa, Triesch, Jochen, Valsecchi, Matteo   +3 more
core   +2 more sources

Structure from Articulated Motion: Accurate and Stable Monocular 3D Reconstruction without Training Data

Sensors, 2019
Recovery of articulated 3D structure from 2D observations is a challenging computer vision problem with many applications. Current learning-based approaches achieve state-of-the-art accuracy on public benchmarks but are restricted to specific types of ...
Onorina Kovalenko, Vladislav Golyanik, Jameel Malik, Ahmed Elhayek, Didier Stricker   +4 more
doaj   +1 more source

Underwater 3D Reconstruction from Video or Still Imagery: Matisse and 3DMetrics Processing and Exploitation Software

Journal of Marine Science and Engineering, 2023
This paper addresses the lack of “push-button” software for optical marine imaging, which currently limits the use of photogrammetric approaches by a wider community.
Aurélien Arnaubec, Maxime Ferrera, Javier Escartín, Marjolaine Matabos, Nuno Gracias, Jan Opderbecke   +5 more
doaj   +1 more source

Perceptual Biases in the Interpretation of Non-Rigid Shape Transformations from Motion

Vision
Most existing research on the perception of 3D shape from motion has focused on rigidly moving objects. However, many natural objects deform non-rigidly, leading to image motion with no rigid interpretation.
Ryne Choi, Jacob Feldman, Manish Singh
doaj   +1 more source

Estimating Mangrove Forest Volume Using Terrestrial Laser Scanning and UAV-Derived Structure-from-Motion

Drones, 2019
Mangroves provide a variety of ecosystem services, which can be related to their structural complexity and ability to store carbon in the above ground biomass (AGB).
Angus D. Warfield, Javier X. Leon
doaj   +1 more source