Results 21 to 30 of about 3,721 (173)

Quantifying Tufa Growth Rates (TGRs) using Structure-from-Motion (SfM) Photogrammetry

Proceedings of the 6th International Conference on Geographical Information Systems Theory, Applications and Management, 2020
The production of high-quality digital surface models (DSMs) is an increasing interest throughout the various geomorphometry studies. Consequently, a wide range of advanced geospatial methods has been used at different scales. Despite the fact that Structure-from-Motion (SfM) photogrammetry is one of the most popular methods until now it has not been ...
Marić, Ivan, Šiljeg, Ante, Cukrov, Neven, Domazetović, Fran   +3 more
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SfM with MRFs: Discrete-Continuous Optimization for Large-Scale Structure from Motion [PDF]

IEEE Transactions on Pattern Analysis and Machine Intelligence, 2013
Recent work in structure from motion (SfM) has built 3D models from large collections of images downloaded from the Internet. Many approaches to this problem use incremental algorithms that solve progressively larger bundle adjustment problems. These incremental techniques scale poorly as the image collection grows, and can suffer from drift or local ...
David J, Crandall, Andrew, Owens, Noah, Snavely, Daniel P, Huttenlocher   +3 more
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Identifying mechanisms of shore platform erosion using Structure‐from‐Motion (SfM) photogrammetry [PDF]

Earth Surface Processes and Landforms, 2019
AbstractShore platforms control wave energy transformation which, in turn, controls energy delivery to the cliff toe and nearshore sediment transport. Insight into shore platform erosion rates has conventionally been constrained at millimetre‐scales using micro‐erosion metres, and at metre‐scales using cartographic data.
Zuzanna M. Swirad, Nick J. Rosser, Matthew J. Brain   +2 more
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Mapping Glacier Ablation With a UAV in the North Cascades: A Structure-from-Motion Approach

Frontiers in Remote Sensing, 2022
The glaciers of the North Cascades have experienced mass loss and terminus retreat due to climate change. The meltwater from these glaciers provides a flux of cold glacier meltwater into the river systems, which supports salmon spawning during the late ...
Shannon M. Healy, Alia L. Khan
doaj   +1 more source

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

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

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

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 ...
Elflein, Sven, Zhou, Qunjie, Agostinho, Sérgio, Leal-Taixé, Laura   +3 more
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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

Structure from Motion (SFM) como ferramenta de reconstrução tridimensional para edificações históricas

Revista de Gestão e Secretariado (Management and Administrative Professional Review), 2023
Com o advento da tecnologia e das técnicas computacionais é possível obter a representação de edifícios históricos de forma tridimensional e derivar outros produtos que podem ser utilizados em análises, estudos, simulações ou mesmo constituir dados de entrada para outros aspectos, como o BIM (Building Information Modeling).
Cesar Francisco De Paula, Jorge Pimentel Cintra, Vânia de Oliveira Borges, Reni Aparecido Norberto Pinto, Alessandro de Castro Borges, Lo-Ruana Karen Amorim Sanjulião, Maria José Reis, José da Silva Ferreira Junior, Fernanda Medeiros Dutra Reis   +8 more
openaire   +2 more sources