Results 11 to 20 of about 3,721 (173)
Microscopic Structure from Motion (SfM) for Microscale 3D Surface Reconstruction. [PDF]
Sensors (Basel), 2020 In microscale photogrammetry, the confocal microscopic imaging technique has been the dominant trend. Unlike the confocal imaging mostly for transparent objects, we propose a novel method to construct a 3D shape in microscale for various micro-sized ...
Um D, Lee S.
europepmc +6 more sources
Measurement of Rock Joint Surfaces by Using Smartphone Structure from Motion (SfM) Photogrammetry. [PDF]
Sensors (Basel), 2021 The measurement of rock joint surfaces is essential for the estimation of the shear strength of the rock discontinuities in rock engineering. Commonly used techniques for the acquisition of the morphology of the surfaces, such as profilometers and laser ...
An P, Fang K, Jiang Q, Zhang H, Zhang Y.
europepmc +5 more sources
On-Barn Pig Weight Estimation Based on Body Measurements by Structure-from-Motion (SfM). [PDF]
Sensors (Basel), 2018 Information on the body shape of pigs is a key indicator to monitor their performance and health and to control or predict their market weight. Manual measurements are among the most common ways to obtain an indication of animal growth. However, this approach is laborious and difficult, and it may be stressful for both the pigs and the stockman.
Pezzuolo A +5 more
europepmc +4 more sources
Dynamics of visual reversals from ambiguous spinning biological-motion and rigid structure-from-motion. [PDF]
IperceptionThree-dimensional rigid structure-from-motion (SFM) and structure from nonrigid biological point-light motion stimuli are perceptually ambiguous. This study investigated the dynamics of perceived reversals in two cases: a spinning point-light walker (PLW)
Poom L.
europepmc +2 more sources
ISPRS International Journal of Geo-Information, 2021 Thanks to sensor developments, unmanned aircraft system (UAS) are the most promising modern technologies used to collect imagery datasets that can be utilized to develop agricultural applications in these days. UAS imagery datasets can grow exponentially
Anjin Chang +5 more
doaj +1 more source
A Comparative Analysis of Unmanned Aircraft Systems in Low Altitude Photogrammetric Surveys
Remote Sensing, 2022 Comparing photogrammetric performances of four user-grade unmanned aircraft systems (UAS) is the main aim of this paper. This study investigates what is the more suitable UAS for specific applications considering the required scale factor, such as for ...
Francesco Mugnai, Grazia Tucci
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Quick bathymetry mapping of a Roman archaeological site using RTK UAS-based photogrammetry
Frontiers in Earth Science, 2023 Recent technological advances are leading numerous researchers and professional users to the adoption of photogrammetric products for a wide range of geoscientific applications.
Davide Mazza +6 more
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Evaluation of the Efficiency of SfM-Photogrammetry in Obtaining DEM from Google Earth Images [PDF]
JES: Journal of Engineering Sciences, 2023 In this study, we seek to evaluate the efficiency of SfM Photogrammetry in obtaining Digital Elevation Model (DEM) from the free Google Earth browser, by simulating the aerial photography of the terrain displayed by this browser, calculating the ...
Ahmed A Elashiry, Omar Al Khalil
doaj +1 more source
Multistage SFM: Revisiting Incremental Structure from Motion [PDF]
2014 2nd International Conference on 3D Vision, 2014 In this paper, we present a new multistage approach for SfM reconstruction of a single component. Our method begins with building a coarse 3D reconstruction using high-scale features of given images. This step uses only a fraction of features and is fast.
Rajvi Shah +2 more
openaire +1 more source
Agronomy, 2021 In viticulture, information about vine vigour is a key input for decision-making in connection with production targets. Pruning weight (PW), a quantitative variable used as indicator of vegetative vigour, is associated with the quantity and quality of ...
Marta García-Fernández +3 more
doaj +1 more source