Results 31 to 40 of about 54,994 (234)

Considerations for Achieving Cross-Platform Point Cloud Data Fusion across Different Dryland Ecosystem Structural States

open access: yesFrontiers in Plant Science, 2018
Remotely sensing recent growth, herbivory, or disturbance of herbaceous and woody vegetation in dryland ecosystems requires high spatial resolution and multi-temporal depth.
Tyson L. Swetnam   +6 more
doaj   +1 more source

The survey of the Basilica di Collemaggio in L’Aquila with a system of terrestrial imaging and most proven techniques [PDF]

open access: yes, 2017
The proposed job concerns the evaluation of a series of surveys carried out in the context of a campaign of studies begun in 2015 with the objective of comparing the accuracies obtainable with the systems of terrestrial imaging, compared to unmanned ...
Allegra, Massimo   +5 more
core   +2 more sources

A proposal of a new automated method for SfM/MVS 3D reconstruction through comparisons of 3D data by SfM/MVS and handheld laser scanners.

open access: yesPLoS ONE, 2022
SfM/MVS photogrammetry has received increasing attention due to its convenience, broadening the range of its applications into archaeology and anthropology.
Akihiro Kaneda   +4 more
doaj   +1 more source

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

open access: yes, 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   +19 more
core   +2 more sources

Non-destructive monitoring of annual trunk increments by terrestrial structure from motion photogrammetry.

open access: yesPLoS ONE, 2020
Annual trunk increments are essential for short-term analyses of the response of trees to various factors. For instance, based on annual trunk increments, it is possible to develop and calibrate forest growth models.
Martin Mokroš   +5 more
doaj   +1 more source

STUDY ON IMPROVEMENT OF ACCURACY IN INERTIAL PHOTOGRAMMETRY BY COMBINING IMAGES WITH INERTIAL MEASUREMENT UNIT [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Inertial photogrammetry is defined as photogrammetry that involves using a camera on which an inertial measurement unit (IMU) is mounted. In inertial photogrammetry, the position and inclination of a shooting camera are calculated using the IMU.
H. Kawasaki, S. Anzai, T. Koizumi
doaj   +1 more source

On-barn pig weight estimation based on body measurements by structure-from-motion (SfM) [PDF]

open access: yes, 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.
Guercini, Stefano   +5 more
core   +1 more source

The Influence of Flight Direction and Camera Orientation on the Quality Products of UAV-Based SfM-Photogrammetry

open access: yesApplied Sciences, 2022
Unmanned aerial vehicles (UAVs) can provide valuable spatial information products for many projects across a wide range of applications. One of the major challenges in this discipline is the quality of positioning accuracy of the resulting mapping ...
Shaker Ahmed   +3 more
semanticscholar   +1 more source

Monitoring ephemeral river changes during floods with SfM photogrammetry

open access: yesJournal of Iberian Geology, 2018
[ES]: Para llegar a comprender el comportamiento morfosedimentario de los ríos es necesario realizar un seguimiento detallado de los cambios topográficos que tienen lugar en sus cauces. Sin embargo, cuanto mayor es la resolución de la técnica utilizada para la reconstrucción topográfia, el coste y el tiempo necesario para cubrir una cierta superficie ...
Mikel Calle   +2 more
openaire   +2 more sources

Structure-from-Motion Using Historical Aerial Images to Analyse Changes in Glacier Surface Elevation

open access: yesRemote Sensing, 2017
The application of structure-from-motion (SfM) to generate digital terrain models (DTMs) derived from different image sources has strongly increased, the major reason for this being that processing is substantially easier with SfM than with conventional ...
Nico Mölg, Tobias Bolch
doaj   +1 more source

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