Results 51 to 60 of about 55,134,575 (221)

Structure-from-Motion based vegetation modeling and shade estimation

open access: yes, 2015
Although three-dimensional (3-D) light dimension and range (LiDAR) point cloud datasets describing the structure of vegetation have proven to be highly useful for ecological modeling, the collection of such data is expensive.
James Nathaniel Balcomb (22014101)
core   +1 more source

Incremental Structure from Motion for Small-Scale Scenes Based on Auxiliary Calibration

open access: yesSensors
Scarce feature points are a critical limitation affecting the accuracy and stability of incremental structure from motion (SfM) in small-scale scenes. In this paper, we propose an incremental SfM method for small-scale scenes, combined with an auxiliary ...
Sixu Li   +4 more
doaj   +1 more source

Ground volume assessment using ’Structure from Motion’ photogrammetry with a smartphone and a compact camera

open access: yesOpen Geosciences, 2017
The article describes how the Structure-from-Motion (SfM) method can be used to calculate the volume of anthropogenic microtopography. In the proposed workflow, data is obtained using mass-market devices such as a compact camera (Canon G9) and a ...
Wróżyński Rafał   +4 more
doaj   +1 more source

Eroding Confidence in Gully Location Risk Prediction in Mine Pit Rehabilitation

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Understanding how rehabilitation measures, such as landform shaping, and surface finishes impact gully erosion risk could assist in designing less erosive rehabilitation. In this study we use high resolution digital elevation models of rehabilitated mine pits to explore risk factors for gully formation.
Eve McCallum   +4 more
wiley   +1 more source

MP-SfM: Monocular Surface Priors for Robust Structure-From-Motion

open access: yes2025 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
While Structure-from-Motion (SfM) has seen much progress over the years, state-of-the-art systems are prone to failure when facing extreme viewpoint changes in low-overlap, low-parallax or high-symmetry scenarios. Because capturing images that avoid these pitfalls is challenging, this severely limits the wider use of SfM, especially by non-expert users.
Zador Pataki   +3 more
openaire   +3 more sources

Structure from motion (SFM) photogrammetry vs terrestrial laser scanning [PDF]

open access: yes, 2016
Structure from Motion (SfM) has its roots in the well-established spatial measurement method of photogrammetry, but is becoming increasingly recognised as a means to capture dense 3D data to represent real-world objects, both natural and man- made.
Simon Buckley (7179293)   +1 more
core   +3 more sources

Machine Learning Vegetation Filtering of Coastal Cliff and Bluff Point Clouds

open access: yesRemote Sensing
Coastal cliffs erode in response to short- and long-term environmental changes, but predicting these changes continues to be a challenge. In addition to a chronic lack of data on the cliff face, vegetation presence and growth can bias our erosion ...
Phillipe Alan Wernette
doaj   +1 more source

Application of ‘Structure from Motion’ (SfM) technique in physical hydraulic modelling

open access: yesJournal of Physics: Conference Series, 2019
Abstract There are many methods available for measurement of bed morphology in physical hydraulic model studies considering mobile bed sediment. Among which, there are sophisticated instrumentations which provide quality results in shorter time but are vastly expensive and requires special training for execution. Whereas the conventional
Sanat Kumar Karmacharya   +3 more
openaire   +1 more source

THE APPLICATION OF SMARTPHONE BASED STRUCTURE FROM MOTION (SFM) PHOTOGRAMMETRY IN GROUND VOLUME MEASUREMENT

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
Abstract. The purpose of this research study is to assess the potential using smartphone camera captured images for 3D model reconstruction by using Structure from Motion (SFM) photogrammetry technique, specifically in term of volumetric measurement. In past, the volumetric measurement of surface or object is by using Imaging Station or by professional
E. H. Heng Siong   +2 more
openaire   +3 more sources

SfM-TTR: Using Structure from Motion for Test-Time Refinement of Single-View Depth Networks [PDF]

open access: yes, 2023
Estimating a dense depth map from a single view is geometrically ill-posed, and state-of-the-art methods rely on learning depth's relation with visual appearance using deep neural networks.
Civera, Javier, Izquierdo, Sergio
core  

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