Results 61 to 70 of about 55,134,654 (225)

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

, 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  

An Efficient and Robust Hybrid SfM Method for Large-Scale Scenes

Remote Sensing, 2023
The structure from motion (SfM) method has achieved great success in 3D sparse reconstruction, but it still faces serious challenges in large-scale scenes.
Zhendong Liu, Wenhu Qv, Haolin Cai, Hongliang Guan, Shuaizhe Zhang   +4 more
doaj   +1 more source

FLSea: Underwater Visual–Inertial and Stereovision Forward‐Looking Data Sets

Journal of Field Robotics, EarlyView.
ABSTRACT Visibility underwater is challenging and degrades as the distance between the subject and the camera increases. That is why forward‐looking underwater computer vision tasks are difficult. We have collected underwater forward‐looking stereovision and visual–inertial image sets using two underwater imaging platforms, a stereo camera rig, and an ...
Yelena Randall, Ori Lifschitz, Tali Treibitz   +2 more
wiley   +1 more source

ACCURACY OF 3D RECONSTRUCTION IN AN ILLUMINATION DOME [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
The accuracy of 3D surface reconstruction was compared from image sets of a Metric Test Object taken in an illumination dome by two methods: photometric stereo and improved structure-from-motion (SfM), using point cloud data from a 3D colour laser ...
L. MacDonald, I. Toschi, E. Nocerino, M. Hess, F. Remondino, S. Robson   +5 more
doaj   +1 more source

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

Journal 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, Meg Bishwakarma, Ujjwal Shrestha, Nils Rüther   +3 more
openaire   +1 more source

Efficient and Accurate Spatio‐Temporal Population Monitoring of Mobile Animals Using Drones and Computer Vision

Remote Sensing in Ecology and Conservation, EarlyView.
Drones and computer vision offer an efficient way to estimate animal populations over localized areas, but surveys often require stitching many overlapping images together. If animals move during the survey, traditional orthomosaic‐based counting methods become unreliable, with some animals appearing in multiple locations while others appear not at all,
Benjamin Koger, Albert B. Kao, Curry J. Cunningham, Thomas P. Quinn, Caroline Kittle, Andrew M. Berdahl   +5 more
wiley   +1 more source

Graph Rigidity for Near-Coplanar Structure from Motion [PDF]

, 2011
Recent algorithms for monocular motion capture (MoCap) estimate weak-perspective camera matrices between images using a small subset of approximately-rigid points on the human body (i.e. the torso and hip).
Upcroft, Ben, Lucey, Simon, Jack Valmadre, Ben Upcroft, Sridha Sridharan, Sridharan, Sridha, Valmadre, Jack, Simon Lucey   +7 more
core   +1 more source

Evaluating the Structure from Motion Technique for Measurement of Bed Morphology in Physical Model Studies [PDF]

, 2021
The selection of instrumentation for data acquisition in physical model studies depends on type and resolution of data to be recorded, time frame of the model study, available instrumentation alternatives, availability of skilled personnel and overall ...
Ruther, Nils, Ujjwal Shrestha, Bishwakarma, Meg Bahadur, Sanat Kumar Karmacharya, Meg Bahadur Bishwakarma, Nils Ruther, Shrestha, Usha, Karmacharya, Sanat Kumar   +7 more
core   +1 more source

Discovery and Fine‐Scale Mapping of Hadal Xenophyophore Habitat in the Nova Canton Trough, Central Pacific Ocean

Remote Sensing in Ecology and Conservation, EarlyView.
Discovery and fine‐scale mapping of a hadal xenophyophore field: submersible video transects and photogrammetry enable semi‐automated delineation of xenophyophores, revealing their abundance, spatial organisation, structural complexity and contribution to habitat heterogeneity at ~8000 m depth.
Denise J. B. Swanborn, Joana Gafeira, Megan Cundy, Daniel C. Bates, Heather A. Stewart, Alan J. Jamieson   +5 more
wiley   +1 more source

Combining the Stock Unearthing Method and Structure-from-Motion Photogrammetry for a Gapless Estimation of Soil Mobilisation in Vineyards

ISPRS International Journal of Geo-Information, 2018
In vineyards, especially on steep slopes like the Ruwer-Mosel Valley, Germany, soil erosion is a well-known environmental problem. Unfortunately, some enterprises and farmers are not aware of how much soil is being lost and the long-term negative impacts
Alexander Remke, Jesús Rodrigo-Comino, Yeboah Gyasi-Agyei, Artemi Cerdà, Johannes B. Ries   +4 more
doaj   +1 more source