Results 1 to 10 of about 395,408 (279)
Measurement of Rock Joint Surfaces by Using Smartphone Structure from Motion (SfM) Photogrammetry [PDF]
Sensors, 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 ...
Pengju An +4 more
doaj +2 more sources
Structure-From-Motion in 3D Space Using 2D Lidars [PDF]
Sensors, 2017 This paper presents a novel structure-from-motion methodology using 2D lidars (Light Detection And Ranging). In 3D space, 2D lidars do not provide sufficient information for pose estimation.
Dong-Geol Choi +4 more
doaj +2 more sources
Workshop on 3D mapping of habitats and biological communities with underwater photogrammetry [PDF]
Research Ideas and Outcomes, 2023 For the past decades, photogrammetry has been increasingly used for monitoring spatial arrangement or temporal dynamics of submerged man-made structures and natural systems.
Loïc Van Audenhaege +10 more
doaj +3 more sources
Using 3D models to quantify aboveground biomass in the cushion-forming species Plantago rigida in an Andean páramo peatland [PDF]
Mires and Peat, 2023 Peatlands dominated by cushion-forming species have been recognised for their high rates of soil carbon storage, along with their crucial importance in local pastoral systems, and in water supply and regulation, in the tropical and subtropical Andes ...
Ricardo Jaramillo +4 more
doaj +1 more source
Structure from motion: A tolerance analysis [PDF]
Perception & Psychophysics, 1996 We present a tolerance analysis that is applicable to a large group of stimuli used in structure-from-motion tasks. Human performance in structure-from-motion tasks reflects the fact that the visual system deals with projections of a 3-D world on the retina. A tolerance analysis reveals the relationship between the projections and the 3-D world.
Hogervorst, M.A. +2 more
openaire +5 more sources
LiDAR-enhanced Structure-from-Motion [PDF]
2020 IEEE International Conference on Robotics and Automation (ICRA), 2020 6 pages plus reference.
Zhen, Weikun +3 more
openaire +2 more sources
Semantic Structure from Motion for Railroad Bridges Using Deep Learning
Applied Sciences, 2021 Current maintenance practices consume significant time, cost, and manpower. Thus, a new technique for maintenance is required. Construction information technologies, including building information modeling (BIM), have recently been applied to the field ...
Gun Park, Jae Hyuk Lee, Hyungchul Yoon
doaj +1 more source
RGBD Infant Head Reconstruction for Cranial Vault Asymmetry Estimation
IEEE Access, 2022 We present an RGBD infant head reconstruction method with a mobile phone depth sensor on a novel dataset. Acquiring 3D models from infants enables many important medical tasks such as automatic cranial asymmetry classification for plagiocephaly therapy ...
Samuel Zeitvogel +4 more
doaj +1 more source
Non-sequential structure from motion [PDF]
2011 IEEE International Conference on Computer Vision Workshops (ICCV Workshops), 2011 Prior work on multi-view structure from motion is dominated by sequential approaches starting from a single two-view reconstruction, then adding new images one by one. In contrast, we propose a non-sequential methodology based on rotational consistency and robust estimation using convex optimization. The resulting system is more robust with respect to (
Enqvist, Olof +2 more
openaire +3 more sources
ANTHROPOMETRIC MEASUREMENT BASED ON STRUCTURE FROM MOTION IMAGING TECHNIQUE
Приборы и методы измерений, 2016 The aim of this work was to estimate limitations related of the actual resolution of images taken into the object reconstruction procedure (using Structure from Motion method) applied for anthropometric measurements. This is necessary to define technical
S. Paśko, M. Sutkowski
doaj +1 more source