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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
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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
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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
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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
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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
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Critical motions in euclidean structure from motion [PDF]
Proceedings. 1999 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (Cat. No PR00149), 2003 We investigate the motions that lead to ambiguous Euclidean scene reconstructions under several common calibration constraints, giving a complete description of such critical motions for: (i) internally calibrated orthographic and perspective cameras; (ii) in two images, for cameras with unknown focal lengths, either different or equal.
Kahl, Fredrik, Triggs, Bill
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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
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Street View Motion-from-Structure-from-Motion [PDF]
2013 IEEE International Conference on Computer Vision, 2013 We describe a structure-from-motion framework that handles "generalized" cameras, such as moving rolling-shutter cameras, and works at an unprecedented scale-billions of images covering millions of linear kilometers of roads-by exploiting a good relative pose prior along vehicle paths.
Bryan Klingner +2 more
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Learning Structure-from-Motion from Motion [PDF]
, 2019 This work is based on a questioning of the quality metrics used by deep neural networks performing depth prediction from a single image, and then of the usability of recently published works on unsupervised learning of depth from videos. To overcome their limitations, we propose to learn in the same unsupervised manner a depth map inference system from
Pinard, Clément +3 more
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LiDAR-enhanced Structure-from-Motion [PDF]
2020 IEEE International Conference on Robotics and Automation (ICRA), 2020 6 pages plus reference.
Zhen, Weikun +3 more
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