Results 71 to 80 of about 24,425 (182)

Automated 3D reconstruction of rural buildings from Structure-from-Motion (SFM) photogrammetry approach

open access: yesEngineering for Rural Development, 2018
n ...
Pezzuolo, Andrea   +3 more
openaire   +3 more sources

fMRI correlates of subjective reversals in ambiguous structure-from-motion [PDF]

open access: yes, 2012
We used fMRI to examine the neural correlates of subjective reversals for bistable structure-from-motion. We compared transparent random-dot kinematograms depicting either a cylinder rotating in depth or two flat surfaces translating in opposite ...
Driver, J., Freeman, E. D., Sterzer, P.
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

Short communication: Challenges and applications of structure-from-motion photogrammetry in a physical model of a braided river [PDF]

open access: yesEarth Surface Dynamics, 2019
For extending the applications of structure-from-motion (SfM) photogrammetry in river flumes, we present the main challenges and methods used to collect a large dataset (>1000 digital elevation models, DEMs) of high-quality topographic data using ...
P. Leduc, S. Peirce, P. Ashmore
doaj   +1 more source

Lifting GIS Maps into Strong Geometric Context for Scene Understanding

open access: yes, 2016
Contextual information can have a substantial impact on the performance of visual tasks such as semantic segmentation, object detection, and geometric estimation.
Díaz, Raúl   +3 more
core   +1 more source

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

THE TRIPLET MEASURED BY AERIAL CAMERA USING LINE SEGMENTS LINE MATCHING-BASED RELATIVE ORIENTATION USING TRIPLET CAMERA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
In urgent observations after disasters, we can mention that the image matching processing is an essential technique to establish more stable and rapid 3D data generation. Particularly, multi-images taken from various viewpoints are useful in the disaster
S. Tanaka, M. Nakagawa
doaj   +1 more source

Divergent mechanisms of perceptual reversals in spinning and wobbling structure-from-motion stimuli.

open access: yesPLoS ONE
This study explores the visual phenomenon of random dot structure-from-motion (SFM), where the brain perceives 3D shapes from the coordinated 2D motion of dots.
Leo Poom
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

Visual working memory contents bias ambiguous structure from motion perception [PDF]

open access: yes, 2013
The way we perceive the visual world depends crucially on the state of the observer. In the present study we show that what we are holding in working memory (WM) can bias the way we perceive ambiguous structure from motion stimuli.
Gegenfurtner, Karl R.   +3 more
core   +2 more sources

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