Results 31 to 40 of about 441,395 (317)

A Web-Based Geoinformation System for Heritage Management and Geovisualisation in Cantón Nabón (Ecuador)

open access: yesISPRS International Journal of Geo-Information, 2021
Since ancient times, human beings have been interested in knowing their environment in order to make the right decisions in territorial management. The spatial component is a feature of great importance in the assets that surround us.
Angel Collado   +3 more
doaj   +1 more source

Investigations on the Geometric Accuracy of the NavVis VLX 2 and VLX 3 Systems for the Use in Indoor Applications [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Mobile mapping technology from NavVis GmbH enables buildings and interiors to be captured quickly and accurately, creating digital twins. At HafenCity University (HCU) Hamburg, the NavVis VLX 2 and VLX 3 were used to test an interior recording system and
T. P. Kersten, M. Marsmann
doaj   +1 more source

MERGING PHOTOGRAMMETRY AND AUGMENTED REALITY: THE CANADIAN LIBRARY OF PARLIAMENT [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
In recent years, Augmented Reality (AR) technology has experienced considerable progress and the combination of AR and 3D modeling opens up new opportunities regarding 3D data visualization and interaction.
B. Carrión-Ruiz   +4 more
doaj   +1 more source

GEOMATICS DOCUMENTATION TECHNIQUES AS MONITORING TOOLS FOR RURAL BUILT HERITAGE IN NABÓN (ECUADOR) [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
Since 2008, the Ecuadorian Constitution gave all the rights and responsibilities to the municipalities to preserve and enhance their cultural and natural heritage.
A. Collado   +6 more
doaj   +1 more source

An Integrated GNSS/INS/LiDAR-SLAM Positioning Method for Highly Accurate Forest Stem Mapping

open access: yesRemote Sensing, 2016
Forest mapping, one of the main components of performing a forest inventory, is an important driving force in the development of laser scanning. Mobile laser scanning (MLS), in which laser scanners are installed on moving platforms, has been studied as a
Chuang Qian   +9 more
doaj   +1 more source

Adaptive laser range scanning

open access: yes2008 American Control Conference, 2008
We present an approach to laser range scanning in which quality metrics are used to automatically reduce the number of measurements acquired from a scanner viewpoint. As part of this approach we present improved versions of the orientation and reflectivity quality metrics, as well as introduce two quality metrics: resolvability and planarity.
MacKinnon, David   +2 more
openaire   +2 more sources

Laser Scanning and the Continuous Wavelet Transform for Flatness Control [PDF]

open access: yes, 2015
Current methods for surface flatness control in construction are based on sparse measurements and therefore may lead to inaccurate and imprecise results.
B. Biotteau   +5 more
core   +1 more source

The Accuracy Comparison of Three Simultaneous Localization and Mapping (SLAM)-Based Indoor Mapping Technologies

open access: yesSensors, 2018
The growing interest and the market for indoor Location Based Service (LBS) have been drivers for a huge demand for building data and reconstructing and updating of indoor maps in recent years.
Yuwei Chen   +12 more
doaj   +1 more source

Optical coherence tomography and scanning laser ophthalmoscopy: Approaches to dual-channel retinal tissue imaging [PDF]

open access: yes, 2014
We report a Talbot bands-based optical coherence tomography (OCT) system capable of producing longitudinal B-scan OCT images and en-face scanning laser ophthalmoscopy (SLO) images of the human retina in-vivo, with various degrees of ...
Adrian Bradu   +5 more
core   +1 more source

Self-calibration of terrestrial laser scanners: selection of the best geometric additional parameters [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
Systematic errors are present in laser scanning system observations due to manufacturer imperfections, wearing over time, vibrations, changing environmental conditions and, last but not least, involuntary hits.
J. L. Lerma, D. García-San-Miguel
doaj   +1 more source

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