Results 11 to 20 of about 3,408,938 (300)

ON THE STANDARDIZATION OF VERTICAL ACCURACY FIGURES IN DEMS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
Digital Elevation Models (DEMs) play a key role in hydrological risk prevention and mitigation: hydraulic numeric simulations, slope and aspect maps all heavily rely on DEMs.
V. Casella, B. Padova
doaj   +5 more sources

A note on methods for vertical accuracy assessment of DEMs

open access: yesGeografia (Londrina), 2017
This study investigates the vertical accuracy of a DEMs interpolated from 1:50,000 contours with universal kriging (UK) using DEMs interpolated from 1:10,000 contours as the independent source of higher accuracy following the geospatial accuracy ...
Marvin E. Quesada, Matthew Marsik
doaj   +5 more sources

Impact of Digital Panoramic Radiograph Magnification on Vertical Measurement Accuracy [PDF]

open access: yesInternational Journal of Dentistry, 2015
Objectives. The purpose of this panoramic radiography study was to assess the impact of image magnification on the accuracy of vertical measurements in the posterior mandible. Methods.
Marc El Hage   +3 more
doaj   +5 more sources

Accuracy of linear vertical measurements in posterior mandible on panoramic view

open access: yesDental Research Journal, 2013
Background: One of the most frequent concerns encountered in dental implant treatments is inadequate pre-operative planning. Panoramic radiographs are readily accessible and cost efficient.
Abdolaziz Haghnegahdar, Pegah Bronoosh
doaj   +3 more sources

Vertical axis non-linearities in wavelength scanning interferometry [PDF]

open access: yes, 2015
The uncertainty of measurements made on an areal surface topography instrument is directly influenced by its metrological characteristics. In this work, the vertical axis deviation from linearity of a wavelength scanning interferometer is evaluated.
Muhamedsalih, Hussam   +6 more
core   +3 more sources

Precision and accuracy of the subjective haptic vertical in the roll plane [PDF]

open access: yesBMC Neuroscience, 2010
Abstract Background When roll-tilted, the subjective visual vertical (SVV) deviates up to 40° from earth-vertical and trial-to-trial variability increases with head roll. Imperfections in the central processing of visual information were postulated to explain these roll-angle dependent errors.
Schuler, J R   +3 more
openaire   +5 more sources

Kinematic GPR-TPS Model for Infrastructure Asset Identification with High 3D Georeference Accuracy Developed in a Real Urban Test Field

open access: yesRemote Sensing, 2019
This paper describes in detail the development of a ground-penetrating radar (GPR) model for the acquisition, processing and visualisation of underground utility infrastructure (UUI) in a controlled environment.
Nikolaj Šarlah   +4 more
doaj   +1 more source

Inundation Exposure Assessment for Majuro Atoll, Republic of the Marshall Islands Using A High-Accuracy Digital Elevation Model

open access: yesRemote Sensing, 2020
Majuro Atoll in the central Pacific has high coastal vulnerability due to low-lying islands, rising sea level, high wave events, eroding shorelines, a dense population center, and limited freshwater resources.
Dean Gesch   +6 more
doaj   +1 more source

Evaluation of LiDAR vertical accuracy in Delaware's tidal salt marshes

open access: yes, 2020
McKenna, Thomas E.Accurate elevation data of tidal salt marshes is necessary for understanding how marshes will respond to future environmental conditions.
Medlock, Catherine
core   +1 more source

The New Landsat Collection-2 Digital Elevation Model

open access: yesRemote Sensing, 2020
The Landsat Collection-2 distribution introduces a new global Digital Elevation Model (DEM) for scene orthorectification. The new global DEM is a composite of the latest and most accurate freely available DEM sources and will include reprocessed Shuttle ...
Shannon Franks   +2 more
doaj   +1 more source

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