Results 31 to 40 of about 1,513,863 (295)

The Creation of Space Vector Models of Buildings From RPAS Photogrammetry Data

open access: yesSlovak Journal of Civil Engineering, 2017
The results of Remote Piloted Aircraft System (RPAS) photogrammetry are digital surface models and orthophotos. The main problem of the digital surface models obtained is that buildings are not perpendicular and the shape of roofs is deformed.
Trhan Ondrej
doaj   +1 more source

Accuracy Assessment of Different Digital Surface Models [PDF]

open access: yesISPRS International Journal of Geo-Information, 2018
Digital elevation models (DEMs), which can occur in the form of digital surface models (DSMs) or digital terrain models (DTMs), are widely used as important geospatial information sources for various remote sensing applications, including the precise orthorectification of high-resolution satellite images, 3D spatial analyses, multi-criteria decision ...
Ugur Alganci, Baris Besol, Elif Sertel
openaire   +2 more sources

Improving Intertidal Reef Mapping Using UAV Surface, Red Edge, and Near-Infrared Data

open access: yesDrones, 2019
Coastal living reefs provide considerable services from tropical to temperate systems. Threatened by global ocean-climate and local anthropogenic changes, reefs require spatially explicit management at the submeter scale, where socioecological processes ...
Antoine Collin   +3 more
doaj   +1 more source

Application of RUSLE model for estimating soil erosion in Gaza strip in Palestine using geographic information system [PDF]

open access: yesمجلة جامعة النجاح للأبحاث العلوم الطبيعية, 2020
The study aimed to calculate the amount of soil erosion in Gaza Strip and identify areas of most exposed to soil erosion risk to take appropriate measures.
Basim Almughari
doaj   +1 more source

Sugarcane canopy detection using high spatial resolution UAS images and digital surface model

open access: yesEngineering and Applied Science Research, 2019
The use of an unmanned aerial system (UAS) equipped with multispectral cameras is a potential approach to acquire canopy reflectance to make various correlations with desired crop parameters. However, the acquired reflectance data are mixed with unwanted
Chanreaksa Chea   +4 more
doaj   +1 more source

Mechanical identification of layer-specific properties of mouse carotid arteries using 3D-DIC and a hyperelastic anisotropic constitutive model [PDF]

open access: yes, 2011
The role of mechanics is known to be of primary order in many arterial diseases; however, determining mechanical properties of arteries remains a challenge.
Finlay HM   +8 more
core   +7 more sources

MERGING DIGITAL SURFACE MODELS IMPLEMENTING BAYESIAN APPROACHES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Abstract. In this research different DSMs from different sources have been merged. The merging is based on a probabilistic model using a Bayesian Approach. The implemented data have been sourced from very high resolution satellite imagery sensors (e.g. WorldView-1 and Pleiades).
H. Sadeq, J. Drummond, Z. Li
openaire   +3 more sources

INTEGRATION OF HETEROGENOUS DIGITAL SURFACE MODELS

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Abstract. The application of extended digital surface models often reveals, that despite an acceptable global accuracy for a given dataset, the local accuracy of the model can vary in a wide range. For high resolution applications which cover the spatial extent of a whole country, this can be a major drawback.
R. Boesch, C. Ginzler
openaire   +3 more sources

Airborne photogrammetry and LIDAR for DSM extraction and 3D change detection over an urban area : a comparative study [PDF]

open access: yes, 2013
A digital surface model (DSM) extracted from stereoscopic aerial images, acquired in March 2000, is compared with a DSM derived from airborne light detection and ranging (lidar) data collected in July 2009.
De Maeyer, Philippe   +4 more
core   +1 more source

Correlate Mapping of Impervious Surfaces as Flood Risk Assessment Strategy in Owerri, Southeastern Nigeria [PDF]

open access: yes, 2017
Owerri is rapidly growing in population and built environment, with corresponding, high increase in pavements or paved surfaces. This study explores the integrated approach of Remote Sensing (RS) and Geographic Information systems (GIS) techniques in ...
Anayo D. Udeh   +4 more
core   +3 more sources

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