Results 21 to 30 of about 57,904,552 (254)

FUSION OF MULTI-RESOLUTION DIGITAL SURFACE MODELS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Abstract. This paper proposes an algorithm for fusing digital surface models (DSM) obtained by heterogenous sensors. Based upon prior confidence knowledge, each DSM can be weighted locally adaptively and therefore strengthen or lessen its influence on the fused result.
Kuschk, Georg, d'Angelo, Pablo
openaire   +3 more sources

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   +3 more sources

Digital Surface Model Interpolation Based on 3D Mesh Models [PDF]

open access: yesRemote Sensing, 2018
A digital surface model (DSM) is an important geospatial infrastructure used in various fields. In this paper, we deal with how to improve the quality of DSMs generated from stereo image matching. During stereo image matching, there are outliers due to mismatches, and non-matching regions due to match failure.
Soohyeon Kim, Sooahm Rhee, Taejung Kim
openaire   +2 more sources

Stereo Digital Particle Image Velocimetry Investigation of a Free Surface Mixing Layer [PDF]

open access: yes, 2005
Shear flows in the vicinity of a free surface are a problem with numerous applications, perhaps the most obvious being the wakes of seagoing surface vessels.
Dooley, Bradley Scott
core   +1 more source

diFUME Digital Surface Model V0.2

open access: yes, 2022
Description: Digital Surface Model (V0.2) of Basel for diFUME project. Terrain model (DTM) is calculated from the height model of the Basel-Stadt official survey (http://www.gva.bs.ch).
Stagakis, Stavros   +1 more
core   +1 more source

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.
Boesch, R., Ginzler, C.
openaire   +4 more sources

A technique of digital surface model generation [PDF]

open access: yesGeo-spatial Information Science, 2001
It is usually a time-consuming process to real-time set up 3D digital surface model(DSM) of an object with complex surface. On the basis of the architectural survey project of “Chilin Nunnery Reconstruction”, this paper investigates an easy and feasible way, that is, on project site, applying digital close range photogrammetry and CAD technique to ...
Zhu Yixuan, Xu Miaozhong
openaire   +1 more source

Sap flow modelling based on global radiation and canopy parameters derived from a digital surface model

open access: yes, 2023
Sap flow represents water transport from roots to leaves through the xylem and is used to describe tree transpiration. This paper proposed and tested a procedure to estimate sap flow by calculating global radiation in a digital model of the tree canopy ...
Tomáš Mikita   +2 more
core   +1 more source

Surface reflection model estimation from naturally illuminated image sequences [PDF]

open access: yes, 1997
This thesis addresses the problem of estimating the surface reflection model of objects observed in a terrestrial scene, illuminated by natural illumination; that is, a scene which is illuminated by sun and sky light alone.
Love, Robert Charles
core   +6 more sources

Vertical accuracy assessment of open access digital elevation models: Bucaramanga-Colombia case study

open access: yesGeodesy and Cartography, 2022
Digital Elevation Models (DEMs), are fundamental data that allow to represent topographic information continuously. They are widely used in various applications such as geoscience, and in the graphical representation of the landscape surface ...
Jhonathan Aponte Saravia
doaj   +1 more source

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