Results 81 to 90 of about 681,623 (204)
A Framework for Integrating and Managing Heterogeneous 3D Geospatial Data in Urban Digital Twins [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesUrban Digital Twins (UDT) require systematic integration of heterogeneous 3D geospatial data sources, but existing integration methods struggle with semantic information loss during fusion, geometric precision degradation through format conversions, and ...
J. Lonappan +3 more
doaj +1 more source
Mapping Global GNSS Vertical Velocities to Solid Earth Figure Change
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.Abstract The Earth's figure evolves in response to glacial isostatic adjustment (GIA), surface‐mass redistribution, and rotational and mantle‐driven processes. While temporal changes in the geoid's flattening are monitored through low‐degree gravity field harmonics, the geometric response of the solid Earth can be assessed independently from GNSS ...
C. Kotsakis
wiley +1 more source
Plane Delaunay triangulation [PDF]
, 2016 Delaunay triangulation is one of the fundamental data structures in computational geometry. In the thesis we present the planar Delaunay triangulation and describe its construction.
Števančec, Tadej
core +1 more source
General-Dimensional Constrained Delaunay and Constrained Regular Triangulations, I: Combinatorial Properties [PDF]
Discrete & Computational Geometry, 2007 The definition of Delaunay triangulation is too restrictive to comply with constraints such as discontinuity of boundary in objects rendering. In the two-dimensional case, several options are available. One can, for instance, augment the number of points and then construct the Delaunay triangulation of the enlarged vertex set, or relax the requirements
openaire +4 more sources
Dot Symbol Auto-Filling Method for Complex Areas Considering Shape Features
ISPRS International Journal of Geo-Information, 2019 Filling dot maps with a regular pattern is a key step in visual representation of land use data. The traditional methods cannot adapt well to shape features of complex areas, leading to an unreasonable symbol arrangement in the inner region and area ...
Yong Yin, Chengming Li, Pengda Wu
doaj +1 more source
ISPRS International Journal of Geo-InformationThe resolution of road graphic conflicts is a key aspect of map generalization, which involves both scale reduction and the symbolization of map features. This study proposes collaborative methods of road graphic conflict resolution considering different
Chuanbang Zheng +4 more
doaj +1 more source
ISPRS International Journal of Geo-Information, 2016 Updating topographic maps in multi-representation databases is crucial to a number of applications. An efficient way to update topographic maps is to propagate the updates from large-scale maps to small-scale maps.
Xinchang Zhang +3 more
doaj +1 more source
Construction Of The Constrained Delaunay Triangulation Of A Polygonal Domain
, 2008 A fast and easy to implement divide-and-conquer algorithm is presented for the construction of the Constrained Delaunay triangulation of a polygonal domain.
Reinhard Klein
core
WALKING - BASED DELAUNAY TRIANGULATION [PDF]
, 2013 V diplomskem delu najprej opravimo kratek pregled različnih pristopov za tvorjenje Delaunayeve triangulacije, nato pa se osredotočimo na algoritem gradnje triangulacije s korakanjem.
Pevec, Amadej
core
Generalizing the Convex Hull of a Sample: The R Package alphahull [PDF]
This paper presents the R package alphahull which implements the ñ-convex hull and the ñ-shape of a finite set of points in the plane. These geometric structures provide an informative overview of the shape and properties of the point set. Unlike the
Alberto Rodríguez-Casal +1 more
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