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Simulation of Hard Shadows on Large Spherical Terrains

Aslandere, Turgay and Flatken, Markus and Gerndt, Andreas (2016) Simulation of Hard Shadows on Large Spherical Terrains. 3D Research, 7 (4). Springer. doi: 10.1007/s13319-016-0105-8. ISSN 2092-6731.

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Official URL: http://link.springer.com/article/10.1007/s13319-016-0105-8


Real-time rendering of high precision shadows using digital terrain models as input data is a challenging task. Especially when interactivity is targeted and Level of Detail (LoD) data structures are utilized to tackle huge amount of data. In this paper, we present a real-time rendering approach for the computation of hard shadows using large scale digital terrain data obtained by satellite imagery. Our approach is based on an extended horizon mapping algorithm that avoids costly pre-computations and ensures high accuracy. This algorithm is further developed to handle large data. The proposed algorithms take the surface curvature of the large spherical bodies into account during the computation. The performance issues are discussed and the results are presented. The generated images can be exploited in 3D research and aerospace related areas.

Item URL in elib:https://elib.dlr.de/109370/
Document Type:Article
Title:Simulation of Hard Shadows on Large Spherical Terrains
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Flatken, Markusmarkus.flatken (at) dlr.deUNSPECIFIED
Gerndt, Andreasandreas.gerndt (at) dlr.deUNSPECIFIED
Date:December 2016
Journal or Publication Title:3D Research
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1007/s13319-016-0105-8
Keywords:Computer graphics, Horizon Mapping, Large Scale Terrain
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Projekt ATON (old), R - Vorhaben SISTEC (old)
Location: Braunschweig
Institutes and Institutions:Institut of Simulation and Software Technology > Software for Space Systems and Interactive Visualisation
Deposited By: Gerndt, Dr.rer.nat. Andreas
Deposited On:20 Dec 2016 12:57
Last Modified:23 Jul 2022 13:44

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