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A Real-Time Physically Based Algorithm for Hard Shadows on Dynamic Height-Fields

Aslandere, Turgay and Flatken, Markus and Gerndt, Andreas (2015) A Real-Time Physically Based Algorithm for Hard Shadows on Dynamic Height-Fields. In: Virtuelle und Erweiterte Realität, pp. 101-112. Aachen Verlag. Virtuelle und Erweiterte Realität, 12. Workshop der GI-Fachgruppe, 10-11 Sep 2015, Bonn. ISBN 978-3-8440-3868-2. ISSN 9-783844-030549.

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Bump maps are commonly used in computer graphics to visualize bumps and wrinkles on the surface of an object, more specifically, in height-field rendering. In order to render shadows for large terrain data using bump maps, various methods such as horizon mapping have been suggested. A horizon map describes the occlusion of terrain data by using angles with respect to a view point. In this paper, we propose a method exploiting ideas from horizon mapping to generate real time shadows for large terrain data. We only consider a single azimuth direction per height-field point to compute the shadows. The generated horizon map is computed in real time and allows for interactive exploration of the terrain. We demonstrate that our method produces accurate results while keeping the memory requirements low

Item URL in elib:https://elib.dlr.de/101497/
Document Type:Conference or Workshop Item (Speech)
Title:A Real-Time Physically Based Algorithm for Hard Shadows on Dynamic Height-Fields
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Aslandere, TurgayTurgay.Aslandere (at) dlr.deUNSPECIFIED
Flatken, Markusmarkus.flatken (at) dlr.deUNSPECIFIED
Gerndt, Andreasandreas.gerndt (at) dlr.deUNSPECIFIED
Date:September 2015
Journal or Publication Title:Virtuelle und Erweiterte Realität
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 101-112
Publisher:Aachen Verlag
Keywords:Height-Field Rendering, Horizon Mapping, Bump Mapping
Event Title:Virtuelle und Erweiterte Realität, 12. Workshop der GI-Fachgruppe
Event Location:Bonn
Event Type:Workshop
Event Dates:10-11 Sep 2015
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)
Location: Braunschweig
Institutes and Institutions:Institut of Simulation and Software Technology > Software for Space Systems and Interactive Visualisation
Deposited By: Aslandere, MSc Turgay Isik
Deposited On:22 Dec 2015 13:45
Last Modified:31 Jul 2019 19:59

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