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Simulation of Hard Shadows on Large Spherical Terrains

Simulation of Hard Shadows on Large Spherical Terrains T. Aslandere (&)  M. Flatken  A. Gerndt Keywords Computer graphics  Horizon mapping German Aerospace Center (DLR), 38108 Braunschweig, Large scale terrain Germany e-mail: turgay.aslandere@dlr.de 123 28 Page 2 of 12 3D Res (2016) 7:28 1 Introduction example of this [14]. This project aims to develop an optical navigation system for an autonomous landing on Shadows are an important visual effect in terrain the Moon surface exploiting the shadows of the Moon rendering applications. It is an intuitive cue when craters [9]. The main motivation of the work depicted in estimating shape and height of geological features of this paper is to provide a fast and precise shadow casting the terrains and significantly increases the realism of the algorithm to aerospace related projects such as the ATON rendered scenery. In order to render hard shadows on project. Therefore, it focuses on rendering hard shadows large terrains, such as the Moon, digital models are on Moon-like spherical celestial bodies without a signif- employed. These are made of height-fields which are icant atmosphere in a software environment. also called data elevation models (DEM). A complete Previously, Aslandere et al. [2] have introduced the digital model of a celestial body http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png 3D Research Springer Journals

Simulation of Hard Shadows on Large Spherical Terrains

Aslandere, Turgay; Flatken, Markus; Gerndt, Andreas
3D Research , Volume 7 (4) – Sep 27, 2016
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References (23)

Publisher
Springer Journals
Copyright
Copyright © 2016 by 3D Research Center, Kwangwoon University and Springer-Verlag Berlin Heidelberg
Subject
Engineering; Signal,Image and Speech Processing; Computer Imaging, Vision, Pattern Recognition and Graphics; Optics, Lasers, Photonics, Optical Devices
eISSN
2092-6731
DOI
10.1007/s13319-016-0105-8
Publisher site
See Article on Publisher Site

Abstract

T. Aslandere (&)  M. Flatken  A. Gerndt Keywords Computer graphics  Horizon mapping German Aerospace Center (DLR), 38108 Braunschweig, Large scale terrain Germany e-mail: turgay.aslandere@dlr.de 123 28 Page 2 of 12 3D Res (2016) 7:28 1 Introduction example of this [14]. This project aims to develop an optical navigation system for an autonomous landing on Shadows are an important visual effect in terrain the Moon surface exploiting the shadows of the Moon rendering applications. It is an intuitive cue when craters [9]. The main motivation of the work depicted in estimating shape and height of geological features of this paper is to provide a fast and precise shadow casting the terrains and significantly increases the realism of the algorithm to aerospace related projects such as the ATON rendered scenery. In order to render hard shadows on project. Therefore, it focuses on rendering hard shadows large terrains, such as the Moon, digital models are on Moon-like spherical celestial bodies without a signif- employed. These are made of height-fields which are icant atmosphere in a software environment. also called data elevation models (DEM). A complete Previously, Aslandere et al. [2] have introduced the digital model of a celestial body

Journal

3D Research – Springer Journals

Published: Sep 27, 2016

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