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Remote GPU-Accelerated Online Pre-processing of Raster Maps for Terrain Rendering

Westerteiger, Rolf and Chen, Fang and Gerndt, Andreas and Hamann, Bernd and Hagen, Hans (2012) Remote GPU-Accelerated Online Pre-processing of Raster Maps for Terrain Rendering. Virtuelle und Erweiterte Realitaet - 9. Workshop der GI-Fachgruppe VR/AR 2012, Duesseldorf, Germany.

Full text not available from this repository.

Abstract

We present a distributed architecture for accelerated pre-processing of remote sensing data for immediate terrain visualization. Interactive 3D visualization approaches for large terrain datasets employ level of detail techniques that require a multi-resolution data representation. The high computational cost of constructing these representations is often not viewed as a major drawback, as it is considered an o-line pre-processing step. This prevents the application of existing methods in the case of changing data, which is becoming increasingly important for a multitude of applications where datasets are being generated, transmitted and must be visualized immediately, such as in disaster management. Our system uses graphics processing units (GPUs) to accelerate the process of generating a multi-resolution representation, achieving sucient performance to enable on-line visualization on a front-end workstation communicating with a back-end cluster of machines equipped with GPUs. As a reference data structure, we use a quad tree decomposition of the so-called HEALPix sphere parameterization, which is well-suited for spherical terrain rendering. Our system correctly handles overlapping and unregistered mixed-resolution datasets. We demonstrate the ecacy of our approach by applying it to the surface of Mars using both the NASA Mars Orbiter Laser Altimeter and the ESA Mars Express High Resolution Stereo Camera datasets.

Item URL in elib:https://elib.dlr.de/80423/
Document Type:Conference or Workshop Item (Paper)
Title:Remote GPU-Accelerated Online Pre-processing of Raster Maps for Terrain Rendering
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Westerteiger, Rolfrolf.westerteiger (at) dlr.deUNSPECIFIED
Chen, Fangfang.chen (at) dlr.deUNSPECIFIED
Gerndt, Andreasandreas.gerndt (at) dlr.deUNSPECIFIED
Hamann, Berndhamann (at) cs.ucdavis.eduUNSPECIFIED
Hagen, Hanshagen (at) informatik.uni-kl.deUNSPECIFIED
Date:2012
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:terrain rendering preprocessing GPU CUDA
Event Title:Virtuelle und Erweiterte Realitaet - 9. Workshop der GI-Fachgruppe VR/AR 2012
Event Location:Duesseldorf, Germany
Event Type:Workshop
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Berlin-Adlershof , Braunschweig
Institutes and Institutions:Institut of Simulation and Software Technology
Institut of Simulation and Software Technology > Software for Space Systems and Interactive Visualisation
Institute of Planetary Research
Deposited By: Westerteiger, Rolf
Deposited On:08 Jan 2013 14:00
Last Modified:28 Feb 2013 15:55

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