Interactive Editing of GigaSample Terrain Fields
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Date
2012
Authors
Treib, Marc
Reichl, Florian
Auer, Stefan
Westermann, Rüdiger
Reichl, Florian
Auer, Stefan
Westermann, Rüdiger
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association and John Wiley and Sons Ltd.
Abstract
Previous terrain rendering approaches have addressed the aspect of data compression and fast decoding for rendering, but applications where the terrain is repeatedly modified and needs to be buffered on disk have not been considered so far. Such applications require both decoding and encoding to be faster than disk transfer. We present a novel approach for editing gigasample terrain fields at interactive rates and high quality. To achieve high decoding and encoding throughput, we employ a compression scheme for height and pixel maps based on a sparse wavelet representation. On recent GPUs it can encode and decode up to 270 and 730 MPix/s of color data, respectively, at compression rates and quality superior to JPEG, and it achieves more than twice these rates for lossless height field compression. The construction and rendering of a height field triangulation is avoided by using GPU ray-casting directly on the regular grid underlying the compression scheme. We show the efficiency of our method for interactive editing and continuous level-of-detail rendering of terrain fields comprised of several hundreds of gigasamples.
Description
@article{10.1111:j.1467-8659.2012.03017.x,
journal = {Computer Graphics Forum},
title = {{Interactive Editing of GigaSample Terrain Fields}},
author = {Treib, Marc and Reichl, Florian and Auer, Stefan and Westermann, Rüdiger},
year = {2012},
publisher = {The Eurographics Association and John Wiley and Sons Ltd.},
ISSN = {1467-8659},
DOI = {10.1111/j.1467-8659.2012.03017.x}
}