REAL-TIME PIECEWISE PERSPECTIVE PROJECTIONS

Haik Lorenz, Jürgen Döllner

Abstract

This paper presents an approach to real-time rendering of non-planar projections with a single center and straight projection rays. Its goal is to provide optimal and consistent image quality. It operates entirely in object space to remove the need for image resampling. In contrast to most other object-space approaches, it does not evaluate non-linear functions on the GPU, but approximates the projection itself by a set of perspective projection pieces. Within each piece, graphics hardware can provide optimal image quality. The result is a coherent and crisp rendering. Procedural textures and stylization effects greatly benefit from our method as they usually rely on screen-space operations. The real-time implementation runs entirely on GPU. It replicates input primitives on demand and renders them into all relevant projection pieces. The method is independent of the input mesh density and is not restricted to static meshes. Thus, it is well suited for interactive applications. We demonstrate it for an analytic and a freely designed projection.

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Paper Citation


in Harvard Style

Lorenz H. and Döllner J. (2009). REAL-TIME PIECEWISE PERSPECTIVE PROJECTIONS . In Proceedings of the Fourth International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2009) ISBN 978-989-8111-67-8, pages 147-155. DOI: 10.5220/0001786401470155


in Bibtex Style

@conference{grapp09,
author={Haik Lorenz and Jürgen Döllner},
title={REAL-TIME PIECEWISE PERSPECTIVE PROJECTIONS},
booktitle={Proceedings of the Fourth International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2009)},
year={2009},
pages={147-155},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001786401470155},
isbn={978-989-8111-67-8},
}


in EndNote Style

TY - CONF
JO - Proceedings of the Fourth International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2009)
TI - REAL-TIME PIECEWISE PERSPECTIVE PROJECTIONS
SN - 978-989-8111-67-8
AU - Lorenz H.
AU - Döllner J.
PY - 2009
SP - 147
EP - 155
DO - 10.5220/0001786401470155