Prof. Dr. Jürgen Döllner


High-Quality Non-Planar Projections Using Real-time Piecewise Perspective Projections

Lorenz, Haik and Döllner, Jürgen
vol. 68 of Communications in Computer and Information Science, pages 45–58. Springer, 2010


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 the same optimal and consistent image quality GPUs deliver for perspective projections. It therefor renders the result directly without image resampling. In contrast to most 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 an analytic and a freely designed projection based on our method.

BibTeX file

author = { Lorenz, Haik and D{\"o}llner, J{\"u}rgen },
title = { High-Quality Non-Planar Projections Using Real-time Piecewise Perspective Projections },
booktitle = { Computer Vision, Imaging and Computer Graphics. Theory and Applications. International Joint Conference, VISIGRAPP 2009, Lisboa, Portugal, February 5-8, 2009. Revised Selected Papers },
pages = { 45--58 },
year = { 2010 },
editor = { Alpesh Kumar Ranchordas and Jo{\~a}o Madeiras Pereira and H{\'e}lder J. Ara{\'u}jo and Jo{\~a}o Manuel R. S. Tavares },
publisher = { Springer },
volume = { 68 },
series = { Communications in Computer and Information Science }

Copyright Notice

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

last change: Thu, 11 Nov 2010 14:01:43 +0100