filename     : ZIE08a.pdf
entry        : article
conference   : Eurographics 2008, Crete, Greece, 14-18 April 2008
pages        : 211-220
year         : 2008
month        : April
title        : Lighting and Occlusion in a Wave-Based Framework
subtitle     :
author       : Remo Ziegler, Simone Croci, Markus Gross
booktitle    : Computer Graphics Forum (Proceedings of Eurographics 2008)
ISSN/ISBN    : 0167-7055
editor       : D. Cohen-Or and P. Slavik
publisher    : The Eurographics Association and Blackwell Publishing 2008
publ.place   : Oxford, UK
volume       : 27
issue        : 2
language     : english
keywords     : Holography, Lighting, Wave-based Occlusion
abstract     : We present novel methods to enhance Computer Generated Holography (CGH) by introducing a complex-valued wave-based occlusion handling method. This offers a very intuitive and efficient interface to introduce optical elements featuring physically-based light interaction exhibiting depth-of-field, diffraction, and glare effects. Fur-thermore, an efficient and flexible evaluation of lit objects on a full-parallax hologram leads to more convincing images. Previous illumination methods for CGH are not able to change the illumination settings of rendered holo-grams. In this paper we propose a novel method for real-time lighting of rendered holograms in order to change the appearance of a previously captured holographic scene. These functionalities are features of a bigger wave-based rendering framework which can be combined with 2D framebuffer graphics. We present an algorithm which uses graphics hardware to accelerate the rendering.