filename     : Zie06a.pdf
entry        : Sketch
pages        : 108
year         : 2006
month        : August
title        : A Framework for Holographic Scene Representation and Image Synthesis
subtitle     :
author       : R. Ziegler, P. Kaufmann, M. Gross
booktitle    : SIGGRAPH '06: ACM SIGGRAPH 2006 Sketches
ISSN/ISBN    : 1-59593-364-6
editor       :
publisher    : ACM Press
publ.place   : Boston, Massachusetts
volume       :
issue        :
language     : english
keywords     : 
abstract     : Traditionally, graphics objects or scenes have been represented through geometry and appearance. Most often, geometry is described by primitives such as triangles, points, basis functions, and others, while appearance is encoded in texture maps. Due to the difficulty of representing some real-world objects, such as fur, hair, or trees, with traditional techniques, research has also focused on image based rendering using light-fields, lumigraphs, reflectance fields, sprites, and other models. In all these graphics representations the treatment of light is motivated through ray optics, and rendering involves projection and rasterization, or ray tracing.

To the best of our knowledge, we present the first system using a hologram as a rendering primitive for a conventional, framebuffer-oriented graphics pipeline. Such holograms are elegant structures capturing the phase and amplitude of an object or scene wavefront as seen from all possible views through a window of given aperture. The major differences with lightfields, are the intrinsic wave optics that handle anti-aliasing implicitly, and the ability to reproduce object depth through phase. Thus, holograms overcome some of the inherent limitations of image based methods including defocus and compositing with conventional graphics scenes.