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Abstract:
The holographic visualization of three-dimensional object geometry still
represents a major challenge in computational holography research. Besides the
development of suitable holographic display devices, the fast calculation of the
hologram's interference pattern for complex-shaped three-dimensional objects is
an important pre-requisite of any interactive holographic display system. We
present a fast method for rendering full-parallax holograms using a standard PC
with a consumer-market graphics card. To calculate the hologram of a 3D
object, scaled and translated versions of the interference pattern of simple
primitives, e.g. point sources, are superimposed. The
hologram is built up completely
on-board the graphics card.
To avoid numerical inaccuracies due to limited
frame-buffer resolution, we use a hierarchical approach.
Using an NVidia
Geforce4 graphics card, the proposed
algorithm takes 1.0 second to calculate the 512x512-pixel hologram of 1024
primitives.
