Abstract
View-reconstruction and display is an important part of many applications
in digital holography such as computer vision and microscopy. Thus far, this
has been an offline procedure for megapixel sized holograms. This paper introduces
an implementation of real-time view-reconstruction using programmable graphics
hardware. The theory of Fresnel-based view-reconstruction is introduced, after
which an implementation using stream programming is presented. Two different
fast Fourier transform (FFT)-based reconstruction methods are implemented,
as well as two different FFT strategies. The efficiency of the methods is
evaluated and compared to a CPU-based implementation, providing over 100 times
speedup for a hologram size of 2048$\times$2048.
© 2009 IEEE
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