Holographic video system using Fourier transform and data reduction

A holographic video system, displaying Fourier-transform-based computer-gen erated hologram (CGH) data is described. A Fourier-transform-based horizont al-parallax-only (HPO) CGH is basically a two-dimensional hologram. To expa nd a Fourier-transform-based HPO CGH, a new algorithm based on the ray trac ing of a three-dimensional object is used. This algorithm can I educe the a mount of data and calculation time of the CGH. The result of this algorithm is applied to a pulsed-laser holographic video system for reconstruction o f a three-dimensional object, The experimental results are included; they s how a good parallax image and illustrate the possibility of reducing the am ount of data and calculation time of the CGH. An additional advantage of th is system over the Fresnel hologram CGH is described as well.