Various diagnostic procedures in medicine, industry and defense produce 3-Dimensional data bases adequate to calculate a hologram. In most cases the nearer to real time the hologram can be produced the more beneficial. Since a hologram is a superposition of Fresnel zone plate patterns from each point source in the object volume on to the image plane a cellular array processor is suggested which will produce a factor of a million reduction in the time to calculate a hologram.
Howard L. Davidson,
Stephen S. Friedland,
"An Approach To Real Time Holography", Proc. SPIE 0437, Intl Conf on Computer-Generated Holography, (26 October 1983); doi: 10.1117/12.937127; https://doi.org/10.1117/12.937127