In this work, we describe a special software developed to interpret computer instructions codified as information binary
pages; which are stored as Fourier holograms in a LiNbO3:Fe photorefractive crystal. The crystal has stored a computer
sequence program, as a spatial distribution of Fourier holograms. To read each computer instructions, the position of the
crystal is changed by an electro-mechanical setup. The holograms output images of each information binary page are
captured over sampled as an image by a CCD camera in the output plane. Due to the spatial displacement of the crystal,
the hologram output images are not focused on the same output plane. Therefore, we obtained a set of defocused
captured images; which might produces a miss interpretation of the corresponding instructions. We solve this problem
by pre-processing the image before decoding it, the proposed software solves the focusing problem with the
implementation of a digital spatial filter and some special criteria expressed as a mathematical algorithm. After that, the
program decodes each computer instructions from its information binary page to be executed as an electronic digital
sequential system.
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