The present invention relates to a genetic algorithm / simulated annealing algorithm (GA / SA) synthesis filter for optical pattern recognition and a control method thereof. By implementing a GA / SA algorithm for combining optical pattern recognition, In addition, it is possible to obtain an improved correlation characteristic even under the condition of the optical filter. By using the phase filter in several stages, in particular, eight phases, it is possible to eliminate the problem of the inverse phase appearing in the phase of the binary filter, And also has a merit that it exhibits high efficiency even though the number of iterations required for encoding by each algorithm is reduced.
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