FIELD: images recognition technology.
SUBSTANCE: block for describing optical image measures light radiation at discontinuous angular positions of slit being present in rotating filter of space frequencies, mounted in focal plane of Fourier lens, in plane of which a spectrum of Fourier transformation is formed for space frequencies of image. Measurement of light radiation by means of small photo-detector matrix is facilitated by dividing beam containing filtered light radiation spectrum, and projecting divided beam onto two detector matrices displaced relatively to one another and superimposed onto one another.
EFFECT: higher efficiency.
5 cl, 16 dwg
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