FIELD: physics.
SUBSTANCE: device perceives visible and infra-red light wave range, divides the light of the said ranges, so that a living body image based on the visible light waves is separated from blood vessel image based on the infra-red light wave range. Then a degree of position mismatch is detected on the basis of the living body image. This enables simultaneous survey object coverage without the need to optic system control processing, thus allowing to reduce computing load during image coverage.
EFFECT: higher reliability of identification.
8 cl
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