PARAMETERS INFRARED BACKLIGHT INTEGRATED IN BIOMETRIC DEVICES
TO OBTAINING THE PATTERN OF THE BLOOD VESSELS

Sekretov Maksim Valentinovich, candidate of technical sciences, researcher, laboratory of biometric technology and neural network, Penza Research Electrotechnical Institute (9 Sovetskaya street, Penza, Russia), maxims7@mail.ru

57.087.1, 621.38, 612.11

Background. The object of research is the infrared radiation passing range, penetrating into the subcutaneous layer of human hands and absorbed by the blood. The subject of research are the ways of realization of infrared backlight surface of the palm of your hand as part of the biometric device, developed to obtain the pattern of the blood vessels located in the subcutaneous layer of the human hand. The purpose of work is to determine the optimum parameters of infrared backlight and calculation of its design to extract the features of the biometric pattern of the blood vessels of the human hand.
Materials and methods. For blood vessels palm images used black and white megapixel camera. Allocation pattern of blood vessels palm was carried out using methods of digital image processing.
Results. A realization of the integrated infrared backlight in biometric devices through the placement of the IR diodes with a wavelength of about 850 nm in a circle on the lens. Defined the optimum parameters of infrared backlight by calculating illumination the surface of the palm. Experiments confirmed that whenusing the infrared backlight becomes possible photographic images of subcutaneous blood vessels palm.
Conclusions. Placing the IR diodes in a circle on the lens allows you to make smallsized biometric device and the surface of the palm lighting uniform. By penetrating properties of the near infrared light is well distinguished structure of the blood vessels located in the subcutaneous layer of the human hand.

biometric, biometric device, palm blood vessels, infrared backlight, luminosity, light flow, sensitivity.