METHOD OF ADAPTIVE QUANTIZATION FOR ENCODING IRIS IMAGE Russian patent published in 2017 - IPC G06K9/00 

Abstract RU 2628201 C1

FIELD: physics.

SUBSTANCE: in the method, in the user device and in the machine-readable medium, a face image with the image of the user's eye is obtained; an iris image is segmented; the iris image is normalised and a basic mask is created. A set of complex numbers is obtained for the normalised iris image, each of which represents the gray intensity for the corresponding element of the normalized iris image. An iris code based on the normalized iris image is obtained, represented by a set of complex values, and the base mask is converted into a bit shape. The base mask is modified into the bit form by separate processing of the real and imaginary values of the set of complex numbers; the modified base mask is applied to the iris code; and the user is identified by the iris by matching the iris code to the reference iris code previously saved by the user.

EFFECT: improved accuracy and reliability of the iris identification.

11 cl, 10 dwg

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RU 2 628 201 C1

Authors

Korobkin Mikhail Vladimirovich

Eremeev Vladimir Alekseevich

Fartukov Aleksei Mikhailovich

Odinokikh Gleb Andreevich

Gnatyuk Vitaly Sergeevich

Danilevich Aleksei Bronislavovich

Shin Daekyu

Yoo Juwoan

Lee Kwanghyun

Lee Heejun

Dates

2017-08-15Published

2016-07-07Filed