Результаты поиска по 'biometric system':
Найдено статей: 2
  1. Shulga O.A., Saakyan S.V., Skladnev D.A.
    A new biometric approach and efficient system for automatic detection and analysis of digital retinal images
    Computer Research and Modeling, 2010, v. 2, no. 2, pp. 189-197

    The program for automatic revealing of threshold values for characterizing physiological state of vessels and detection of early stages of retina pathology is offered. The algorithm is based on checking character of crossing sites of vessel images with the "mask" consisting of concentric circumferences (the first circumference is imposed directly on the sclera capsules of an optic nerve disk). The new method allows revealing of a network of blood vessels and flanking zones and detection of initial stage of pathological changes in a retina by digital images.

    Keywords: digital retina image, automatic image analysis, early stages of retina pathology.
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  2. Suvorov N.V., Shleymovich M.P.
    Mathematical model of the biometric iris recognition system
    Computer Research and Modeling, 2020, v. 12, no. 3, pp. 629-639

    Automatic recognition of personal identity by biometric features is based on unique peculiarities or characteristics of people. Biometric identification process consist in making of reference templates and comparison with new input data. Iris pattern recognition algorithms presents high accuracy and low identification errors percent on practice. Iris pattern advantages over other biometric features are determined by its high degree of freedom (nearly 249), excessive density of unique features and constancy. High recognition reliability level is very important because it provides search in big databases. Unlike one-to-one check mode that is applicable only to small calculation count it allows to work in one-to-many identification mode. Every biometric identification system appears to be probabilistic and qualitative characteristics description utilizes such parameters as: recognition accuracy, false acceptance rate and false rejection rate. These characteristics allows to compare identity recognition methods and asses the system performance under any circumstances. This article explains the mathematical model of iris pattern biometric identification and its characteristics. Besides, there are analyzed results of comparison of model and real recognition process. To make such analysis there was carried out the review of existing iris pattern recognition methods based on different unique features vector. The Python-based software package is described below. It builds-up probabilistic distributions and generates large test data sets. Such data sets can be also used to educate the identification decision making neural network. Furthermore, synergy algorithm of several iris pattern identification methods was suggested to increase qualitative characteristics of system in comparison with the use of each method separately.

    Keywords: biometric system, iris recognition, mathematical model, false acceptance rate (FAR), false rejection rate (FRR).

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