Lightweight iris recognition system for mobile terminal

Abstract

The invention discloses a lightweight iris recognition system for a mobile terminal. The system comprises a preprocessing module for performing smoothing processing, lens detection and white hole filling on an iris image captured by an infrared camera; an iris positioning module used for carrying out coarse positioning and accurate positioning on the iris image, obtaining a circle center and a radius of a pupil through coarse positioning, obtaining inner and outer boundary points of an iris through accurate positioning, realizing iris region normalization through fitting a circle by the boundary points, and recording the position of noise by adopting a mask; a coding module used for coding the iris image, carrying out feature extraction on the normalized iris area by adopting a Gabor filter to obtain a feature map, and selecting a point at a specified position in the feature map for coding; a registration and recognition module used for registering the iris image, binding iris codes, masks and registrant information and storing the iris codes, the masks and the registrant information in a database, and used for recognizing the iris image. The system solves the problems of low irisrecognition precision and large resource consumption of the mobile terminal.

Description

technical field [0001] The invention belongs to the field of biometric feature recognition, and specifically designs and proposes a mobile terminal-oriented lightweight iris recognition system based on the combination of a calculus operator based on a gray gradient and an edge point search based on a gray difference. Background technique [0002] The informatization of society is developing more and more rapidly. While improving the quality of human life, it is also constantly infringing on people's privacy. More and more people need a safe and reliable way to protect their information. The traditional form of user passwords has been difficult to meet the needs, and human identification has become an increasingly important and challenging task. Currently the most attention-grabbing identification method is biometric identification. Compared with other traditional identification methods, the biological characteristics of the human body are difficult to be stolen, and it is ...

AI Technical Summary

Problems solved by technology

[0006] The present invention overcomes the problem of large consumption of high-precision identification resources in the existing iris identification technology, and provides an iris positioning method and system based on the combination of coarse positioning and precise positioning, which is easy to transplant and has strong scalability

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