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Iris positioning method and iris identification system

An iris positioning and iris technology, applied in the field of biometric identification, can solve the problems of slow positioning speed and insufficient accuracy, and achieve the effects of improving speed, shortening time-consuming, and saving a lot of time.

Inactive Publication Date: 2010-12-15
SHENZHEN UNIV
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AI Technical Summary

Problems solved by technology

[0009] However, in the existing technology, the positioning algorithm used in the preprocessing stage generally has the problems of slow positioning speed and insufficient accuracy.

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  • Iris positioning method and iris identification system
  • Iris positioning method and iris identification system

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Embodiment Construction

[0065] An iris positioning method and an iris recognition system provided by the present invention, in order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0066] Such as figure 1 Shown is the functional block diagram of the iris recognition system 10 of the present invention, which includes an iris image acquisition module 11, an iris image preprocessing module 12, a feature design and encoding module 13, a pattern matching module 15, and an iris database 14 connected in sequence. Wherein, the iris image acquisition module 11 is used to acquire human eye images captured from the head of the human body through an image acquisition system (such as a cam...

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Abstract

The invention relates to the technical field of biometric identification and discloses an iris positioning method and an iris identification system. The method and the system are based on mathematical morphology, Radon transform, canny operator and hough transform. The algorithm comprises the positioning of an inner edge and an outer edge, wherein in the positioning of the inner edge, based on a gray projection method of line detection, a binarized image is processed by using the principle of the mathematical morphology so as to remove the interference of noise; and in the positioning of the outer edge, an iris image is processed by using the principle of the mathematical morphology at first, then an upper eyelid and a lower eyelid are detected by the Radon transform to remove the interference, and finally, an edge is extracted by a canny algorithm and the external edge of the iris is detected by the hough transform. Therefore, large area blind searching can be avoided so as to improve positioning speed.

Description

technical field [0001] The invention relates to the technical field of biological identification, in particular to an iris positioning method and an iris identification system. Background technique [0002] The biological characteristics used for identification include two aspects: physiological characteristics and behavioral characteristics. Physiological characteristics include hand shape, fingerprint, face shape, iris, retina, pulse, auricle, etc., and behavioral characteristics include signature, voice, and key pressure. Based on the above features, various biometric technologies such as fingerprint recognition, face recognition, speech recognition, signature recognition and iris recognition have been developed. [0003] Iris identification technology is an emerging biometric technology in recent years. Compared with the biological characteristics used by various biometric identification technologies in the past, the application of iris to biometric identification has t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
Inventor 王娜王运金李霞
Owner SHENZHEN UNIV
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