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An iris positioning method for iris recognition in long-distance traveling

A technology for iris positioning and iris recognition, which is applied in the acquisition/recognition of eyes, character and pattern recognition, instruments, etc., and can solve the problems of high complexity, long time, and blurred images.

Active Publication Date: 2021-06-29
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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Problems solved by technology

[0005] 1. Methods such as calculus circle detector, Hough transform and exhaustive circle fitting need to search the three-dimensional parameter space of the iris boundary point by point, so the complexity is high and the time-consuming is long, which requires real-time performance of the iris recognition system poses serious challenges
[0006] 2. This type of method strictly relies on high-contrast imaging of the iris boundary, is sensitive to noise interference and non-uniform illumination, and is difficult to adapt to various types of image blurring. It is only suitable for high-quality iris imaging systems and has poor robustness. Low-quality iris imaging systems that cannot be applied in complex environments

Method used

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  • An iris positioning method for iris recognition in long-distance traveling
  • An iris positioning method for iris recognition in long-distance traveling
  • An iris positioning method for iris recognition in long-distance traveling

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[0070] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0071] A kind of concrete steps of the iris location method that is used for iris identification in long-distance traveling is:

[0072] The first step is to remove randomly distributed light spots and noise interference in the iris image.

[0073] In the long-distance traveling iris recognition system, due to the different postures of the recognized persons, the image acquisition position and distance are not fixed, the light spots formed by the light source in the acquired iris image are often distributed randomly, and t...

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Abstract

The invention discloses an iris positioning method for iris recognition during long-distance travel, comprising: removing randomly distributed light spots and noise interference in an iris image; detecting the transition edge between the pupil and the iris, locating the inner boundary of the iris; and detecting the iris and the sclera the transition edge of the iris, which locates the outer border of the iris. The iris positioning method in the present invention is insensitive to imaging conditions such as illumination and blur, and has low computational complexity, which can effectively improve the robustness and real-time performance of the iris positioning of the iris identification system during long-distance travel, thereby helping to improve the identification of the system. speed and accuracy.

Description

technical field [0001] The invention relates to an iris positioning method. More specifically, it relates to an iris positioning method for iris recognition in long-distance traveling. Background technique [0002] With the rapid development of information technology, people have higher and higher requirements for identity authentication and information security. In order to meet people's needs, biometric identification technology has received more and more attention. At present, fingerprints, faces, iris and other identification technologies based on the inherent biological characteristics of the human body have gradually entered people's lives, providing convenient services for people's lives in many fields such as airport security checks, access control systems, and secure payments. Among many biometric identification technologies, iris recognition has become a key research direction and development trend in the field of biometrics due to its significant advantages such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/32
CPCG06V40/197G06V40/19G06V10/245
Inventor 郭慧杰韩一梁杨昆王超楠杨倩倩
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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