Iris positioning method and device

An iris positioning and iris technology, applied in character and pattern recognition, instruments, acquisition/recognition of eyes, etc., can solve the problems of inaccurate iris positioning results and uneven illumination

Active Publication Date: 2021-01-01
BEIJING EYECOOL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides an iris positioning method and device to at least solve the problem of inaccurate iris positioning results in the prior art when the iris image is a non-ideal iris image such as non-circular pupils, uneven illumination, and over or under exposure. question

Method used

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  • Iris positioning method and device
  • Iris positioning method and device

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Embodiment 1

[0045] According to an embodiment of the present invention, an embodiment of an iris locating method is provided. It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and, although A logical order is shown in the flowcharts, but in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0046] image 3 is a schematic diagram of an iris location method according to an embodiment of the present invention, such as image 3 As shown, the method includes the following steps:

[0047] Step S302, acquiring the image information of the target iris, and roughly locating the pupil in the image information.

[0048] Specifically, the above-mentioned target iris is the iris to be detected, and the image information of the target iris can be a standard iris image, or a non-ideal iris image, that is, one wit...

Embodiment 2

[0167] The present application also provides an iris locating device, which can be used to implement the iris locating method in Embodiment 1, Figure 10 It is a structural schematic diagram of an iris positioning device according to an embodiment of the present application, and the device includes:

[0168] The acquisition module 100 is configured to acquire the image information of the target iris, and roughly locate the pupil in the image information.

[0169] The first determining module 102 is configured to construct a tripartite map of the target object according to the rough positioning result of the pupil, and extract the target object from the image information through a preset algorithm according to the tripartite map, wherein the target object includes: the pupil of the target iris, The outer circle of the eyelids and iris.

[0170] The second determination module 104 is configured to determine the positioning information of the target iris according to the extract...

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Abstract

The invention discloses an iris positioning method and device. Among them, the method includes: obtaining the image information of the target iris, and roughly positioning the pupil in the image information; constructing a tripartite map of the target object according to the rough positioning result of the pupil, and using a preset algorithm to obtain extract the target object, wherein the target object includes: the pupil, eyelid and iris outer circle of the target iris; determine the positioning information of the target iris according to the extracted pupil, eyelid and iris outer circle, wherein the positioning information includes at least one of the following: pupil border, eyelid border, and iris outer border. The invention solves the technical problem of inaccurate iris positioning results in the prior art when the iris image is a non-ideal iris image such as non-circular pupils, uneven illumination, over- or under-exposure, and the like.

Description

technical field [0001] The invention relates to the field of image processing, in particular to an iris positioning method and device. Background technique [0002] Iris recognition refers to the technology of using the characteristic information of the iris in the eye to achieve the purpose of identification. In recent years, iris recognition technology is considered to be the most promising biometric technology. The iris is the ring-shaped area on the surface of the human eye between the black pupil and the white sclera, and each iris contains unique features such as spots, pits, filaments, folds, crystals, and more. As a biometric feature, the iris has the following advantages that other biometrics cannot match: uniqueness, stability, high anti-counterfeiting and non-contact. Therefore, iris recognition has the advantages that the above-mentioned other biometrics do not have, so it is more suitable for information Authentication technology in security. [0003] In the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V40/193G06V40/19
Inventor 孙婷王琪张祥德
Owner BEIJING EYECOOL TECH CO LTD
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