Living iris detection method based on dual wavebands

A detection method, dual-band technology, applied in deception detection, instruments, calculations, etc., can solve problems such as social order disorder, and achieve the effect of shortening the detection time

Pending Publication Date: 2022-06-03
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Abstract
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  • Application Information

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Problems solved by technology

In this context, even if the iris recognition accuracy is high, if the attack of forged samples cannot be defended, once these physiological characteristics are obtained by criminals and used to steal property or information, social order will be disordered

Method used

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  • Living iris detection method based on dual wavebands
  • Living iris detection method based on dual wavebands
  • Living iris detection method based on dual wavebands

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Embodiment Construction

[0023] The invention provides a dual-band-based living iris detection method, which selects the two bands with the largest difference in the number of texture features of the living human eye and the fake sample as the two control bands in the algorithm. The difference between the absorption and reflectivity of the biological texture simulated by the fake sample in different wavelength bands is used to distinguish the authenticity from the fake. The present invention will be further described in detail below with reference to specific embodiments.

[0024] The dual-band-based living iris detection method comprises the following steps:

[0025] S1. The administrator enables the liveness detection permission in the background, and the user performs iris liveness detection on the client;

[0026] S2. The lighting module starts to work under the control of the central controller, and the user is within the working range of the lighting module and the depth of field of the camera;...

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Abstract

The invention discloses a living iris detection method based on dual wavebands, and belongs to the technical field of biological image processing. Comprising the following steps: performing living iris detection in a living body detection permission, acquiring a human eye region image I of a user in a 530-nanometer wave band and a human eye region image II of a user in a 700-nanometer wave band in a depth-of-field range of a camera, and preprocessing the human eye region images to obtain a grayed iris image; obtaining an interested iris and sclera region tissue feature map If1 and a blood vessel texture feature map If2; and calculating the difference degree between the tissue and blood vessel texture feature map of the I and the tissue and blood vessel texture feature map of the II by using a Hash algorithm, extracting living body detection features according to the difference between the tissue feature maps If1 and IIf1 and the blood vessel texture feature maps If2 and IIf2, and outputting an iris authenticity judgment result. According to the method, true and false distinguishing is carried out according to the difference of the absorption reflectivity of the blood vessels and tissues in the eyes of the living body and the biological texture simulated by the forged sample in different wavebands, and the attack of the forged iris can be well defended.

Description

technical field [0001] The invention belongs to the technical field of biological image processing, and in particular relates to a dual-band-based living iris detection method. Background technique [0002] Iris recognition technology is similar in concept to fingerprint recognition technology, both of which are based on the unique physiological characteristics of the human body for identification. However, due to the acquisition equipment and methods of iris images, iris recognition requires a high degree of cooperation from the collector, and its friendliness is not as good as that of fingerprint recognition. Therefore, its commercialization degree has always been lower than that of fingerprint recognition and face recognition. In CN201910101762.3, in the patent for anti-counterfeiting method and device based on living iris, the user's first face image collected by a visible light camera is used to obtain the iris image of the user, and it is judged whether the iris image ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V40/18G06V40/19G06V40/40G06V10/28G06V10/30G06V10/48G06V10/764G06K9/62
CPCG06F18/24Y02B20/40
Inventor 崔家礼黄敏慧王鹏曹义东李涵陈晨王杰刘远
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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