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Iris image acquisition method and device

An image acquisition device and iris image technology, which is applied in the directions of instruments, computing, acquisition/recognition of eyes, etc., and can solve the problems of dark red light spots on the surface of the image acquisition device, etc.

Active Publication Date: 2021-11-19
WUHAN HONGSHI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an iris image acquisition method and device to solve the problem of dark red light spots on the surface of the image acquisition device during use

Method used

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  • Iris image acquisition method and device
  • Iris image acquisition method and device

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no. 1 example

[0044] A method of iris image acquisition is introduced in detail below, please refer to image 3 , image 3 A schematic flow chart of an iris image acquisition method provided in an embodiment of the present invention, the method includes the following steps:

[0045] Step S110: the image acquisition device turns on the first light source, and the wavelength of light emitted by the first light source is greater than the wavelength of visible light.

[0046] Specifically, the first light source is used for normal facial illumination when collecting a human face image, and assists in the human eye recognition process. Since the wavelength of visible light of ordinary human eyes is between 380 and 780 nanometers, in order to make the surface of the image acquisition device have no obvious dark red spots when collecting face images, the wavelength of the light source used when collecting face images should be greater than the wavelength of visible light . In the embodiment of ...

no. 2 example

[0100] Please refer to Figure 8 , Figure 8 It is a schematic diagram of an iris image acquisition device provided by an embodiment of the present invention. The iris image acquisition device 20 includes: a first opening module 210 , a first acquisition module 220 , a second opening module 230 and a second acquisition module 240 . Wherein, the first opening module 210 is used to turn on the first light source, the wavelength of the light emitted by the first light source is greater than the wavelength of visible light; The first relative position between the collection devices collects the first face image; the second opening module 230 is used to turn on the second light source when the human eye recognition result of the first face image collected meets a preset condition, and the The wavelength of the light emitted by the second light source is within the iris collection working wavelength range of the image collection device; the second collection module 240 is configure...

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Abstract

The present invention provides a method and device for collecting iris images. The method includes: turning on the first light source, the wavelength of the light emitted by the first light source is greater than the wavelength of visible light; Collect the first face image at the first relative position between them; when the human eye recognition result of the first face image collected meets the preset condition, turn on the second light source, and the wavelength of the light emitted by the second light source is within the range of the image. The iris collection of the collection device is within the working wavelength range; under the illumination of the second light source, the iris image is collected at the first relative position. By adopting two different light sources to carry out the human eye recognition process and the iris image collection process respectively, while realizing the human eye recognition process without obvious dark red light spots on the surface of the image collection device, the smooth progress of the iris image collection process is ensured.

Description

technical field [0001] The present invention relates to the technical field of image acquisition, in particular to an iris image acquisition method and device. Background technique [0002] Iris recognition technology is widely considered to be the most promising biometric authentication technology in the 21st century. Future applications in various fields such as security, national defense, and e-commerce will inevitably focus on iris recognition technology. [0003] The appearance map of the human eye is composed of three parts: the sclera, the iris, and the pupil. The iris is located between the sclera and the pupil, and contains the most abundant texture information. It is one of the most unique structures in the human body. Since the formation of the iris is determined by genetics, its shape can remain unchanged for decades. Therefore, the highly unique, stable and unchangeable characteristics of the iris are the material basis for the iris to be used for identification...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/20
CPCG06V40/197G06V40/19G06V10/141G06V10/147
Inventor 高俊雄易开军托马斯·费尔兰德斯廖文哲吕晓宇
Owner WUHAN HONGSHI TECH