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A kind of iris recognition device with supplementary light function, recognition method and supplementary light method

A technology of iris recognition and supplementary light, which is applied in the field of biometrics, can solve the problems of low efficiency and unsatisfactory image quality, etc., and achieve the effect of improving experience, improving quality and uniform supplementary light

Active Publication Date: 2019-10-25
BEIJING TECHSHINO TECH
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of unsatisfactory quality and low efficiency of captured images caused by the fixed relative position and posture of the supplementary light of the iris recognition device and the iris capture camera, the technical solution provided by the present invention is as follows:

Method used

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  • A kind of iris recognition device with supplementary light function, recognition method and supplementary light method
  • A kind of iris recognition device with supplementary light function, recognition method and supplementary light method
  • A kind of iris recognition device with supplementary light function, recognition method and supplementary light method

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specific Embodiment approach 2

[0043] When the user performs iris recognition or iris registration, the user stands to the left, so that the eyes are not at the standard position E2 (that is, the preset human eye position), and the eyes are at the position E1 due to the left position. At this time, if Regardless of the human eye offset L3, the obtained target rotation angle is α, so that the position where the optical axis of the supplementary light module is aligned is E2, which makes the supplementary light at the real human eye E1 uneven, resulting in the collected User iris image quality is low. Therefore, it is necessary to consider the offset factor of the position of the eye area caused by the user's station. The method of obtaining L1 and L2 has been introduced in detail above, so I won’t go into details again. Using the method of obtaining human eye offset above, L3 can be obtained, and the target rotation angle β can be calculated by using trigonometric functions and other methods.

[0044] When ...

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Abstract

The invention discloses an iris recognition device, a recognition method and a light supplementing method with a supplementary light function. The device comprises: a collection module for collecting human eye images; When setting the definition, send a control signal to the supplementary light module; the supplementary light module is arranged on one side or both sides of the acquisition module, and is used to rotate according to the control signal, so that the optical axis of the supplementary light module is aligned with the human body. In the eye area, the angle range of the rotation is within 37-53 degrees, and the angle range is the angle range between the optical axis of the supplementary light module and the line formed by the connection between the supplementary light module and the acquisition module. Through the above method, the present invention can solve the problem of difficulty and poor user experience caused by the fixed optimal collection position, and it does not need to artificially adjust the angle position of the supplementary light module, which improves the automation and intelligence of the identification equipment and reduces the use of users. It eliminates the hassle, improves the user experience, and makes the identification process more efficient.

Description

technical field [0001] The invention relates to the field of biometric identification, in particular to an iris recognition device with light supplement function, an identification method and a light supplement method. Background technique [0002] Compared with the identification technology through text coding, the security of biometric-based identification technology is better, especially the iris-based identification technology, which utilizes the uniqueness of human iris characteristics, and is theoretically superior to other biometric identification technologies. Incomparable advantages. [0003] In traditional iris recognition equipment, the fill light is usually located on one side of the iris capture camera, and the fill light posture is set at a certain angle between the optical axis of the fill light and the axis of the iris capture camera, that is, the relative position and position of the fill light and the iris capture camera The posture is fixed, so that the s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V40/19G06F18/00
Inventor 陈建富
Owner BEIJING TECHSHINO TECH
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