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Iris 3D information acquisition system capable of avoiding influence of light source image

A light source image, iris technology, applied in the acquisition/recognition of eyes, instruments, characters and pattern recognition, etc., can solve the problems affecting the acquisition effect, etc., to achieve the effect of improving the acquisition resolution

Active Publication Date: 2020-05-08
TIANMU AISHI (BEIJING) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But even so, the image of the light source will still affect the collection effect to a certain extent, and a complex adjustment process is required to make the image of the light source at the specified position

Method used

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  • Iris 3D information acquisition system capable of avoiding influence of light source image
  • Iris 3D information acquisition system capable of avoiding influence of light source image
  • Iris 3D information acquisition system capable of avoiding influence of light source image

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Embodiment 1 (separator)

[0070] It includes image acquisition device 201, isolation device 500, light source 600, processor 400, target iris 301, and non-target iris 302 are different eyes of the same person.

[0071] The image acquisition device 201 may be a multi-camera matrix, a fixed single camera, a video camera, a rotating single camera, and other devices capable of image acquisition. It is used to capture an image of the target iris 301 . When performing two-dimensional iris collection, only two-dimensional images of the iris need to be collected and sent to the processor 400 for image processing, measurement and identification. However, two-dimensional iris measurement and recognition can no longer meet the current high-precision and high-accuracy collection, measurement, and recognition requirements. Therefore, the present invention also proposes to use a virtual camera matrix to realize three-dimensional iris collection. At this time, the image acquisiti...

Embodiment 2

[0079] In order to solve the above technical problems, an embodiment of the present invention provides an iris 3D information acquisition / measurement device. Such as Figure 4 As shown, it specifically includes: a track 101, an image acquisition device 201, an image processing device 100, a mechanical moving device 102, the image acquisition device 201 is installed on the mechanical moving device 102, and the mechanical moving device 102 can move along the track 101, so that the image acquisition The collection area of ​​the device 201 is constantly changing, forming multiple collection areas in different spatial positions over a period of time, forming a collection matrix, but at a certain moment there is only one collection area, so the collection matrix is ​​"virtual". Since the image acquisition device 201 is generally composed of cameras, it is also called a virtual camera matrix. However, the image acquisition device 201 can also be a video camera, CCD, CMOS, camera, mo...

Embodiment 3

[0110] Embodiment 3 (single-axis rotating iris collection)

[0111] The small-range, small-depth target object 3 has a smaller horizontal size compared with the camera acquisition range, and a smaller size along the depth direction of the camera, that is, the target object 3 has less information in the depth direction. In this application, although a single-camera system that moves in a large range through rails, robotic arms, etc. can also collect multi-angle images of the target object 3 to synthesize 3D point clouds or images, but these devices are more complicated, which reduces reliability. . And large movements lead to extended acquisition times. And because of its large size, it cannot be applied to many occasions (such as access control systems).

[0112] The small-scale and small-depth target 3 has its own unique characteristics, which require the acquisition / measurement equipment to be small in size, high in reliability, and fast in acquisition speed, especially ...

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Abstract

The invention provides an iris 3D information acquisition system capable of avoiding the influence of a light source image, and the system comprises a light source which is used for providing illumination for a non-target iris; an isolation device which is used for preventing light of the light source from entering the target iris; and an acquisition device which is used for acquiring target irisinformation; wherein the non-target iris and the target iris belong to different eyes of the same person respectively. When it is found that one eye of a person is illuminated during iris acquisitionfor the first time, the other eye also has a response similar to that of the illuminated eye, and it is conscious for the first time that the phenomenon can be used for the light supplementing processduring iris acquisition.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to the technical field of iris size and shape dimension measurement. Background technique [0002] In order to increase the effective area during iris acquisition and measurement, the pupil needs to be narrowed. The current common way of miosis includes supplementary light during iris measurement, that is, using a certain amount of light to increase the amount of light entering the pupil, thereby causing physiological miosis. This process necessarily requires the use of a light source. [0003] However, the lens in front of the eyeball is a transparent object. When the light source illuminates the eye, it will reflect the light of the light source, thereby forming an image of the light source on the eye. This image of the light source will affect the collection of the iris. When the image position of the light source coincides with the iris, iris information cannot be collecte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/19
Inventor 左忠斌左达宇
Owner TIANMU AISHI (BEIJING) TECH CO LTD
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