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An iris information measurement system based on illumination control

A technology of light control and information measurement, which is applied in the fields of eye testing equipment, medical science, diagnosis, etc., and can solve problems affecting the collection effect

Active Publication Date: 2019-10-22
天目爱视(北京)科技有限公司
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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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  • An iris information measurement system based on illumination control
  • An iris information measurement system based on illumination control
  • An iris information measurement system based on illumination control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1 (light source control)

[0051] Such as figure 1 As shown, the iris information measurement / acquisition system based on illumination control includes an image acquisition device 201 , an iris 300 , a control device 500 , a light source 600 , and a processor 400 .

[0052] 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 iris 300 . 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-di...

Embodiment 2

[0060] In order to solve the above technical problems, an embodiment of the present invention provides an iris 3D information collection / measurement system. Such as figure 2 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, mob...

Embodiment 3

[0091] Embodiment 3 (single-axis rotating iris collection)

[0092]The iris of the small-scale and small-depth target 3 is smaller in lateral size compared with the camera acquisition range, and the size along the camera depth direction is smaller, that is, the target 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).

[0093] 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 its r...

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Abstract

The invention provides an iris information measurement system based on illumination control, an iris information collecting system based on illumination control, and an iris information collecting method. The measurement system comprises a light source, a collecting device, a control device and a measurement device, wherein the light source is used for providing illumination for the iris; the collecting device is used for collecting the information of the iris; the control device is used for controlling the opening and closing of the light source, when the light source is closed or after the light source is closed and before the pupil recovers the predetermined size, the collecting device is controlled to collect the information of the iris; and the measurement device is used for measuringthe size of the iris according to the information of the iris. According to the technical scheme, for the first time, the invention provides the means of preventing the light source image of the irisduring collection by utilizing the match between the collecting time of the image collecting device and the closing time of the light source.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to the technical field of iris length 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 collec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B3/10A61B3/14
Inventor 左忠斌左达宇
Owner 天目爱视(北京)科技有限公司
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