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Iris recognition and drug taking detection method and device, readable storage medium and equipment

An iris recognition and detection method technology, applied in the field of biometrics, can solve the problems of unsatisfactory detection accuracy, pupil detection accuracy, inconvenient use, etc., and achieves the effects of being convenient to carry, high accuracy, and improving accuracy.

Pending Publication Date: 2021-08-06
BEIJING TECHSHINO TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More equipment needs to be carried, and two separate inspections are required to complete the inspection task, which is inconvenient to use
[0007] In addition, due to the low accuracy of the pupils extracted by the current pupil detection-based drug addict screening detector, there are problems with the detection accuracy of the pupils of the tested personnel, so that the detection accuracy is not satisfactory

Method used

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  • Iris recognition and drug taking detection method and device, readable storage medium and equipment
  • Iris recognition and drug taking detection method and device, readable storage medium and equipment
  • Iris recognition and drug taking detection method and device, readable storage medium and equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0059] The embodiment of the present invention provides a method for iris recognition and drug use detection. Before iris recognition and drug use detection, it is necessary to register first, and store information such as the user's identity and iris template in advance. The registration process is as follows:

[0060] S100': Collect multiple eye images under multiple light intensities, extract multiple iris templates and corresponding multiple pupil diameters according to multiple eye images, and perform multiple iris templates and corresponding multiple pupil diameters storage.

[0061] The strength of the ambient light intensity will affect the amount of information in the iris of the human eye. When the light intensity is relatively strong, the pupil of the human eye shrinks and the amount of iris information is large. When the light intensity is relatively weak, the pupil of the human eye enlarges and the iris information Small quantity. The change of the amount of iris...

example 1

[0088] The first light intensity is less than the second light intensity, and the second light intensity is less than the third light intensity.

[0089] For example, the first light intensity may be a dark environment, the second light intensity may be an environment when the light is not too strong, and the third light intensity may be an environment when the light is brightest.

example 2

[0091] The third light intensity is less than the first light intensity, and the first light intensity is less than the second light intensity.

[0092] For example, the first light intensity is a medium-intensity light environment, the second light intensity is an environment with the strongest light, and the third light intensity is an environment with a weak light intensity.

[0093] In this example, the change curve of pupil diameter is as follows figure 2 , where the ordinate represents the pupil diameter, the abscissa represents time, and 1, 2, and 3 represent the first light intensity, the second light intensity, and the third light intensity, respectively.

[0094] Since the second light intensity is the strongest and the third light intensity is the weakest, the difference between the second light intensity and the third light intensity is the largest, and the corresponding pupil diameter difference is also the largest. The difference between the second light intensi...

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Abstract

The invention discloses an iris recognition and drug taking detection method and device, a readable storage medium and equipment, and belongs to the field of biological recognition. The method comprises the following steps: collecting a plurality of eye images under a plurality of illumination intensities, extracting to obtain a plurality of iris templates and pupil diameters, and storing the plurality of iris templates and pupil diameters; collecting a plurality of eye images under a plurality of illumination intensities according to a time sequence; extracting a plurality of iris images and pupil diameters according to the plurality of eye images; comparing the plurality of iris images with a pre-stored iris template with the same pupil diameter to obtain a plurality of comparison results; obtaining an iris recognition result according to the plurality of comparison results; and obtaining a drug taking detection result according to the change rate of the pupil diameters relative to the time. According to the invention, iris recognition and drug addict screening detection can be carried out at the same time, the carrying is convenient, the cost is reduced, the use is simple, and the accuracy of iris recognition and drug addict detection is improved.

Description

technical field [0001] The invention relates to the field of biological identification, in particular to an iris identification and drug use detection method, device, computer-readable storage medium and equipment. Background technique [0002] The human eye structure is composed of sclera, iris, pupil lens, retina and other parts. The iris is a ring-shaped part between the black pupil and the white sclera, which contains many interlaced spots, filaments, crowns, stripes, crypts and other detailed features. As an important identification feature, the iris has the advantages of lifetime uniqueness, stability, collectability, and non-invasiveness. It is an inevitable trend in the development of identification research and application. [0003] When performing iris recognition in the prior art, an iris image is generally collected indoors as an iris template. However, changes in ambient light intensity will affect the size of the pupil of the human eye. When the light intensi...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/62G06T7/00
CPCG06T7/0014G06T2207/30196G06T2207/30041G06V40/197G06V40/193G06V10/751
Inventor 彭程周军周长金
Owner BEIJING TECHSHINO TECH