A method and device for iris recognition based on edge detection

A technology of iris recognition and edge detection, which is applied in the directions of acquisition/recognition of eyes, character and pattern recognition, image analysis, etc. It can solve the problems of low precision, large storage and computing resources, and consumption, so as to increase computing speed and be operable Strong performance, speed up the effect of precise positioning

Active Publication Date: 2022-03-11
INDUSTRIAL AND COMMERCIAL BANK OF CHINA
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Problems solved by technology

[0003] This application provides an iris recognition method based on edge detection, to at least solve the problem that the traditional algorithm of iris recognition in the prior art consumes a large amount of storage and computing resources and has low precision

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  • A method and device for iris recognition based on edge detection
  • A method and device for iris recognition based on edge detection
  • A method and device for iris recognition based on edge detection

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[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0056] In the existing technology, the traditional iris recognition algorithm has to perform nearly 300,000 calculations, consumes a large amount of storage and computing resources, and has low computing efficiency. Only when the traversal target is reduced to the edge point set of the image can the hit probability be effectively improved. . At the same time, because the outline of the iris and pupil of the human body is not a perfect circular structure, in ad...

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Abstract

The present application provides an iris recognition method and device based on edge detection, including: using the differential gradient method to enhance the edge pixels of the pre-acquired iris image; within the preset sampling point hit threshold range, based on the preset initial iris The maximum diameter and the minimum diameter of the iris parameter are iteratively estimated, and the pixels of the iris image contour are obtained, and the iris parameters are output; according to the iris parameters, the legitimacy of the edge points on the iris image contour is verified, and the missing edge after verification The points are interpolated to obtain the ideal iris; the characteristic parameters of the ideal iris are extracted, and the characteristic parameters of the ideal iris are compared with the characteristic parameters of the characteristic library to generate the recognition result. In this application, the edge pixels are enhanced to eliminate noise data through the differential gradient method, and the calculation speed of iris parameters is effectively improved through the preset range, which has the characteristics of strong operability and high iris contour positioning efficiency.

Description

technical field [0001] The present application belongs to the technical field of graphics and image processing, and in particular relates to an iris recognition method and device based on edge detection. Background technique [0002] In order to ensure the bank's accuracy of customer identity verification, a variety of verification and identification technologies have emerged, including traditional password keys, handwritten signatures, ID card readers, and a new generation of fingerprint devices based on biometric technology, palm veins, face recognition, etc. recognition and iris recognition etc. Iris recognition generally goes through the processes of iris detection, image segmentation, standardization, feature extraction, and matching. Image segmentation is to separate the iris area from the image, remove the burrs and bumps on the edge of the image, and obtain a ring structure, that is, of interest Region (ROI, region of interest), ROI detection and positioning are key...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06V40/18G06V10/30G06T7/13
CPCG06T7/13G06T2207/10004G06V40/197G06V40/193G06V10/30
Inventor 罗强陈杭刘朝伟张占礼
Owner INDUSTRIAL AND COMMERCIAL BANK OF CHINA
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