Iris recognition method and device based on edge detection

A technology for iris recognition and edge detection, applied in character and pattern recognition, eye acquisition/recognition, image data processing, etc., can solve the problems of large storage and computing resources, consumption, and low precision, and achieve strong operability and enhanced Calculating speed, accelerating the effect of precise positioning

Active Publication Date: 2019-10-08
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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  • Iris recognition method and device based on edge detection
  • Iris recognition method and device based on edge detection
  • Iris recognition method and device 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 invention provides an iris recognition method and device based on edge detection. The iris recognition method based on edge detection comprises the steps of conducting edge pixel enhancement on aniris image obtained in advance through a differential gradient method; in a preset sampling point hit threshold range, based on a preset maximum diameter and a preset minimum diameter of the initialiris, carrying out iterative estimation circulation on iris parameters to obtain pixel points of the iris image contour, and outputting iris parameters; verifying the legality of edge points on the iris image contour according to the iris parameters, and performing interpolation processing on missing edge points after verification to obtain an ideal iris; and extracting characteristic parameters of the ideal iris, and comparing the characteristic parameters of the ideal iris with the characteristic parameters of the characteristic library to generate a recognition result. The edge pixels are enhanced through the differential gradient method, noise data are eliminated, the calculation speed of iris parameters is effectively increased through the preset range, and the method has the advantages of being high in operability, high in iris contour positioning efficiency and the like.

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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/40G06T7/13
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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