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Identity discriminating method based on living body iris

A technology of iris recognition and identity recognition, which is applied in the field of pattern recognition, can solve the problems of forgery and theft of biometric recognition technology, and achieve the effect of high reliability, lower requirements, and good recognition performance

Inactive Publication Date: 2005-07-06
BEIJING IRISKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, like traditional security methods (such as passwords, etc.), biometric identification technology based on iris is also in danger of being forged and stolen.

Method used

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  • Identity discriminating method based on living body iris
  • Identity discriminating method based on living body iris
  • Identity discriminating method based on living body iris

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Embodiment 1: the identification of living iris

[0085] The living iris identification method of the present invention can be used in various application systems based on iris identification technology. combine Figure 5The description and use process is as follows: for the input iris image sequence, randomly select 3 iris images, perform Fourier transform on these iris images, and then calculate their corresponding high-frequency energy values. If the high-frequency energy value of more than two images is greater than a certain threshold, it is determined as a non-living iris, and the algorithm ends. Otherwise, interval sampling is performed on the iris image sequence to form an image set to be detected. Use the method of edge detection to detect the radius of the pupil and iris from each image, and then calculate the variance (or absolute mean difference) representing this image sequence according to formulas (1) and (2) (or (3)) . If this value is less than a ce...

Embodiment 2

[0086] Embodiment 2: Identification based on living iris

[0087] The identification method based on the living iris proposed by the present invention can be applied to various identification systems, combining figure 1 The description and use process is as follows: collect the iris image sequence of the individual to be identified, firstly identify the iris of the living body, and refuse to identify if it is a non-living iris. If it is a living iris, evaluate the quality of the image sequence. If the image sequence meets certain requirements, the method will automatically select a relatively clear iris image from the sequence. Otherwise, use some image processing techniques to restore an iris image that can be used for recognition from the image sequence. Finally, the recognition result is given by recognizing the selected or recovered iris images.

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Abstract

An identity recognizing method based on living iris includes such steps as discriminating living iris, quality evaluation and selection of iris image, restoring the out-of-focus image, and iris recognization. Its advantages are high reliability and speed, low requirement of hardware and high correctness.

Description

technical field [0001] The invention relates to pattern recognition, in particular to a living iris-based identification method. Background technique [0002] Living in a highly informationized modern society, identity recognition has penetrated into every aspect of people's daily lives. At the same time, due to the rapid development of transportation, communication and network technologies, the scope of human activities is increasing, and the difficulty and importance of identification are becoming more and more prominent. For a country with a large population like my country, identification has particularly broad application prospects and important strategic significance. Finance, security, network, e-commerce, etc. all do not require reliable identification. Traditional identification methods such as passwords have disadvantages such as easy forgetting and easy counterfeiting, which no longer meet the needs of the modern digital society. The identification technology ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/1171G06T1/00G06T7/00
Inventor 谭铁牛王蕴红马力
Owner BEIJING IRISKING
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