Computer-implemented method for refined localizing an iris of an eye
The computer-implemented method for refined iris localization addresses mislocation issues in iris recognition by employing a multi-step process for accurate iris and pupil detection, significantly improving the reliability of iris recognition systems.
WO2025056576A1 Publication Date: 2025-03-20THALES DIS FRANCE SA
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Patent Information
- Application Number
- PCT/EP2024/075310
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-09-13
- Filing Date
- 2024-09-11
- Publication Date
- 2025-03-20
AI Technical Summary
Technical Problem
Existing iris recognition methods face challenges with mislocation due to defocus blur, motion blur, and reflections from glasses, which impact the accuracy of iris localization and subsequent template creation.
Method used
A computer-implemented method for refined iris localization, which involves detecting the iris position, cropping the image, detecting the pupil position, performing coarse and refined localization of the iris and pupil, and preprocessing the image to enhance localization accuracy.
Benefits of technology
The method effectively addresses mislocation issues by improving the accuracy of iris and pupil localization, even in low-quality images, thereby enhancing the reliability of iris recognition systems.
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Abstract
The invention relates to a first computer-implemented method (1) for localizing an iris (20.0) of an eye (2), wherein said first computer-implemented method (1) comprising: - a detection of a first position (B1) of the iris (20.0) within a first image (11) of an eye (2), - a cropping of said first image (11) according to said first position (B1) so as to obtain a second image (I2), - a detection of a second position (B2) of the pupil (20.1) of said eye (2) based on said second image (I2), - a coarse estimation of the pupil (20.1) based on said second position (B2) of the pupil (20.1), - a refined localization of said iris (20.0) based on said first image (11) and on said pupil's coarse estimation.
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