Iris Recognition Gaze Guidance Using Visibility Limiting Louvers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Biometric iris recognition systems face challenges in efficiently guiding users to position their eyes correctly, especially when multiple units are vertically displaced to accommodate different heights, leading to user confusion and increased time for device usage.
Innovation Solution
An integrated user interaction system with a visibility limiting device and a user attention component, such as a mirror or graphical user interface, is used to direct the user's gaze to the appropriate position, limiting the angular field of view to prevent confusion and ensure accurate iris imagery acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple iris acquisition units are vertically displaced to accommodate different heights, then the system can serve users of different heights, but user confusion increases and usage time increases
Solution Approach 1:
A visibility limiting device is introduced as an intermediary element between the user and multiple iris acquisition units. This device selectively blocks or reveals specific units based on the user's height, serving as a mediator that guides users to the appropriate sensor without causing confusion. The visibility limiting device translates the complex multi-unit configuration into a simple visual cue system.
Solution Approach 2:
The visibility limiting device utilizes visual appearance changes (analogous to color changes) to indicate which iris acquisition unit should be used. By making certain units visible or invisible based on user height, the system provides intuitive visual feedback that helps users quickly identify the correct positioning without needing to understand the complex multi-unit configuration.
2Adaptability or versatility
If multiple iris acquisition units are vertically displaced to accommodate different heights, then the system can serve users of different heights, but user confusion increases
Solution Approach 1:
The visibility limiting device acts as an intermediary that simplifies the user interface. Instead of presenting users with multiple visible options that cause confusion, it selectively reveals only the relevant acquisition unit based on detected user height, making the system as easy to use as a single-unit system while maintaining multi-height adaptability.
Solution Approach 2:
The system automatically determines the appropriate iris acquisition unit based on the user's height without requiring user input or selection. The visibility limiting device passively adapts to the user's position and automatically reveals the correct unit, making the system self-adjusting and eliminating the need for user confusion or manual configuration.
3Measurement precision
If a visibility limiting device is used to guide user gaze, then user positioning accuracy improves, but device complexity increases
Solution Approach 1:
The visibility limiting device is implemented as a separate, modular component that can be independently adjusted or replaced. This segmentation allows the guiding function to be added without redesigning the entire iris acquisition system, maintaining low overall complexity while achieving high positioning precision through the specialized visibility control mechanism.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively reduces user confusion and streamlines the iris recognition process by guiding users to the correct position, enhancing throughput and accuracy in biometric data acquisition.
Implementation Method 1
a mirror to reflect an image of an eye of a user towards the user
Implementation Method 2
a louver disposed between the user and the mirror to limit an angular field of view of the mirror
Implementation Method 3
an image sensor to acquire an image of the iris of the user when the iris is within the angular field of view of the mirror
Data Source
AI summary
The present disclosure describes systems and methods for directing a gaze of a user to one of different locations or positions of an iris biometric acquisition system for accommodating different heights of individuals. A user attention device may be positioned behind a visibility limiting device, for use in guiding the gaze of the user and positioning an eye of the user with respect to the iris biometric acquisition system. The visibility limiting device may be configured to limit an angular field of view of the user attention device. A sensor may be positioned at, behind or adjacent to the visibility limiting device. The sensor may be configured to acquire imagery of an iris from the eye positioned using the user attention device and the visibility limiting device.