Iris Recognition Terminal Eyeball Reflection Unit
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Solution Overview
Problem
Iris recognition terminals face challenges in accurately recognizing irises due to gazing phenomena and specular light reflections from glasses, leading to increased recognition time and inconvenience, especially in portable devices.
Innovation Solution
An iris recognition terminal with an image collection part using infrared rays, an image processing part, and a display unit that includes an eyeball reflection unit to guide users in positioning their eyes and a specular light search unit to avoid specular light, ensuring quick and accurate iris recognition without the need to remove glasses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a camera is located at the upper part of a display unit in a portable terminal, then the device structure is simplified and manufacturing is easier, but a gazing phenomenon occurs causing difficulty in iris recognition
Solution Approach 1:
The patent introduces a position indicator that displays the optimal gazing position on the screen, adding a visual guidance dimension to help users align their eyes correctly with the camera. This resolves the contradiction by maintaining the simplified upper-camera structure while providing users with dimensional guidance to achieve proper eye-camera alignment, thereby ensuring accurate iris recognition without changing the physical device structure.
2Ease of operation
If a user wears glasses during iris recognition, then the user maintains comfort and convenience, but specular light from the glasses interferes with obtaining a clear iris image
Solution Approach 1:
The patent employs a position indicator that provides real-time visual feedback to users about their eye position relative to the camera. When specular light from glasses interferes with iris recognition, the system can guide users to adjust their gaze or head position through the position indicator, enabling them to maintain comfort while achieving optimal image quality without removing their glasses.
3Measurement precision
If the camera and display unit are positioned to match user gaze, then iris recognition accuracy improves, but the device becomes more complex and harder to manufacture
Solution Approach 1:
The patent introduces a position indicator as an intermediary element that mediates between the fixed camera position and the user's variable eye position. Rather than making the camera moveable or repositioning it to match user gaze, the position indicator serves as a visual mediator that guides users to align their eyes with the camera, achieving accurate iris recognition while maintaining a simple, fixed device structure.
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 solution enables quick and accurate iris recognition by maximizing the alignment between the user's eyes and the infrared irradiation point, minimizing gazing phenomena and specular light interference, thus improving the convenience and efficiency of the iris recognition process.
Implementation Method 1
an eyeball reflection unit reflecting visible light and transmitting the infrared ray
Implementation Method 2
reflecting visible light and transmitting the infrared ray
Data Source
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AI summary
A terminal for minimizing a gazing phenomenon in an iris recognition terminal is disclosed. The iris recognition terminal may minimize the gazing phenomenon by including an eyeball reflection unit. Also, it is also possible to minimize the gazing phenomenon by displaying a positioner on a display unit. A person who wears glasses may experience specular light on the iris recognition terminal but the terminal of the present disclosure avoids the specular light. The terminal determines the location of the specular light and guides an avoidance location to a user based on the determination, so quick and accurate iris recognition is possible.