Iris Recognition Using Reflection Unit and Multi-Angle Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Iris recognition systems face challenges in miniaturization and increased production costs due to the need for additional distance sensors, and they require users to precisely align their eyeballs within a narrow recognition range, causing inconvenience.
Innovation Solution
The use of multiple image collection units with varying angles of view to measure distance and include a reflection unit to expand the image collection range and reduce thickness, allowing for accurate iris recognition without additional sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a distance sensor is added to determine eyeball position, then measurement precision is improved, but device complexity and production cost increase
Solution Approach 1:
The patent makes the image collection unit perform multiple functions: it collects images for iris recognition and simultaneously measures distance to the eyeball by analyzing the position of the eyeball image within the image. This eliminates the need for separate distance sensors while maintaining measurement capability.
Solution Approach 2:
The image collection unit serves itself by using its own captured image data to determine both the iris recognition target and the distance to the eyeball. The system extracts distance information from the image coordinates without requiring external measurement devices.
2Measurement precision
If the angle of view of the image collection unit is narrowed for precise iris recognition, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The system provides feedback to the user by displaying the captured image on a display unit, showing where the eyeball is positioned relative to the recognition range. This visual feedback guides the user to adjust their position until the eyeball is correctly positioned for recognition.
Solution Approach 2:
The system performs preliminary image capture and analysis to determine eyeball position before actual iris recognition. This preliminary action allows the system to guide the user into the correct position in advance, making the subsequent recognition process smoother.
3Ease of operation
If a reflection unit is added to expand image collection range, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The reflection unit redirects light from the eyeball to the image collection unit by changing the optical path dimension. This allows the image collection unit to capture images of eyeballs that are not directly in front of it, effectively expanding the collection range without adding multiple cameras.
Solution Approach 2:
The patent combines the reflection unit with the existing image collection unit and display unit into an integrated system. The reflection unit works in conjunction with the image collection unit to achieve expanded functionality while maintaining a unified apparatus 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
This approach enables miniaturization of iris recognition systems, reduces production costs, and simplifies user alignment by using image collection units with different focal lengths and a reflection unit to guide the eyeball into the correct position for recognition.
Implementation Method 1
the image collection units may use a camera or the like to collect an image of an eyeball
Implementation Method 2
a reflection unit reflecting light received from outside the electronic device toward the image collection units
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
An iris recognition apparatus for recognizing iris in an eyeball is provided. In particular, an iris recognition apparatus including a reflection unit that reflects and transmits an image of an eyeball is provided. The reflection unit reflects and transmits an image of an eyeball. A first image collection unit collects a reflected image. A control unit extracts an iris pattern based on the collected image.