Infrared Eye Decision Device for Decoy Detection
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Solution Overview
Problem
Current iris recognition systems are vulnerable to hacking attempts, such as using decoys like synthetic eyes, which can deceive the devices and compromise security.
Innovation Solution
A decision device that uses infrared lighting and capture means to align with the optical axis of an eye, detecting the presence of a macula and iris through specific color differentiation, and includes tracking and positioning mechanisms to ensure accurate alignment and verification, distinguishing between real and false eyes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional iris recognition methods are used, then identification can be performed, but the system is vulnerable to decoy attacks such as synthetic eyes or photographs
Solution Approach 1:
The system performs preliminary actions by capturing images under specific lighting conditions before the actual recognition process. The infrared lighting illuminates the eye from a specific angle to pre-highlight the macula's reflective properties, ensuring that the verification of authentic iris features occurs before final identification decisions are made
Solution Approach 2:
The system exploits color changes by using infrared lighting to illuminate the eye, which causes the macula to reflect infrared light and appear as a bright central area in the captured image. This optical property creates a distinctive visual signature that differentiates real eyes from synthetic decoys, as fake eyes lack the biological macula structure that produces this specific reflective pattern
2Reliability
If multiple verification methods are implemented to detect decoys, then security is improved, but the processing time and system complexity increase
Solution Approach 1:
The verification process is segmented into distinct phases: first, infrared illumination is applied to capture the macula's reflective pattern; second, the captured image is analyzed to verify the presence and characteristics of the bright central area; third, standard iris recognition proceeds if verification succeeds. This segmentation allows for efficient, targeted verification without requiring multiple redundant checks
Solution Approach 2:
The macula serves as an intermediary verification element between the infrared light source and the iris recognition system. By detecting the macula's specific reflective properties, the system obtains intermediate verification data that confirms the authenticity of the eye before proceeding with full iris recognition, thereby reducing the need for more time-consuming verification methods
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
Effectively differentiates between real and false eyes by detecting the unique color characteristics of the macula and iris, enhancing security by preventing decoy attempts and ensuring accurate identification.
Implementation Method 1
lighting means emitting an infrared flux towards the eye
Implementation Method 2
an infrared capture means provided for capturing an image of the eye
Data Source
Figure 1
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AI summary
The invention relates to a decision device (100) provided to decide whether an eye (50) having a macula (53) and an optic axis (51) is real or false, said decision device (100) comprising: - light means (102) emitting an infra-red light toward the eye (50) along an entry axis (106), - infra-red capture means (104) provided to capture an image of the eye (50) along an exit axis (110), the entry axis (106) and the exit axis (110) being aligned with the optic axis (51) such that the macula (53) lit by the lighting means (102) under the incidence of the entry axis (106) is seen by the capture means (104), - processing means (108) provided to detect, on an image captured by the capture means (104), whether a representative peripheral zone of the iris (54) exists and whether a central zone inside the peripheral zone and the colour of which is representative of the existence of the macula (53) exists, and to deliver information representative of that detection, and - decision means (109) provided to decide whether the eye (50) is real or false based on the information delivered by the processing means (108).