Visible Light Palm Authentication Extracting Vein and Print Features
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Solution Overview
Problem
Existing biometric authentication methods face challenges in accurately and securely authenticating individuals using vein patterns and palm prints, particularly due to the need for dedicated near-infrared devices and susceptibility to imposture.
Innovation Solution
A system that extracts vein patterns and palm print features from a single visible light image, using a visible light camera and red light illumination to generate authentication data, allowing for high-accuracy individual authentication without the need for specialized equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If near-infrared rays are used to acquire vein pattern, then the security against imposture is improved, but the device complexity increases due to the need for dedicated near-infrared emission and photography equipment
Solution Approach 1:
The patent changes the light wavelength parameter from near-infrared to visible light (specifically red light around 650nm), allowing the use of ordinary cameras instead of specialized near-infrared equipment. This parameter change maintains the ability to capture vein patterns while eliminating the need for complex dedicated devices.
Solution Approach 2:
The invention replaces expensive, specialized near-infrared emission and photography equipment with inexpensive, readily available visible light cameras and red light sources. This substitution dramatically reduces device complexity and cost while maintaining authentication security.
2Measurement precision
If multiple biometric components are combined for high accuracy authentication, then the authentication accuracy is improved, but the device complexity increases due to the need for multiple imaging systems
Solution Approach 1:
The patent merges the capture of vein patterns and palm print shapes into a single imaging operation using one visible light camera. By combining multiple biometric data acquisition functions into a single device and process, the system achieves high authentication accuracy without requiring multiple separate imaging systems.
Solution Approach 2:
The visible light camera system is designed to perform multiple functions: capturing vein patterns, palm print shapes, and palm profile information all through a single imaging device. This multi-functionality eliminates the need for separate specialized equipment for each biometric modality.
3Reliability
If vein pattern information is used for authentication, then the security is improved, but the ease of operation deteriorates due to the need for specialized near-infrared equipment
Solution Approach 1:
The invention replaces complex, specialized near-infrared equipment with simple, inexpensive visible light cameras and red light sources. This substitution makes the system easier to operate and deploy while maintaining the security benefits of vein pattern authentication.
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
Enables simple and accurate individual authentication by extracting both vein patterns and palm print features from a single image, reducing device complexity and cost while enhancing security.
Implementation Method 1
at least one reflection image to form by the light which is emitted from the authentication light source and reflected on the palm of the human body is acquired by the authentication image acquisition unit
Data Source
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AI summary
The present invention provides a technology capable of simply performing individual authentication with high accuracy by extracting the feature of the vein pattern and the feature of the palm print shape of the person to be authenticated from a single original image data photographed using a visible light image acquisition unit (e.g. visible light camera). An authentication light source 11 radiates light which contains at least red light in the visible light region toward a palm of a human body. An authentication image acquisition unit 12 acquires at least one reflection image formed by the light which is radiated from the authentication light source 11, and is reflected by the palm of human body. An authentication image processing unit 13 performs image processing of the reflected image, and extracts the shape of palm print and the shape of veins in the palm respectively from a single sheet of the reflected image for the authentication to generate the authentication data.