Convergent Biometric Authentication Using Finger Joint and Vein

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional biometric authentication methods using finger veins face low recognition rates and slow authentication speeds due to finger position changes and the need for a large image area, which complicates image processing and increases false recognition rates.

Innovation Solution

A convergent biometric authentication method that simultaneously acquires and matches finger joint fingerprint line images with finger vein images, using vector-based feature points to minimize the image region necessary for authentication, thereby setting core points and reducing the size of the authentication apparatus and improving user convenience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional finger vein authentication is used, then user identity can be authenticated, but recognition rates are low and authentication speed is slow due to finger position changes

Engineering Contradiction:

Improverecognition rateVSAvoidimage processing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines finger vein images with finger joint fingerprint line images to create a composite biometric template. By merging two different biometric features from the same finger, the system achieves higher recognition accuracy and reliability while maintaining efficient processing through unified image acquisition and feature extraction procedures.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent performs preliminary image processing by acquiring both finger vein and fingerprint line images simultaneously, and pre-processing them together to extract corresponding feature points. This preliminary alignment and feature extraction before authentication significantly reduces processing complexity during actual authentication while improving recognition rates.

Inventive Principle:

Principle #10Preliminary action

2Measurement precision

If a wide area of finger veins is recognized, then more feature information is obtained, but authentication speed decreases and false recognition rates increase

Engineering Contradiction:

Improvefeature extraction accuracyVSAvoidauthentication speed

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The patent extracts only the essential feature points from finger vein images by combining them with fingerprint line features. Instead of processing the entire wide area of finger veins, the system identifies and extracts key intersection points between vein patterns and fingerprint lines, significantly reducing processing data volume while maintaining high feature extraction accuracy.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent applies local quality processing by focusing computational resources on specific high-value regions where finger veins intersect with fingerprint lines. These intersection points contain the most discriminative biometric information, so the system concentrates processing power on these localized areas rather than uniformly processing the entire finger vein region.

Inventive Principle:

Principle #3Local quality

3Ease of operation

If finger vein images are processed without reference points, then authentication can be performed, but recognition rates are lowered due to finger position changes

Engineering Contradiction:

Improveauthentication convenienceVSAvoidrecognition rate

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent makes the finger joint fingerprint lines serve a dual function: they are both a biometric feature for authentication and a reference framework for positioning finger vein features. This multi-functionality allows the system to handle finger position changes effectively while maintaining authentication convenience, as the fingerprint lines naturally adapt to any finger placement.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces finger joint fingerprint lines as an intermediary element that mediates between the finger vein features and the authentication system. These fingerprint lines serve as stable reference points that remain consistent regardless of finger position, enabling accurate matching and positioning of vein features while maintaining ease of operation.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 significantly increases recognition rates and authentication speed, reduces false recognition rates, and minimizes the size of the biometric authentication apparatus, providing a more convenient and efficient user authentication process.

Implementation Method 1

radiates near infrared rays onto a user's finger on the basis of the feature that reduced hemoglobin in finger veins absorbs near infrared rays

Methodology Applied

Scientific EffectAbsorption of near infrared rays by reduced hemoglobin: Absorption (EM radiation)

Data Source

PatentUS11163972B2Convergent biometric authentication method based on finger joint and finger vein, and apparatus therefor

Publication Date: 2021.11.02 LEE BYUNG DO

AI summary

The present invention relates to a convergent biometric authentication method based on a finger joint and a finger vein, and an apparatus therefor, which can solve the phenomenon of recognition rate degradation according to a change in finger positions by matching a fingerprint image of the finger joint and a fingerprint image of the finger vein, and can improve the recognition rate and authentication speed by means of a few number of feature points.