Printed ID Card Verification Using Density Pattern Matching
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Solution Overview
Problem
Existing ID card verification systems fail to provide quick, low-cost, and secure identity, validity, and authenticity verification, especially for short-term use cases like visitor cards at events, due to the complexity and cost of incorporating IC memory, and the ease of forgery in simple paper-based cards.
Innovation Solution
A verification system using an instant photo printer to create ID cards with embedded face images and authenticity collation patterns, verified through density characteristics and electronic watermarks, allowing for quick issuance and secure verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If IC memory is incorporated in the ID card to verify authenticity, then security and authenticity verification capability are improved, but issuing cost and procedure complexity increase
Solution Approach 1:
The patent extracts the authenticity verification function from the physical IC memory component and implements it through printed authenticity collation patterns and electronic watermark information on standard card stock. This eliminates the need for expensive IC memory chips while maintaining verification capability through optical and digital analysis of printed features.
Solution Approach 2:
The patent replaces expensive, complex IC memory-based authentication systems with inexpensive printed patterns and electronic watermarks that can be applied to standard cards. This approach uses low-cost materials (paper/cardstock with printed features) that sacrifice physical durability but achieve the goal of affordable, quick issuance for short-term event cards.
2Reliability
If IC memory is incorporated in the ID card to verify authenticity, then security and authenticity verification capability are improved, but issuing cost increases
Solution Approach 1:
The patent replaces expensive, complex IC memory-based authentication systems with inexpensive printed patterns and electronic watermarks that can be applied to standard cards. This approach uses low-cost materials (paper/cardstock with printed features) that sacrifice physical durability but achieve the goal of affordable, quick issuance for short-term event cards.
Solution Approach 2:
The patent uses printed authenticity collation patterns and electronic watermarks as optical copies of verification data, replacing the need for physical IC memory chips. These printed and digital copies provide sufficient authentication capability for the intended use case while dramatically reducing material and manufacturing costs.
3Productivity
If simple paper-based ID cards are used for quick issuance, then issuing speed and cost are improved, but forgery resistance deteriorates
Solution Approach 1:
The patent applies specific local features (authenticity collation patterns in predetermined positions, electronic watermark information embedded in the image data, frequency characteristic data) to standard printed cards. These localized security features provide forgery resistance at specific points on the card without requiring complex overall card construction or expensive materials.
Solution Approach 2:
The patent transforms the verification approach by analyzing frequency characteristics of printed patterns and optical density distributions rather than relying on physical card properties. This parameter-based verification (measuring frequency spectra, density distributions) enables digital authentication of printed cards, making them resistant to forgery while maintaining simple issuance processes.
4Ease of manufacture
If printed authenticity collation patterns and electronic watermarks are used instead of IC memory, then issuing cost and speed are improved, but verification complexity increases
Solution Approach 1:
The patent replaces physical IC memory reading mechanisms with optical and digital analysis systems. Instead of electrical contacts and chip reading, the verification uses camera-based image capture, optical density measurement, and frequency spectrum analysis of printed patterns. This substitution enables verification of simple printed cards while providing robust authentication through computational analysis.
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 rapid, cost-effective identity and authenticity verification of ID cards, preventing forgery by utilizing density and frequency characteristics of printed images, ensuring secure and efficient issuance and validation processes.
Implementation Method 1
a first captured image obtained by capturing the verification image printed on the ID card via a camera
Implementation Method 2
verify authenticity of the ID card to be verified by comparing density characteristics of each of the first captured image acquired from the memory and the second captured image acquired from the camera
Data Source
AI summary
A issuing apparatus is configured to acquire a first face image obtained by imaging a face of a person, output a verification image including the first face image and verification information for verifying validity to a printer that issues the ID card by printing the verification image on a card-shaped recording medium, and store, in a memory, a first captured image obtained by capturing the verification image printed on the ID card via a camera. A verification apparatus is configured to acquire, as a second captured image, an image obtained by capturing a verification image printed on an ID card to be verified via a camera, and verify authenticity of the ID card to be verified by comparing density characteristics of each of the first captured image acquired from the memory and the second captured image acquired from the camera.