Composite Image Authentication via Perceived Distance Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current security features in identification documents and valuable documents are vulnerable to tampering and counterfeiting, as machine vision systems are not effectively used to verify the existence and authenticity of three-dimensional security features.
Innovation Solution
A system comprising a reader with multiple cameras and a computer that captures and compares images of composite images floating above or below a sheeting, calculating the perceived distance between the sheeting and the composite image, and referencing a database to authenticate the document by matching the calculated distance with stored floating distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional security laminates with floating images are used in identification documents, then visual authentication capability is improved, but vulnerability to tampering and counterfeiting increases due to lack of automated verification
Solution Approach 1:
The patent replaces manual visual inspection of security features with an automated machine vision system. Multiple cameras capture images of the floating composite image, and a computer processes these images to calculate the perceived distance between the composite image and the sheeting. This automated optical measurement system substitutes for human inspection, enabling reliable verification of security features while preventing tampering and counterfeiting.
2Measurement precision
If machine vision systems are implemented to verify three-dimensional security features, then detection accuracy is improved, but system complexity increases
Solution Approach 1:
The patent utilizes the perceived distance dimension as an additional verification parameter. By capturing images from multiple camera positions and calculating the perceived distance between the composite image and the sheeting, the system adds a dimensional aspect to the verification process. This approach improves measurement precision by incorporating depth information while managing system complexity through computational image processing rather than complex mechanical structures.
Data Source
AI summary
A system for reading and authenticating a composite image in a sheeting. A exemplary embodiment of the invention provides a system for reading and authenticating a sheeting including a composite image that appears to the unaided eye to be floating above or below the sheeting or both. The present invention also relates to methods of reading and authenticating a composite image that appears to the unaided eye to be floating above or below the sheeting or both.