Digital Fingerprinting of Physical Artifacts for Reliable Authentication
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Solution Overview
Problem
Authenticating original physical artifacts, such as artworks, is challenging due to the difficulty in distinguishing high-quality counterfeits from originals, especially for non-experts, and existing methods like expert opinions and certificates of authenticity are costly and susceptible to counterfeiting.
Innovation Solution
A method using digital imaging to capture and process information about a physical artifact, generating a unique digital fingerprint by iteratively capturing high and low entropy areas, employing multiple feature detection processes, and validating the artifact against a previously-generated fingerprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If expert opinions are used to authenticate physical artifacts, then authentication reliability is improved, but cost and time consumption increase
Solution Approach 1:
The patent creates a digital copy (photograph) of the physical artifact and extracts features from this copy to generate a fingerprint. This digital fingerprint can be authenticated automatically without requiring physical inspection by experts, thereby reducing time consumption while maintaining reliability through multiple feature detection processes
Solution Approach 2:
The patent replaces the mechanical system of expert human inspection with an automated digital image processing system. Multiple feature detection processes (SIFT, SURF, ORB, etc.) automatically extract and compare features, eliminating the need for time-consuming manual expert analysis while maintaining authentication reliability
2Measurement precision
If multiple feature detection processes are employed to improve authentication accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the authentication process into multiple independent feature detection stages, each using a different algorithm (SIFT, SURF, ORB, etc.). Each detector focuses on specific feature types, and their results are combined to improve overall accuracy. This segmentation allows complex authentication to be achieved through coordinated simple operations
Solution Approach 2:
The patent implements a universal authentication system that can handle various types of physical artifacts using the same multi-process feature detection framework. The system is designed to work with different image formats, resolutions, and artifact types, reducing the need for specialized complex systems for each case
3Loss of information
If iterative capture of high and low entropy areas is performed, then information completeness is improved, but loss of time increases
Solution Approach 1:
The patent performs preliminary analysis of the initial image to identify high-entropy areas (regions with rich information) and low-entropy areas (regions with repetitive patterns). Based on this preliminary assessment, the system strategically captures additional images focused on high-entropy regions, avoiding unnecessary captures of low-entropy areas, thus completing information gathering efficiently
Solution Approach 2:
The patent applies different capture strategies to different regions of the artifact. High-entropy areas receive focused attention with multiple captures and detailed analysis, while low-entropy areas are captured with lower priority. This local quality approach ensures information completeness where it matters most while reducing overall capture time
Data Source
AI summary
Methods disclosed herein may be conducted as part of a process of generating a unique digital fingerprint of a physical artifact and/or to determine whether the physical artifact within a region of interest can be used for authentication/validation against a unique digital fingerprint of the physical artifact that has been generated. A method includes capturing, by a device, a current digital image of a region of interest containing a physical artifact; and presenting, by the device, an instruction to capture a next digital image of a segment of the region of interest, the instruction comprising a graphical indication of the segment generated based on the current digital image. Another method includes receiving, from a device, a current digital image captured of a region of interest containing a physical artifact; generating, based on the current digital image, data corresponding to a graphical indication of a segment of the region of interest; and transmitting, to the device, the data corresponding to the graphical indication of the segment for use by the device to present an instruction to capture a next digital image of the segment of the region of interest.