Multi-Tier Machine Learning for Camera-Based Document Authentication

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Solution Overview

Problem

Existing document authentication systems require specialized devices to scan for specific security measures, making them difficult to adapt to different documents and source, and are not easily accessible on ubiquitous camera-enabled devices.

Innovation Solution

A multi-tier machine learning model using a camera-enabled device to authenticate documents, where a first tier identifies security features and a second tier determines authenticity, with the option to adjust thresholds based on user input and historical data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If specialty devices are programmed to scan for specific security measures, then authentication accuracy is improved, but device complexity and difficulty to source increase

Engineering Contradiction:
Improveauthentication accuracyVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies universality by creating an authentication system that can handle multiple document types and security features through a single device. The system uses a camera to capture images and machine learning models to identify various security features (holograms, watermarks, security threads, microprinting) across different document versions, making the device versatile rather than specialized for one document type.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent replaces complex specialized scanning devices with a standard camera and software-based authentication system. Instead of using dedicated hardware scanners for each security feature, the system uses image capture and processing algorithms to detect and verify security features, substituting mechanical/scanned systems with optical and computational approaches.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If specialty devices are programmed for specific security measures, then authentication reliability is improved, but ease of operation and accessibility worsen

Engineering Contradiction:
Improveauthentication reliabilityVSAvoidease of operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system enables self-service authentication where the end-user performs verification themselves using a smartphone camera, eliminating the need for specialized equipment or expert operators. The machine learning model automatically processes the captured image and provides authentication results, making the process accessible to ordinary users without training.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent introduces a software intermediary (the authentication application with machine learning models) that mediates between the user and the complex authentication process. The user simply captures an image, and the intermediary handles feature detection, verification, and decision-making, simplifying the user interface while maintaining reliable authentication.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If documents have multiple versions with different security features, then adaptability is improved, but device complexity and programming difficulty increase

Engineering Contradiction:
Improveadaptability to different documentsVSAvoidprogramming difficulty
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies dynamics by using machine learning models that can adapt to different document versions dynamically. Instead of hardcoding rules for each document type, the system uses trained models that learn to identify security features across various versions (different years, designs, security measures) and adjust their detection parameters accordingly, enabling flexible adaptation without reprogramming.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system handles document version variations by changing detection parameters through machine learning. The models are trained on diverse datasets representing different document versions and security features, allowing the system to adjust its detection thresholds, feature sets, and verification criteria based on the specific document type being authenticated, rather than requiring explicit programming for each variation.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12387515B2Document authentication using multi-tier machine learning models
Publication Date: 2025.08.12 CAPITAL ONE SERVICES LLC
  • US12387515B2 patent drawing
  • US12387515B2 patent drawing
  • US12387515B2 patent drawing

AI summary

Methods and systems are described herein for providing multi-tier machine learning model processing for document authenticity. A document authentication system built based on the current disclosure may rely on a camera to capture an image of a document and use a multi-tiered machine learning infrastructure to identify security features associated with the image of the document and determine based on those features whether the document is authentic. Furthermore, using the disclosed methods and system enable the provider of the machine learning model to improve the document authentication system by training the multi-tier machine learning model based on millions of interactions collected as part of processing. In addition, the document authentication system enables tracking where/when particular instances of documents are scanned. Based on the tracking, the document authentication system may further identify instances of documents that are not authentic.