3D Digital Head Model for Secure Identity Verification

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Solution Overview

Problem

Conventional identification documents with single-view passport photos limit visual confirmation of the document owner, making it difficult to verify authenticity and identity.

Innovation Solution

Incorporating a digital head model into identification documents that allows for a second view of the person to be digitally captured, enabling a three-dimensional representation by using model information embedded within the document, which can be optically or electronically detected and processed to enhance both visual and machine-biometric comparisons.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single-view passport photo is used in identification documents, then the document structure remains simple and easy to manufacture, but the ability to visually identify and verify the document owner is limited

Engineering Contradiction:
Improveidentification accuracyVSAvoiddocument structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent transitions from a single two-dimensional passport photo to a three-dimensional digital head model that can be viewed from multiple angles. This dimensional enhancement allows observers to examine facial features from different perspectives, significantly improving identification accuracy while maintaining a relatively compact document structure through the use of compressed digital data.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent creates a digital copy (3D head model) of the person's head that can be virtually rotated and viewed from multiple angles. This digital replica replaces the need for multiple physical photographs, achieving enhanced identification capability without proportionally increasing document complexity.

Inventive Principle:
Principle #26Copying

2Reliability

If multiple photographs showing different views are included in the identification document, then visual identification capability is improved, but the document size and complexity increase

Engineering Contradiction:
Improvevisual identification capabilityVSAvoiddocument area
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

Instead of adding more two-dimensional photographs that would consume additional document space, the patent implements a three-dimensional digital head model. This single 3D data structure provides unlimited viewing angles without requiring additional physical space on the document, efficiently resolving the conflict between identification capability and document area.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The 3D head model serves multiple functions simultaneously: it can be viewed from any angle, provides detailed facial feature information, and can be processed by both human observers and machine systems. This multi-functionality replaces what would otherwise require multiple separate photographs, reducing overall document area requirements.

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

3Measurement precision

If a three-dimensional digital head model is implemented, then both visual and machine-biometric comparison accuracy are improved, but the processing complexity and computational requirements increase

Engineering Contradiction:
Improvebiometric comparison accuracyVSAvoidprocessing complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The 3D head model is designed to be self-descriptive, containing intrinsic geometric and photometric information that enables both visual inspection and automated biometric processing. The model's structured data format allows systems to automatically extract relevant features for comparison without requiring complex preprocessing, reducing processing complexity despite the enhanced three-dimensional representation.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP2711868B1Identification device
Publication Date: 2017.04.12 BUNDESDRUCKEREI GMBH
  • EP2711868B1 patent drawing
  • EP2711868B1 patent drawing
  • EP2711868B1 patent drawing

AI summary

The invention relates to an identification device for identifying a person on the basis of an identification document comprising an image of a first view of the person, comprising a capture device (701) for capturing the image, and a processor (703) configured to generate model information on the basis of the captured image, which enables a digital capture of a second view of the person.