Context-Aware Face Recognition Control for Privacy Protection

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Solution Overview

Problem

Face recognition techniques pose a risk of violating privacy and human rights, particularly when used in inappropriate environments such as public places or when applied to large numbers of unspecified individuals, necessitating a control mechanism to prevent such violations.

Innovation Solution

An AI system that includes an image obtaining unit, person estimation unit, and status monitoring unit to determine the appropriateness of face recognition processing based on environmental and contextual factors, allowing control over the execution and output of face recognition processing to prevent inappropriate use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If face recognition processing is performed without restrictions, then productivity and functionality are improved, but privacy violations and human rights infringements occur

Engineering Contradiction:
Improveface recognition processing efficiencyVSAvoidprivacy violation risk
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the operational parameters of face recognition processing by introducing environmental context parameters (public place detection, number of people detection) that dynamically control whether processing should be executed. This transforms a binary on/off control into a multi-parameter decision system that adjusts processing behavior based on detected conditions.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent introduces an intermediary control mechanism that sits between the face recognition processing unit and the output stage. This intermediary monitors processing conditions and can block or allow output based on detected environmental factors, effectively mediating between the processing function and potential privacy harms.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If face recognition is performed in public places or on large numbers of people, then the system's versatility and application range are improved, but the risk of privacy violations and human rights infringements increases

Engineering Contradiction:
Improveapplication range of face recognitionVSAvoidprivacy violation risk
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces new control parameters (public place detection, number of people threshold) that modify the operational behavior of face recognition processing. When these parameters indicate high-risk conditions, the system changes its processing mode to prevent output, thereby adapting its versatility to avoid harmful applications.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent applies preliminary anti-action by detecting potential privacy violation conditions before face recognition processing occurs. By identifying public places and large crowds in advance, the system prevents processing from occurring in the first place, rather than attempting to mitigate harms after they occur.

Inventive Principle:
Principle #9Preliminary anti-action

3Object-affected harmful factors

If environmental monitoring and control mechanisms are added to face recognition systems, then privacy protection is improved, but device complexity increases

Engineering Contradiction:
Improveprivacy violation riskVSAvoidsystem structure complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent applies universality by designing control units that can detect multiple different conditions (public places, number of people, other environmental factors) using a unified architecture. This multi-functional approach allows the system to handle various privacy risk scenarios through a single integrated control mechanism rather than separate systems for each condition.

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

Solution Approach 2:

The patent merges the environmental monitoring function with the face recognition control function into an integrated system. The status monitoring unit and estimation control unit work together with the face recognition processing unit as a unified system, reducing overall complexity compared to having separate independent monitoring and control systems.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4586221A1Control apparatus, control method, and storage medium
Publication Date: 2025.07.16 CANON KK
  • EP4586221A1 patent drawingFigure 1
  • EP4586221A1 patent drawingFigure 2
  • EP4586221A1 patent drawingFigure 3

AI summary

A control apparatus includes an image obtaining unit configured to obtain an image including a person, a person estimation unit configured to execute estimation processing to estimate information about the person based on the image and output a result of the estimation processing, a status monitoring unit configured to determine a use status of the estimation processing by the person estimation unit, and an estimation control unit configured to limit at least one of the estimation processing and the output of the result of the estimation processing by the person estimation unit based on a result of the determination of the use status by the determination unit.