Image Processing Device for Privacy Mode Switching

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Solution Overview

Problem

Existing security systems face challenges in balancing privacy and security, as they often require users to choose between protecting their privacy and maintaining security, leading to issues such as continuous alarms and incomplete security coverage when individuals are alone at home.

Innovation Solution

An image processing device and method that allows for setting privacy modes for registered objects, enabling the generation of processed images that obscure privacy zones upon request, ensuring both privacy and security without being one-sided by automatically switching to privacy mode when authorized individuals are present, using features like face recognition and voice authentication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If security cameras continuously monitor and record all areas, then security coverage is improved, but privacy invasion increases

Engineering Contradiction:
Improvesecurity coverageVSAvoidprivacy invasion
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by differentiating treatment of different spatial zones. The monitoring area is divided into public zones (fully monitored) and private zones (protected from monitoring). The camera system dynamically adjusts its monitoring behavior based on location, applying full security coverage to public areas while providing privacy protection in private areas such as bathrooms and bedrooms.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system dynamically adjusts monitoring behavior based on real-time conditions. When authorized persons are detected in private zones, the system automatically switches between monitoring modes, temporarily suspending recording in those zones. This dynamic adaptation allows the system to balance security needs with privacy rights based on current situational context.

Inventive Principle:
Principle #15Dynamics

2Object-affected harmful factors

If privacy protection is enhanced by obscuring images of authorized persons, then privacy invasion is reduced, but security monitoring capability deteriorates

Engineering Contradiction:
Improveprivacy invasionVSAvoidsecurity monitoring capability
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent segments the image processing into distinct functional components: detection (identifying authorized persons), classification (determining their presence in private zones), and selective processing (applying privacy protection only to specific regions and persons). This segmentation allows the system to preserve security monitoring capabilities while applying privacy protection only where necessary.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system introduces an intermediary processing layer between the camera and the recording/storage system. This intermediary component (the image processing device) acts as a mediator that receives raw images, applies selective privacy protection to authorized persons in private zones, and then passes the processed images to the recording system. This intermediary enables both security monitoring and privacy protection to coexist.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Object-affected harmful factors

If the system blurs or reduces picture quality around detected persons, then privacy is protected, but detection precision and security analysis are compromised

Engineering Contradiction:
Improveprivacy protectionVSAvoiddetection precision
Core Design Contradiction:
Object-affected harmful factorsVSMeasurement precision

Solution Approach 1:

The system performs preliminary detection and identification of authorized persons before applying privacy protection. The detection phase occurs first, identifying persons and determining their authorization status and location. Only after this preliminary action is complete does the system apply blurring or quality reduction. This sequential approach ensures detection precision is maintained during the critical identification phase.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The privacy protection is applied locally and selectively rather than globally. Only specific regions containing authorized persons in private zones are blurred or have reduced picture quality. Other areas of the image maintain full resolution and clarity, preserving detection precision for security-relevant elements while protecting privacy where appropriate.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP3540620B1Image processing device and image providing method therefor
Publication Date: 2023.10.11 HANWHA VISION CO LTD
  • EP3540620B1 patent drawingFigure 1
  • EP3540620B1 patent drawingFigure 2
  • EP3540620B1 patent drawingFigure 3A~3C

AI summary

Provided are an image processing device and an image providing method therefor. The image providing method performed by the image processing device includes setting a privacy mode of each of a plurality of registered objects; obtaining a first image of a monitoring zone from a camera; changing to a privacy mode of an object first appearing in the monitoring zone among the plurality of registered objects; and in the privacy mode, in response to a request for the first image from at least one of the remaining objects, generating a second image in which a privacy zone preset by the appearing object is processed in the first image.