Dynamic Background Image Generation for Moving Object Analysis
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Solution Overview
Problem
Existing moving information analysis systems fail to accurately update heat maps when the layout of a monitored area changes, leading to privacy concerns and inaccurate data representation, as they rely on static floor plans that do not reflect changes in camera imagery.
Innovation Solution
A system comprising multiple cameras and a server that generates and updates background images periodically or upon event detection, allowing for the accurate superimposition of moving information onto updated background images, ensuring privacy protection and easy change monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a static floor plan is used as the basis for heat map images, then the system structure is simple and easy to implement, but the accuracy of moving information analysis deteriorates when the layout changes
Solution Approach 1:
The patent replaces the static floor plan with a dynamic background image that can be automatically updated to reflect current layout conditions. The background image is generated from camera imagery and can be regenerated when layout changes occur, ensuring the analysis baseline always matches the actual environment without requiring manual floor plan redrawing.
Solution Approach 2:
The patent creates a visual copy of the actual imaging region from camera footage to serve as the background image. This copy automatically reflects the current layout through image processing, eliminating the need to manually update floor plans when layouts change, thus maintaining accuracy while keeping the system simple.
2Measurement precision
If the floor plan is updated to reflect layout changes, then the accuracy of heat map analysis is improved, but privacy of persons in the imaging region is compromised
Solution Approach 1:
The patent extracts only the background environmental information from camera imagery while deliberately excluding personal information. Through image processing, the system separates the static background (layout, furniture, fixtures) from moving objects (persons), using only the background for heat map analysis and thus preventing privacy infringement while maintaining accuracy.
Solution Approach 2:
The background image serves as an intermediary that indirectly represents the layout without directly exposing personal information. Instead of using raw camera footage containing persons or manually updated floor plans that might reveal identities, the processed background image acts as a privacy-protecting mediator that retains only essential spatial information.
3Measurement precision
If background images are updated frequently to maintain accuracy, then the precision of moving information analysis is improved, but the system complexity and processing load increase
Solution Approach 1:
The patent implements periodic background image updates triggered by specific events rather than continuous updates. The system automatically regenerates the background image when detecting layout changes through camera monitoring or user input, and allows manual updates when needed, creating an event-driven update mechanism that balances accuracy with system simplicity.
4Adaptability or versatility
If manual updates of background images are required, then flexibility and adaptability are improved, but the ease of operation deteriorates
Solution Approach 1:
The patent enables the system to automatically update its own background image without requiring manual intervention. Through automatic detection of layout changes and self-triggered image regeneration, the system serves itself, maintaining high adaptability to layout changes while preserving ease of operation by eliminating the need for users to manually update backgrounds.
Data Source
AI summary
Each of cameras generates a background image of an imaging region captured by the camera, extracts moving information regarding a staying position or a passing position of a moving object in the imaging region of the camera, and transmits the background image and moving information of the moving object in a specific period to a server in response to a transmission request from the server or an input device. In a case where a first moving information analysis image in which moving information of a moving object in an imaging region of a first camera is superimposed on the background image transmitted from the first camera among the plurality of cameras is generated and displayed on a monitor, the server generates a second moving information analysis image in which moving information of a moving object in an imaging region of a second camera is superimposed on the background image transmitted from the second camera which is different from the first camera in response to a camera switching operation, and displays the second moving information analysis image on the monitor.