Dashboard Camera Automatic Event Playback via Face Detection
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Solution Overview
Problem
Existing dashboard cameras require users to operate them or remove memory cards to reproduce event recording data, which can be cumbersome and may not allow for easy checking of accident circumstances, especially for users unfamiliar with the camera's functions.
Innovation Solution
A recording reproduction apparatus with a first camera capturing outside images, a second camera capturing images towards a display surface, an event detection unit, a face detection unit, and controllers for storing and reproducing event recording data, allowing for automatic detection and display of relevant data when a human face is detected post-event.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dashboard camera requires manual operation to reproduce event recording data, then the device complexity is reduced, but the ease of operation deteriorates especially for users unfamiliar with the camera functions
Solution Approach 1:
The system performs self-service by automatically detecting when a user approaches the display unit and initiating reproduction of event recording data without requiring manual user input. The face detection unit and reproduction controller work together to autonomously trigger the appropriate function based on user presence, eliminating the need for users to navigate complex menus or understand camera functions.
Solution Approach 2:
The system uses feedback from the face detection unit to control the reproduction behavior. When a face is detected within a predetermined period after event data storage, the system responds by automatically reproducing the relevant footage. This feedback mechanism creates an intuitive interaction loop where user presence directly triggers the desired function without requiring explicit commands.
2Ease of operation
If the dashboard camera uses automatic face detection and reproduction, then the ease of operation improves, but the device complexity increases due to additional cameras and detection units
Solution Approach 1:
The second camera serves multiple functions: it captures images for face detection purposes and also monitors the display unit area to detect user presence. The face detection unit and reproduction controller integrate multiple functions into a unified system that automatically triggers reproduction based on user presence, making the added complexity worthwhile through enhanced functionality.
Solution Approach 2:
The system performs preliminary actions by continuously monitoring for face presence and preparing the reproduction function in advance. When an event is detected and stored, the system remains ready to automatically reproduce the data if a user approaches within the predetermined period, eliminating the need for manual triggering at the moment of reproduction need.
3Productivity
If the system automatically reproduces event data when a face is detected, then the productivity of accident investigation improves, but the loss of time for data storage and detection increases
Solution Approach 1:
The system performs preliminary actions by storing event recording data immediately upon detection and continuously monitoring for user presence in the predetermined period. This preparation ensures that when a user approaches, the data is already ready for instant reproduction, minimizing the total time loss while maintaining high productivity in accident investigation.
Data Source
AI summary
A recording reproduction apparatus includes: a captured data acquisition unit configured to acquire first captured data captured by a first camera that captures an image of an outside of a moving body and second captured data captured by a second camera that captures an image in a direction opposed to a display surface of a display unit; an event detection unit configured to detect an event on the moving body; a recording controller configured to store, when an event has been detected, the first captured data as event recording data; a face detection unit configured to detect a human face from the second captured data; a reproduction controller configured to reproduce the event recording data when a human face has been detected within a period after storage of the event recording data; and a display controller configured to cause the display unit to display the reproduced event recording data.