Tailgate Position Detection Using Camera and Image Processing
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Solution Overview
Problem
There is a challenge in determining whether a vehicle tailgate is open or closed, especially when the operator cannot see it from the passenger compartment, which can lead to issues like lost cargo due to the tailgate being inadvertently left open during transport.
Innovation Solution
A system comprising a camera module and processing device that captures images of the environment behind or under the tailgate, determining its position by comparing pixel zones and alerting the operator if it is open, and providing a path to recover lost items by identifying the geographic location where the tailgate was opened.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operator cannot see the tailgate from the passenger compartment, then the operator's view is maintained, but the operator cannot detect whether the tailgate is open or closed
Solution Approach 1:
A camera is installed on the tailgate to capture images of the tailgate position. The camera acts as an intermediary device that the operator cannot see directly, yet provides visual information about the tailgate state through a display device in the passenger compartment. This resolves the contradiction by introducing a mediator that bridges the operator's limited view with the need for tailgate position information.
Solution Approach 2:
The system creates a visual copy of the tailgate position through camera imaging and displays it on a screen in the passenger compartment. Instead of requiring the operator to directly see the tailgate, the system produces a replicated visual representation that conveys the same information, allowing the operator to monitor tailgate status without compromising their view or position in the vehicle.
2Ease of operation
If the tailgate is left open during transport, then access to cargo is maintained, but cargo security is compromised and items may be lost
Solution Approach 1:
The system continuously monitors tailgate position using a camera and provides real-time feedback to the operator through visual display and audible alerts. When the tailgate is detected to be open during transport, the system generates warnings to alert the operator, creating a feedback loop that prevents cargo security issues by making the open tailgate state immediately apparent rather than allowing it to go unnoticed.
Solution Approach 2:
The system performs preliminary detection of tailgate position before cargo loss can occur. By continuously monitoring and alerting the operator to an open tailgate condition, the system enables corrective action (closing the tailgate) before cargo can fall out or be stolen, thus preventing the harmful effect rather than merely responding to it after the fact.
3Measurement precision
If a camera system is installed to detect tailgate position, then tailgate position can be determined, but device complexity increases
Solution Approach 1:
The tailgate itself serves the dual function of being both the object to be monitored and the mounting platform for the monitoring camera. By installing the camera on the tailgate, the system uses the tailgate's own structure to achieve detection, eliminating the need for separate complex mounting structures or additional sensors elsewhere in the vehicle. The tailgate essentially monitors itself through this self-service arrangement.
Solution Approach 2:
The camera system serves multiple functions: it detects tailgate position, provides visual feedback to the operator, generates alerts when the tailgate is open, and can potentially track tailgate movement patterns. This multi-functionality reduces the need for separate systems for each function, thereby managing complexity while achieving comprehensive tailgate position determination and monitoring capabilities.
Data Source
AI summary
A system includes a camera module disposed on a vehicle. The camera module records an image and generates an image signal representing the image. The system further includes a processing device that receives the image signal generated by the camera module and determines whether a vehicle tailgate is open based on the image. A method includes receiving an image signal representing an image captured from a vehicle, processing the image signal, and determining whether a vehicle tailgate is open based on the image.