Tailgate Position Detection for Dynamic Camera View Adjustment
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Solution Overview
Problem
Driver assistance systems fail to accurately detect the position of a tailgate and adjust their operations accordingly, leading to inaccurate guidelines and delayed alerts when the tailgate is open, as they assume the tailgate is closed, affecting the representation of the vehicle's travel path and detection of objects behind the vehicle.
Innovation Solution
A system that includes an object identification module to determine whether the tailgate is open or closed based on camera images, adjusting the field of view of the rear camera and the display of guidelines and alerts accordingly, and using side cameras to provide a complete top view image when the tailgate is open.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the driver assistance system assumes the tailgate is closed, then the system operation is simplified, but the accuracy of object detection and guideline representation deteriorates when the tailgate is actually open
Solution Approach 1:
The system dynamically adjusts camera field of view and alert criteria based on real-time tailgate position detection. When the tailgate is detected as open, the camera field of view is adjusted to account for the blocked rear view, and alert distance thresholds are modified to prevent false alarms from objects visible through the open tailgate space.
Solution Approach 2:
The system introduces side cameras as intermediary sensors to detect objects in the area behind the vehicle when the tailgate is open. These side cameras provide complementary viewing angles that fill the gap left by the rear camera's blocked view, enabling accurate object detection regardless of tailgate position.
2Device complexity
If the rear camera maintains a fixed field of view, then the camera system is simpler, but the accuracy of travel path representation deteriorates when the tailgate position changes
Solution Approach 1:
The camera field of view is dynamically adjusted based on tailgate position. When the tailgate opens, the camera rotates or adjusts its viewing angle to compensate for the blocked rear view, ensuring that the displayed travel path guidelines remain accurate representations of the actual vehicle trajectory.
Solution Approach 2:
The system transitions from a single fixed rear camera view to a multi-dimensional camera system that includes side cameras and adjustable rear camera angles. This dimensional expansion allows the system to capture and represent the vehicle's travel path accurately from multiple perspectives depending on tailgate position.
3Device complexity
If the system uses only the rear camera, then the device configuration is simpler, but the completeness of the view behind the vehicle deteriorates when the tailgate is open
Solution Approach 1:
The viewing function is segmented across multiple cameras positioned at different locations. The rear camera captures the central rear area, while side cameras capture the left and right areas behind the vehicle. This segmentation allows the system to maintain a complete view of the area behind the vehicle even when the tailgate is open and blocking the rear camera's view.
Solution Approach 2:
The system merges images and data from multiple camera sources (rear camera and side cameras) to create a comprehensive view of the area behind the vehicle. By combining information from these multiple sensors, the system maintains complete situational awareness regardless of tailgate position.
4Device complexity
If the alert distance is fixed, then the alert system is simpler, but the timeliness of alerts deteriorates when the tailgate position changes
Solution Approach 1:
The alert distance threshold is dynamically adjusted based on tailgate position. When the tailgate is open, the system modifies the alert criteria to account for the changed geometry of the detection area, ensuring that alerts are triggered at appropriate distances and times regardless of whether the tailgate is open or closed.
Data Source
AI summary
A system includes an object identification module, a tailgate position module, and a user interface device (UID) control module. The object identification module is configured to identify at least one of a bumper of a vehicle and a tailgate of the vehicle in an image captured by a camera mounted to the tailgate. The tailgate position module is configured to determine that the tailgate is closed when the bumper is identified in the image, and determine that the tailgate is open when at least one of: the tailgate is identified in the image; and the bumper is not identified in the image. The UID control module is configured to adjust operation of a user interface device based on whether the tailgate is open or closed.