Vehicle Detection Region Adjustment for Tilted Driving
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Solution Overview
Problem
The accuracy of detecting front vehicles decreases when the host vehicle becomes tilted, as the imaging region shifts, leading to missed detections and reduced visibility for the driver.
Innovation Solution
A vehicle detecting device that modifies its imaging region based on the vehicle's tilt angle to mitigate shifts, using adjustments in the region range and angle, and a structuring element to absorb offsets between luminous points, ensuring accurate detection and proper light distribution control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the imaging region is fixed when the vehicle tilts, then the device complexity is reduced, but the detection precision of front vehicles deteriorates due to region shift
Solution Approach 1:
The imaging region is dynamically adjusted based on the detected tilt angle of the vehicle. The control unit modifies the imaging region's position and/or size in response to tilt changes, transforming a static detection system into an adaptive one that maintains detection precision under varying vehicle attitudes.
Solution Approach 2:
The system changes the parameters of the imaging region (position coordinates and/or size dimensions) as a function of the tilt angle parameter. By detecting the tilt angle and correspondingly adjusting the imaging region parameters, the system compensates for region shift without adding complex hardware.
2Reliability
If the imaging region is modified to follow vehicle tilt, then the detection precision is improved, but the device complexity increases due to additional processing
Solution Approach 1:
The system implements a feedback loop where the tilt angle detection unit continuously monitors vehicle attitude, and the control unit uses this feedback information to adjust the imaging region in real-time. This closed-loop control ensures reliable detection by automatically compensating for tilt-induced region shifts.
Solution Approach 2:
The control unit acts as an intermediary between the tilt angle detection unit and the imaging device. It processes the tilt angle information and generates appropriate adjustments to the imaging region, serving as a mediator that connects sensor data to actuator control without requiring direct mechanical coupling.
3Measurement precision
If the structuring element is modified to absorb offsets, then the detection accuracy is improved, but the processing time increases
Solution Approach 1:
The system performs preliminary adjustment of the imaging region based on detected tilt angle before actual vehicle detection is performed. By pre-compensating for the region shift caused by tilt, the system eliminates the need for complex post-processing corrections, thereby maintaining detection accuracy while minimizing additional processing time.
Data Source
AI summary
A vehicle detecting device performs a process of detecting a front vehicle using an image that is based on an imaging device provided in a vehicle, and in accordance with a change in an angle of tilt of the vehicle's right-left axis, modifies an imaging region of the imaging device so as to mitigate a shift in the imaging region caused by the change.