Rotatable Calibration Pattern Display for Vehicle Camera Alignment
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Solution Overview
Problem
Existing calibration methods for vehicle image sensors, particularly for driver assistance systems and autonomous vehicles, struggle to satisfactorily display the entire range of calibration patterns specified by various vehicle manufacturers, necessitating improvements in ease of use and applicability.
Innovation Solution
A rotatable display device with a mounting frame is used to support the calibration pattern display outside the vehicle, allowing precise display of calibration patterns with varying dimensions and orientations, and includes features like rotational position detection and locking mechanisms to ensure accurate alignment and prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed display device is used for calibration patterns, then the display orientation is limited, but the device complexity increases when rotation capability is added
Solution Approach 1:
The display device is made rotatable relative to the mounting frame, allowing dynamic adjustment between horizontal and vertical orientations. This enables the same display device to adapt to different calibration pattern requirements without requiring multiple fixed display units, thus improving versatility while maintaining reasonable device complexity.
2Adaptability or versatility
If the display device is rotated to different orientations, then calibration patterns with different dimensions can be displayed, but the risk of collision with the vehicle increases
Solution Approach 1:
A rotation position detection device is integrated to detect the current rotational position of the display device. This feedback mechanism enables the system to monitor the display orientation and take appropriate measures to prevent collisions, such as issuing warnings or limiting rotation range, thus allowing versatile display orientations while mitigating collision risks.
3Adaptability or versatility
If the display device occupies more space for horizontal display, then calibration patterns with horizontal dimensions can be displayed, but the space efficiency decreases
Solution Approach 1:
The rotatable display device can dynamically switch between horizontal and vertical orientations based on the calibration pattern requirements. When vertical orientation is needed, the display occupies less horizontal space. This dynamic reconfiguration allows the system to maintain versatility in displaying different calibration patterns while optimizing space efficiency according to actual needs.
Data Source
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AI summary
The invention relates to a method and a device for imaging a calibration pattern for calibrating an image sensor of a vehicle, wherein the device comprises: - a display device (12) arranged outside the vehicle for imaging the calibration pattern, - a support frame (14) for supporting the display device (12) against a surface, wherein the display device (12) is rotatable relative to the support frame (14).