Digital Side Mirror Camera Calibration With Pattern Board Feedback
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Solution Overview
Problem
Existing digital side mirror systems face issues with camera installation errors, leading to incorrect field of view due to improper alignment of cameras, which can be exacerbated by improper arrangement of pattern boards used for error correction.
Innovation Solution
A digital side mirror system with imaging devices, a display device, and a control device that provides correction information for rearranging the pattern board, including calibration information such as distance, angle, and color display objects to align the pattern board image with reference lines, facilitating accurate installation and correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If error correction operation is performed using pattern board, then camera installation errors can be corrected, but the pattern board must be precisely arranged which increases operation difficulty
Solution Approach 1:
The system captures images of the pattern board through the camera and provides real-time feedback by displaying the captured image on a screen along with guide lines and alignment marks. This feedback loop allows users to see the current alignment status and make adjustments accordingly, transforming a difficult precision task into an intuitive visual alignment process.
Solution Approach 2:
The display screen acts as an intermediary between the camera's field of view and the user's adjustment actions. By showing the captured image with overlaid guide lines and alignment marks, the system mediates the alignment process, making it easier for users to understand and correct camera positioning without requiring complex measurement tools or procedures.
2Measurement precision
If camera direction is adjusted to correct installation errors, then field of view accuracy improves, but additional adjustment operations are required increasing time consumption
Solution Approach 1:
The system enables self-service calibration by allowing users to perform alignment adjustments themselves using the visual feedback provided on the display screen. The guide lines and alignment marks empower users to independently correct camera positioning without requiring professional calibration equipment or extensive technical expertise, thereby reducing both time and cost.
Solution Approach 2:
The system performs preliminary capture of the pattern board image and generates the alignment display before the user makes any adjustments. This preliminary action prepares the visual feedback in advance, allowing users to immediately see the current state and make informed adjustment decisions, streamlining the calibration process.
3Productivity
If pattern board arrangement is not verified, then installation process is faster, but error correction cannot be performed accurately
Solution Approach 1:
The system provides immediate visual feedback by displaying the captured pattern board image with guide lines and alignment marks on the screen. This feedback mechanism allows users to verify pattern board arrangement accuracy quickly during installation, ensuring reliable error correction without significantly increasing installation time, as the verification is integrated into the normal installation flow.
Data Source
AI summary
A digital side mirror system comprises imaging devices disposed on both sides of a vehicle, a display device including a screen for outputting images captured by the imaging device, and a control device. The control device receives a pattern board image, generates calibration information that includes at least one of a distance between a reference line and a center of the pattern board image or an angle of the pattern board image with respect to the reference line, and transmits a calibration image that includes the calibration information to the display device.