Vehicle Camera Image Compensation for Mounting Tolerance Errors
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Solution Overview
Problem
The mounting state of cameras in vehicle-based monitoring systems can change due to manufacturing tolerances, assembly variations, or environmental factors, leading to inaccurate image information provided to drivers, which can result in erroneous parking or driving decisions.
Innovation Solution
A camera image compensating apparatus that detects baseline and vehicle body contours from image signals, calculates reference and current coordinate values, compares these to determine angle changes, and adjusts camera parameters to provide accurate image information by applying correction information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If camera mounting state changes occur due to manufacturing tolerances and assembly variations, then the system becomes more adaptable to different installation conditions, but the image accuracy and reliability deteriorate
Solution Approach 1:
The system dynamically changes camera parameters (focal length, aperture, orientation angles) based on detected mounting state variations. By calculating the actual mounting position and angle from captured images and comparing them with reference values, the system adjusts parameters to compensate for deviations, thereby maintaining image accuracy despite mounting variations
Solution Approach 2:
The system implements a feedback mechanism where captured images are continuously analyzed to detect mounting state changes. The detected variations are fed back to adjust camera parameters in real-time, ensuring that image accuracy is maintained despite changes in mounting conditions
2Measurement precision
If camera parameters are adjusted to compensate for mounting changes, then image accuracy is improved, but the system complexity increases
Solution Approach 1:
The system performs self-calibration by automatically detecting its own mounting state from captured images and adjusting its parameters accordingly. The camera system uses its own output images to determine mounting variations and compensates for them autonomously without requiring external calibration equipment or manual intervention
Solution Approach 2:
The system combines multiple functions into a single integrated process: image capture, mounting state detection, parameter calculation, and compensation are all performed by the same camera system. This multi-functionality reduces the need for separate calibration devices and simplifies the overall system architecture
Data Source
AI summary
Disclosed is a camera image compensating apparatus for a vehicle, including a detecting unit which detects a base line and a vehicle body contour line; a coordinate storing unit which stores a first reference image coordinate value and a second reference image coordinate value; a first coordinate calculating unit which calculates a first base line image coordinate value and calculates a first vehicle body contour line image coordinate value; a coordinate comparing unit which compares the first reference image coordinate value and the first base line image coordinate value and compares the second reference image coordinate value and the first vehicle body contour line image coordinate value; and a correcting unit which calculates angle change information of the camera, calculates correction information based on the angle change information, and corrects the camera parameter using the correction information.