Steering Angle Correction via Image Coincidence Analysis
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Solution Overview
Problem
Conventional steering angle correction methods require precise handling to maximum or minimum steering angles, complicating the process and increasing handling complexity.
Innovation Solution
A method that involves acquiring measurement images of a steered wheel at various steering angles, calculating the degree of coincidence with a reference image using ellipse detection and image matching, and determining a correction value to adjust the steering angle based on the coincidence, thereby simplifying the correction process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional steering angle correction methods are used requiring precise handling to maximum or minimum steering angles, then steering angle neutral point correction can be achieved, but handling complexity increases and the process becomes complicated
Solution Approach 1:
The patent replaces the mechanical/manual steering angle correction method with an automated image processing system. Instead of requiring operators to manually handle the steering wheel to maximum or minimum angles, the system uses cameras to capture images of the steering wheel, processes these images to detect steering angles automatically, and calculates correction values without human intervention. This substitution of mechanical operations with automated vision-based detection resolves the contradiction by maintaining correction precision while eliminating handling complexity.
Solution Approach 2:
The system enables self-service correction by automatically detecting steering angles from images and calculating correction values without requiring operator intervention. The steering angle correction device autonomously performs image acquisition, processing, analysis, and correction value calculation, allowing the system to correct its own steering angle measurements without external manual operations.
2Measurement precision
If special processes are required for steering angle correction, then correction accuracy can be maintained, but the correction process becomes complicated
Solution Approach 1:
The patent replaces complex mechanical correction procedures with automated image processing. Special processes such as manual steering angle measurement, physical steering wheel manipulation, and complex calculation procedures are substituted with automated camera-based detection and image analysis algorithms that simplify the correction process while maintaining or improving accuracy.
Solution Approach 2:
The system creates visual copies (images) of the steering wheel at different angles and uses these copies for analysis instead of requiring physical manipulation of the actual steering mechanism. By working with image copies rather than the physical system, the correction process becomes simpler while maintaining measurement accuracy through digital analysis.
Data Source
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Figure 3A~3E
AI summary
A steering angle is corrected with reduced complicatedness in handling. Provided is a steering angle correction method, including: acquiring a measurement image of a steered wheel (14) in correspondence with a steering angle of a mobile object (10) at which the measurement image is captured; calculating a degree of coincidence between the steered wheel (14) on the measurement image and the steered wheel (14) on a reference image of the steered wheel (14) captured at a reference steering angle; and calculating a correction value used to correct the steering angle, based on the degree of coincidence.