Onboard Camera Installation Error Detection Without Markers
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Solution Overview
Problem
Existing onboard camera installation error detection technologies rely on markers, limiting their applicability and accuracy, as they cannot determine proper installation positions without predefined marker dispositions.
Innovation Solution
An installation error display and detection apparatus that uses feature points from vehicle images, such as the bumper, to determine proper camera positioning without markers, allowing for real-time deviation assessment and notification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If markers are used to detect installation position deviation, then the detection method can be implemented, but the applicability is limited due to disposition restrictions of markers
Solution Approach 1:
The patent extracts the detection function from marker-based systems and relocates it to feature points inherent in the vehicle structure. By removing the dependency on externally attached markers, the system achieves universal applicability to any onboard camera without requiring specific marker dispositions on the vehicle body.
Solution Approach 2:
The vehicle itself provides the detection reference through its inherent feature points (such as corners of the front grille, headlights, or bumper). The system uses the vehicle's own structural features as the reference frame, eliminating the need for external markers and enabling self-contained installation verification.
2Measurement precision
If markers are provided on the vehicle body, then installation error can be detected, but the camera must be disposed in a position to photograph the marker
Solution Approach 1:
The feature points are selected from multiple potential locations on the vehicle body (front grille corners, headlight corners, bumper corners, etc.), providing multiple possible reference frames. This universality allows the system to work with cameras mounted at various positions without requiring specific marker visibility, thereby improving both measurement precision and installation flexibility.
3Adaptability or versatility
If feature points are used instead of markers, then applicability to any onboard camera is achieved, but a method to determine proper installation position without markers is needed
Solution Approach 1:
The patent establishes predetermined standard positions for feature points in the image coordinate system before actual installation verification. These reference positions are stored in advance, allowing the system to compare actual captured feature point positions against the predetermined standards to determine whether the camera is properly installed, thereby solving the measurement difficulty without requiring markers.
Data Source
AI summary
An installation error detection apparatus of an onboard camera includes: an input portion that receives a photographed image; a storage portion that stores position information of a feature point of the vehicle; a feature point detection portion; a determination portion that determines whether the installation position of the onboard camera is the proper position; and a notification portion that informs installation defect of the onboard camera. The notification portion calculates the installation position of the onboard camera required to minimize the deviation amount and corrects the photographed image by the onboard camera. The notification portion detects the feature point and calculates a similarity degree of the position of the feature point and the position information. The notification portion determines the installation defect of the onboard camera and informs the installation defect. The notification portion determines that a vehicle body is deformed and informs the vehicle body being deformed.