On-Vehicle Camera Mounting Deviation Detection
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Solution Overview
Problem
On-vehicle cameras may change their mounting position or angle without driver knowledge due to vibration or external forces, affecting their ability to capture predetermined monitoring regions effectively.
Innovation Solution
An image analysis apparatus that captures and analyzes images from on-vehicle cameras, extracts feature quantities, and compares them against pre-stored normal values to determine if the camera is mounted abnormally, providing accurate detection without human intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If on-vehicle cameras are mounted to capture images of predetermined monitoring regions, then the driving assistance function is provided, but the mounting position or angle may change due to vibration or external force
Solution Approach 1:
The system performs preliminary capture of reference images at predetermined positions and angles during manufacturing or installation. These reference images are stored and used for subsequent comparison to detect any deviations in camera mounting position or angle during vehicle operation, enabling early detection before driving assistance functions are compromised
Solution Approach 2:
The system continuously compares feature quantities extracted from currently captured images against those from reference images, providing feedback on mounting position deviations. When abnormalities are detected, the system can notify the driver or automatically adjust the monitoring region, creating a closed-loop system that maintains reliability despite mounting variations
2Measurement precision
If manual detection of camera mounting position is used, then simple detection is possible, but high accuracy cannot be achieved
Solution Approach 1:
The system replaces manual visual detection with automated image processing and feature quantity analysis. By capturing images and extracting feature quantities through computational algorithms, the system achieves high measurement precision in detecting mounting position deviations without requiring complex mechanical measurement devices or manual intervention
Solution Approach 2:
The system creates a digital copy of the normal mounting state through reference images with predetermined feature quantities. This digital model serves as a template for comparison, enabling accurate detection of deviations without requiring physical measurement tools or complex detection hardware
Data Source
AI summary
An image analysis apparatus is applied to an on-vehicle camera that captures an image of a predetermined monitoring region oriented in a predetermined direction referenced to a vehicle, to analyze an image captured by the on-vehicle camera. The image analysis apparatus includes (i) a storage section that stores a feature quantity of a monitoring region image obtained when an image of the monitoring region is captured by the on-vehicle camera, (ii) an extraction section that acquires an image captured by the on-vehicle camera and extracts a feature quantity of the image captured by the on-vehicle camera, and (iii) a notification section that compares the feature quantity of the image captured by the on-vehicle camera against the feature quantity of the monitoring region image to perform determination whether the on-vehicle camera is mounted in an abnormal position, and notifies a result of the determination.