Vehicle Road Sign Display System Using Front Vehicle Trajectory Validation
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Solution Overview
Problem
Existing driving support systems may incorrectly recognize traffic regulations, leading to inappropriate warnings for drivers, as they rely solely on image recognition without considering the driving state of adjacent vehicles or the precision of map data.
Innovation Solution
A sign information display system that uses a camera and radar to recognize road signs and determine the driving state of adjacent vehicles, adjusting the display of sign information based on vehicle velocity, deceleration rate, and lane direction to provide accurate warnings, and incorporates map data for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the system displays sign information based solely on image recognition, then the system complexity is reduced, but the reliability of sign recognition deteriorates due to incorrect recognition
Solution Approach 1:
The patent combines multiple information sources (image recognition results, map data, front vehicle recognition data) to determine whether to display sign information. This merging of multiple data streams allows the system to cross-validate information and reduce false positives, thereby improving reliability without requiring a complete redesign of the system architecture.
Solution Approach 2:
The patent introduces map data as an intermediary layer between image recognition and the final display decision. The map data provides prior knowledge about road signs at the vehicle's current location, which mediates the relationship between raw image recognition results and the displayed information, filtering out incorrect recognitions.
2Measurement precision
If the system uses only image recognition for sign detection, then the measurement precision is limited, but the loss of information is reduced
Solution Approach 1:
The system merges image recognition results with map data containing pre-stored road sign information. This combination allows the system to achieve higher measurement precision by comparing real-time recognition with expected sign data from maps, while the map data also serves to confirm the validity of recognized signs, reducing information loss.
3Productivity
If the system displays all recognized sign information, then the productivity of information provision is improved, but the object-affected harmful factors increase due to incorrect warnings
Solution Approach 1:
The system uses front vehicle recognition data as feedback to validate sign information. By observing whether the front vehicle is following a road sign (through trajectory analysis), the system can confirm the validity of recognized signs before displaying them to the driver, thereby reducing incorrect warnings while maintaining high information provision productivity.
Solution Approach 2:
The system performs preliminary validation of recognized signs by comparing them with map data and front vehicle behavior before displaying information to the driver. This preliminary action filters out potentially incorrect recognitions, preventing harmful false warnings while maintaining efficient information delivery.
Data Source
AI summary
In a sign information display system or method, if a road sign is recognized by a sign recognition device, a display control device determines whether or not it will cause a sign information display device to display first sign information, which is information concerning the road sign, on the basis of a driving state of a front vehicle driving in front of the vehicle.