Vehicle Driving Assist Apparatus Sign Recognition Logic
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional driving assist apparatuses for vehicles often erroneously recognize road signs from adjacent roads, leading to incorrect information being displayed to drivers, particularly at intersections where signs from sub-roads are mistakenly identified as belonging to the main road.
Innovation Solution
A driving assist apparatus that includes road sign recognition, display, and prohibition means to determine if a recognized sign is a point-specific sign, and if so, only displays it if the vehicle is traveling on a road with a speed limit below a set threshold or if the road type is not an expressway, thereby preventing erroneous displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If road sign recognition is performed for all signs within the recognition range, then the driver receives comprehensive sign information, but erroneous recognition of signs from adjacent roads occurs
Solution Approach 1:
The patent applies local quality by differentiating the treatment of road signs based on their type and location. Point-specific signs (stop signs, no entry signs) are subject to additional verification against road map data to ensure they apply to the vehicle's current road, while sectional signs are treated differently. This selective verification approach ensures that signs are only displayed when they are relevant to the vehicle's path, eliminating erroneous information while maintaining comprehensive coverage.
2Reliability
If the recognition range is limited to reduce erroneous recognition, then accuracy improves, but signs on adjacent roads that should be recognized are missed
Solution Approach 1:
The patent changes the parameter of verification by introducing road map data as an additional criterion for recognizing point-specific signs. Instead of relying solely on the physical recognition range, the system verifies whether the recognized sign corresponds to the vehicle's current road according to road map information. This parameter change allows the system to maintain a wide recognition range while filtering out erroneous signs through logical verification.
3Loss of time
If point-specific sign information is displayed immediately upon recognition, then the driver receives timely information, but erroneous information may be displayed
Solution Approach 1:
The patent applies preliminary action by performing verification against road map data before displaying point-specific sign information. The system proactively checks whether the recognized sign corresponds to the vehicle's current road using pre-stored road map information, and only displays the sign after this preliminary verification confirms its relevance. This prevents erroneous information from being displayed while maintaining timely notification.
Data Source
AI summary
The disclosed is a driving assist apparatus for a vehicle which can reduce the frequency at which information of a stop sign provided for an adjacent road is provided to a driver. The driving assist apparatus has a display control section which operates when a newly recognized road sign is a particular sign and determines whether or not a speed limit is equal to or lower than a display prohibition speed. The display control section does not display the mark of the recognized road sign on a display when the speed limit is higher than the display prohibition speed and displays the mark of the recognized road sign on the display when the speed limit is equal to or lower than the display prohibition speed.