Road Sign Validation via Map Data and Sensor Clusters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current navigation applications face challenges in providing real-time and accurate updates of road signs due to infrequent map data updates and sensor misclassifications, leading to unreliable navigation assistance.
Innovation Solution
A system and method for validating road signs by determining transition locations using map data and sensor data clusters, classifying road signs as region start or end signs based on link type transitions, and updating map data for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are employed to detect road signs in real-time, then navigation accuracy is improved, but misclassification of non-road signs occurs leading to increased data processing load
Solution Approach 1:
The patent introduces map data as an intermediary validation layer between sensor detection and final road sign identification. The system cross-references sensor-detected signs with pre-stored map data containing road sign locations and types, using this intermediary data source to filter out misclassifications without requiring complex processing algorithms
Solution Approach 2:
The system implements a feedback mechanism where detected road signs are validated against map data, and the results are used to confirm or reject sensor detections. This feedback loop enables the system to automatically correct misclassifications by comparing sensor data with authoritative map information, reducing false positives without increasing processing complexity
2Reliability
If map data is updated frequently to reflect real-time road sign changes, then navigation reliability is improved, but data update costs and processing requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-storing road sign data in map databases before it is actually needed for navigation. Map data including road sign locations, types, and transition locations is maintained in advance, allowing the system to quickly validate sensor detections without requiring real-time map updates, thus maintaining reliability while avoiding frequent expensive data updates
Data Source
AI summary
A system, a method, and a computer program product for validating a road sign are provided. The method comprises determining a transition location associated with the road sign using map data. The transition location is at least one of a map region start location or a map region end location. The method further comprises determining road sign data associated with the road sign using a sensor data cluster. The method further comprises determining a validity of the road sign based on the road sign data and the transition location.