Digital Road Map Verification with Sensor Tolerances and Probabilistic Checks
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Solution Overview
Problem
Creating and maintaining high-definition (HD) maps for automated driving functions is time-consuming due to the need for manual data processing and measurement runs, hindering the effective scaling of these maps.
Innovation Solution
A method combining set-based and probabilistic approaches to verify digital road maps, using environmental sensor data to ascertain features with tolerances, make assumptions, and assess reliability through probabilistic methods, ensuring accurate and efficient map verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual data processing and measurement runs are used to create and maintain HD maps, then manufacturing precision is improved, but productivity deteriorates
Solution Approach 1:
The system enables automated verification of HD maps by having the map data itself serve as the verification reference. The method automatically compares sensor data against the digital map without requiring manual intervention, allowing the system to self-verify and update map accuracy while maintaining high productivity
Solution Approach 2:
The patent replaces manual mechanical data processing with automated computational methods. By using algorithmic verification processes that automatically compare sensor measurements with digital map data, the system eliminates time-consuming manual operations while maintaining or improving verification precision
2Productivity
If automated verification methods are used to improve productivity, then reliability deteriorates due to potential errors in automated processes
Solution Approach 1:
The system implements feedback mechanisms where verification results are continuously fed back into the process. The method uses verification outcomes to refine and improve subsequent verification operations, ensuring that automated processes maintain high reliability through continuous self-correction and validation
Solution Approach 2:
The patent performs preliminary verification actions by comparing sensor data against the digital map before final map updates are committed. This preliminary check ensures that only verified accurate data is used for updates, maintaining reliability while enabling automated high-speed processing
Data Source
AI summary
A method for verifying a digital map of a road section. The method includes: receiving environmental sensor data based on a detection of the road section by an environmental sensor; ascertaining, based on the environmental sensor data, a feature of the road section having a first tolerance; verifying, based on the ascertained feature of the road section, a feature of the digital map corresponding to the ascertained feature and having a second tolerance, wherein a set-based method using the two tolerances is used to verify the feature of the digital map, in order to ascertain a verification result, wherein one or more assumptions are made for the set-based method, assessing a reliability of the one or more assumptions by using a probabilistic method; verifying the digital map based on the verification result and based on the probabilistic reliability assessment.