Autonomous Driving Scene Complexity Scoring for Safety Validation
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Solution Overview
Problem
Existing autonomous vehicle systems are not adequately assessed for safety and readiness, leading to potential safety threats due to inaccurate evaluations.
Innovation Solution
A method and apparatus for characterizing scenes based on complexity to validate autonomous driving systems, using a computing device to determine scene complexity, calculate a complexity score, and select subsets of scenes for testing to enhance safety and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If autonomous systems are tested with more comprehensive and complicated scenarios, then safety assessment accuracy is improved, but testing time and computational resources increase
Solution Approach 1:
The patent segments the scene assessment process into multiple independent components: scene data acquisition, complexity determination based on specific characteristics, and scoring. This segmentation allows for efficient processing of complicated scenarios by breaking them down into manageable assessment dimensions, thereby improving safety assessment accuracy without proportionally increasing testing time.
Solution Approach 2:
The patent performs preliminary characterization of scenes by determining complexity based on predefined characteristics before actual autonomous system testing. This preliminary action enables the selection and prioritization of critical test scenarios, allowing comprehensive safety assessment to focus on the most challenging scenes first, thus improving assessment accuracy while optimizing testing time allocation.
2Measurement precision
If the complexity assessment methodology is made more detailed and comprehensive, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The assessment system is segmented into distinct functional modules: scene data processing, complexity characteristic determination, and scoring calculation. Each module handles specific aspects of the assessment independently, which improves measurement precision by dedicating specialized processing to each dimension while preventing system-wide complexity from becoming unmanageable.
Solution Approach 2:
The patent transforms the complex concept of scene complexity into measurable parameters and characteristics that can be systematically evaluated. By defining specific complexity characteristics and assigning scores based on these parameters, the system achieves high measurement precision while maintaining manageable system complexity through standardized parameter-based assessment.
Data Source
AI summary
According to one aspect, methods to validate an autonomy system using scenes of various complexities are provided. A computing device obtains a plurality of scenes. Each of the plurality of scenes represents an environment in which a vehicle is driven for a predetermined time. The computing device determines a complexity of each of the plurality of scenes based on characteristics of a respective scene and at least one maneuver required from an autonomous driving system to drive the vehicle through the respective scene without a collision. The computing device calculates a complexity score for each of the plurality of scenes based on the complexity determined for the respective scene and validates the autonomous driving system for driving the vehicle using a subset of the plurality of scenes selected based on the complexity score.


