Crosswalk-Aware Driving Assistance Zone Expansion for Early Detection
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Solution Overview
Problem
Detecting pedestrians on crosswalks is challenging due to the mixed presence of white lines and pedestrian silhouettes, leading to potential delays in detection.
Innovation Solution
A driving assistance device that enlarges the driving assistance zone outward upon detecting a crosswalk to encompass the entire zone, reducing the likelihood of delays in target detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the obstacle detection region is set to match the crosswalk shape, then the detection region covers the crosswalk area, but the mixed presence of white lines and pedestrian silhouettes makes detection difficult and causes delays
Solution Approach 1:
The detection system segments the detection region into multiple zones with different detection sensitivities and parameters. The crosswalk region is separated from other areas, allowing the system to apply specialized detection algorithms for crosswalk scenarios where white lines and pedestrian silhouettes are mixed, thereby reducing detection delays while maintaining appropriate coverage area
Solution Approach 2:
The obstacle detection region is made dynamically adjustable based on detected scenarios. When a crosswalk is detected, the system automatically modifies the detection region shape and parameters to optimize for crosswalk conditions, transitioning from a static detection region to a dynamic one that adapts to different environmental contexts, thus improving detection speed without sacrificing coverage
2Loss of time
If the driving assistance zone area is increased to improve detection coverage, then early detection of targets is enhanced, but the system may increase false detections and unnecessary interventions
Solution Approach 1:
Different detection parameters, sensitivities, and algorithms are applied to different zones within the driving assistance region. The crosswalk zone receives specialized detection settings optimized for detecting pedestrians against white line backgrounds, while other zones use standard detection parameters. This localized quality approach allows early detection in critical areas without increasing false detections system-wide
Solution Approach 2:
The system incorporates feedback mechanisms that continuously monitor detection results and adjust detection parameters accordingly. When false detections occur in certain zones, the system learns from these errors and refines its detection algorithms for those specific areas, enabling early detection while maintaining reliability through continuous optimization based on actual performance feedback
Data Source
AI summary
A driving assistance device performs driving assistance for a vehicle when a predetermined target is present in a driving assistance zone that is set on the front side of the vehicle. The driving assistance device is able to change the setting of area of the driving assistance zone. The driving assistance device is configured to, when the setting of the area of the driving assistance zone at the time of detection of a crosswalk on the front side of the vehicle is changeable in an enlarging direction, enlarge the area of the driving assistance zone so as to expand in an outward direction of the vehicle and encompass an entire zone of the driving assistance zone at the time of detection of the crosswalk.