Head-Up Display Feedback for Driver Trust in ADAS Detection
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Solution Overview
Problem
Drivers lack understanding of the information collected by advanced driver assistance systems (ADAS), making it difficult to trust and effectively utilize these systems, especially in intermediate stages of autonomous driving.
Innovation Solution
A vehicular driving assist system that utilizes cameras and radar sensors to capture and process sensor data, providing visual information through a head-up display, including bounding boxes, vehicle speed, and predicted trajectories, enhancing driver awareness and interaction with ADAS functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ADAS collects and processes sensor data to provide driving assistance information, then the system's measurement precision and detection capability are improved, but the driver's understanding and trust in the system deteriorate due to lack of visibility into collected information
Solution Approach 1:
The system provides real-time visual feedback to the driver through a head-up display (HUD) that shows detected objects, sensor data, and system decisions. This feedback loop allows drivers to see what the system is detecting and how it is processing information, thereby building understanding and trust while maintaining high detection precision
Solution Approach 2:
The head-up display acts as an intermediary between the complex sensor processing system and the driver. It translates raw sensor data and detection algorithms into visual representations that drivers can understand, such as bounding boxes around detected objects and trajectory predictions, bridging the gap between system capabilities and driver comprehension
2Loss of information
If the system displays detailed sensor data and detection information, then driver understanding and trust are improved, but the device complexity and information overload increase
Solution Approach 1:
The information display is segmented into distinct, manageable components: bounding boxes for detected objects, separate trajectory indicators, speed displays, and classification labels. This segmentation allows drivers to process information in discrete units rather than facing a wall of undifferentiated data, reducing perceived complexity while maintaining comprehensive information delivery
Solution Approach 2:
Different visual elements are assigned different levels of detail and prominence based on their importance. Critical information such as detected vehicles and pedestrians receives prominent display with bounding boxes and trajectory lines, while less critical data is displayed with reduced visual weight. This local differentiation optimizes information delivery without overwhelming the driver
3Loss of time
If the system provides comprehensive visual feedback through head-up display, then driver reaction time to environmental events is improved, but the ease of operation deteriorates due to additional visual processing requirements
Solution Approach 1:
The system overlays detection information in the three-dimensional space of the driver's field of view rather than requiring attention to a two-dimensional dashboard display. By projecting bounding boxes and trajectory lines directly onto the visual scene at appropriate depth positions, the system provides enhanced information without requiring the driver to shift focus or divide attention, maintaining ease of operation while improving reaction time
Data Source
AI summary
A vehicular driving assist system includes a plurality of sensors disposed at a vehicle that sense exterior of an equipped vehicle. The system includes a head-up display disposed at the equipped vehicle configured to display one or more visual elements in a field of view of a driver while the driver views forward through a windshield. The system, responsive to processing at an ECU of sensor data captured by the sensors, detects another vehicle present exterior the equipped vehicle. The vehicular driving assist system displays a plurality of visual elements via the head-up display. The plurality of visual elements includes (i) a bounding box appearing to the driver to surround the detected other vehicle when the detected other vehicle is viewable by the driver through the windshield of the equipped vehicle, (ii) a current speed of the detected other vehicle and (iii) a predicted trajectory of the detected other vehicle.