Windshield Attention Calling System Using Risk-Based Visual Indicators
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Solution Overview
Problem
Existing attention calling systems for vehicle operators often distract the operator by overlaying contour images of traffic participants on the windshield, leading to attention diversion and increased risk of overlooking critical objects in the environment.
Innovation Solution
An attention calling system that uses a light projection device to display visual alerts on the windshield, controlled by a detection unit, classification unit, risk calculation unit, and behavior detection unit, which categorizes and prioritizes objects based on risk and operator recognition, ensuring focused attention without overlaying images, and adjusts visual attractivity if the operator hasn't recognized the object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contour images of traffic participants are overlaid on the windshield to call operator attention, then the operator's attention to traffic participants is improved, but the operator's attention is distracted and may overlook critical objects
Solution Approach 1:
The patent extracts only the essential directional information (azimuth angles) of detected objects and displays it as simplified visual indicators on the windshield, rather than overlaying complete contour images. This extraction approach maintains attention-calling effectiveness while eliminating the harmful distraction effect of complex visual overlays
Solution Approach 2:
The patent applies different display strategies based on the risk level and category of each detected object. High-risk objects receive more prominent visual indicators, while low-risk objects use subtler indicators. This localized quality adjustment ensures critical objects capture attention without creating uniform visual clutter that causes distraction
2Loss of information
If multiple contour images are displayed to show many traffic participants, then comprehensive object information is provided, but operator attention is distracted
Solution Approach 1:
The patent segments the information about multiple detected objects by categorizing them into different risk levels and displaying them with different visual priorities. Instead of showing all objects equally with full contour images, the system divides them into segments (high risk, medium risk, low risk) and applies appropriate visual weighting, maintaining information completeness while improving attention focus
Solution Approach 2:
The patent changes the display parameters (visual prominence, indicator size, color intensity) based on the risk classification of each object. High-risk objects use parameters that maximize visibility and attention, while low-risk objects use parameters that minimize visual interference. This parameter adjustment maintains comprehensive information delivery while preventing attention distraction
Data Source
AI summary
The attention calling system includes the classification unit for classifying an object into a category based on a traffic scene, the risk calculation unit for calculating the risk value with respect to contact with the object based on the category, and the attention calling unit for outputting the visual display in the horizontally extending belt-like range on the windshield of the moving body. The attention calling unit outputs the visual display in the mode adapted to the risk value of the object.