Windshield Visual Guidance for Driver Gaze Alignment
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Solution Overview
Problem
Existing visual guidance systems for vehicles do not effectively guide the operator's visual line to objects ahead, especially when the operator's position changes within the vehicle, and may distract the operator with multiple contour images displayed on the windshield.
Innovation Solution
A visual guidance device that includes an object recognition unit and a display control unit to display a visual guidance virtual image on the windshield, adjusting its length and position based on the recognized object's status and the operator's position within the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the marking image size is increased to enhance visual attractivity when objects are closer, then the visual attractivity is improved, but the operator may overlook important objects due to excessive visual stimulation
Solution Approach 1:
The patent changes the parameter of visual guidance image characteristics (size, shape, position) based on the operator's position and object status. When the operator is in a standard position, contour images are displayed with normal size. When the operator's position shifts, the system adjusts the image parameters to maintain accurate guidance while avoiding excessive visual stimulation that could cause overlooking of important objects.
Solution Approach 2:
The system dynamically adjusts the visual guidance image characteristics in real-time based on detected operator position changes. The display control unit modifies the contour image parameters adaptively, making the guidance system responsive to operator movements while maintaining appropriate visual intensity to prevent overlooking.
2Device complexity
If the marking image is displayed based only on object position relative to display position, then the display is simple, but the visual line guidance becomes inaccurate when operator position changes
Solution Approach 1:
The display control unit is designed to perform multiple functions: it not only displays contour images based on object position but also adapts the display to account for operator position changes. This multi-functionality allows the same display system to maintain accuracy across different operator positions without requiring separate guidance systems for each position.
Solution Approach 2:
The system incorporates feedback by detecting operator position changes and using this information to adjust the visual guidance image display. The display control unit receives input about operator position and modifies the contour image characteristics accordingly, creating a closed-loop system that maintains guidance accuracy despite operator movement.
3Reliability
If multiple contour images are displayed for various traffic participants, then all objects are highlighted, but operator attention becomes distracted
Solution Approach 1:
The patent applies local quality by displaying contour images with differentiated characteristics based on their importance and the operator's current visual attention needs. Rather than uniformly displaying all detected objects with the same visual weight, the system adjusts the display characteristics of individual contour images to highlight the most relevant objects while minimizing distraction from less critical ones.
Data Source
AI summary
To reduce a chance that the driver overlooks the object that should be seen, a visual guidance device for guiding a visual line of a driver of the vehicle to an object existing ahead of the vehicle includes an object recognition unit for recognizing the object, and a display control unit for causing the display device to display the visual guidance virtual image for guiding the driver's visual line to a position corresponding to the object recognized by the object recognition unit on a windshield of the vehicle. The display control unit sets a length of the visual guidance virtual image to be displayed by the display device in the vehicle width direction to a length in accordance with a status of the object existing ahead of the vehicle.