Vehicle HUD Marker Emphasis Adjustment for Blurring
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Solution Overview
Problem
Existing vehicle information display systems cause driver confusion due to the duplication or blurring of object markers on windshields when the distance between the driver and the target object differs from the distance between the driver and the display area, leading to a shift in focus and potential misinterpretation of the object marker's position.
Innovation Solution
An information display device for vehicles that detects target objects and adjusts the emphasis of object markers based on the distance from the vehicle to the target object, suppressing vertical components' emphasis when the distance is long to reduce blurring and confusion, using a head-up display positioned between the driver and the target object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the object marker is displayed with high emphasis on the display area, then the target object can be reliably conveyed to the driver and the driver's attention can be caused to pay, but the object marker becomes blurred or seen in duplicate when the driver gazes at the target object
Solution Approach 1:
The display control unit dynamically adjusts the display characteristics of the object marker based on the detected gaze direction. When the driver's gaze is directed toward the target object, the system suppresses or eliminates the object marker to prevent blurring and duplication. When the gaze is not directed toward the target object, the object marker is displayed with emphasis to ensure reliable conveyance of target presence.
Solution Approach 2:
The system changes the display parameters of the object marker based on the driver's gaze state. By detecting the gaze direction and adjusting the object marker's visibility or emphasis level accordingly, the system optimizes both the reliability of target conveyance and the clarity of the marker, avoiding the blurring issue that occurs with static high-emphasis display.
2Reliability
If the object marker is displayed on the display area positioned between the driver and the target object, then the target object can be emphatically displayed, but the distance difference between the driver's eyes to the display area and to the target object causes focus shift and blurring
Solution Approach 1:
The system uses gaze detection to obtain feedback about the driver's visual state and adjusts the object marker display accordingly. The gaze detection unit continuously monitors the driver's gaze direction, and the display control unit uses this feedback to determine when to suppress or modify the object marker, thereby maintaining focus accuracy and preventing blurring while preserving display effectiveness.
3Reliability
If the object marker is displayed with constant emphasis regardless of distance, then the target object is always visible, but the driver feels confusion when the object marker blurs at long distances
Solution Approach 1:
The system dynamically adjusts the object marker's emphasis level based on the driver's gaze direction rather than maintaining constant emphasis. When the driver is not looking at the target object, the marker is displayed with emphasis for visibility. When the driver gazes at the target object, the marker is suppressed to prevent blurring-induced confusion, thus resolving the contradiction between visibility and driver comfort.
Data Source
AI summary
An information display device for a vehicle includes a object detection sensor that detects a target object positioned around a host vehicle, and a display unit that displays a first object marker which is displayed so as to surround the target object detected by the object detection sensor on a display area positioned between a driver of the host vehicle and the target object, and in a case where a distance from the host vehicle to the target object is long, that displays a second object marker with a degree of emphasis of the vertical components suppressed compared to a degree of emphasis of the vertical components of the first object marker in a case where the distance from the host vehicle to the target object is short.