AR Head-Up Display Synchronization with Road Structures
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Solution Overview
Problem
Existing head-up display systems cause driver discomfort due to misaligned positional relationships and different flow rates between augmented reality (AR) support images and actual road structures, leading to VR sickness.
Innovation Solution
A head-up display device that acquires information about target objects from image data, generates a projection image aligned with the traveling direction of the vehicle, and transforms it into a support image viewed from a predetermined direction, ensuring the AR support images are displayed at the same intervals and speed as the road structures, thereby synchronizing their flow with the actual view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display speed of AR support images is updated according to vehicle velocity, then the natural feeling of image flow is improved, but the positional alignment with road structures deteriorates
Solution Approach 1:
The patent applies dynamics by making the display system adaptive to changing vehicle conditions. The control unit dynamically adjusts the display speed of AR support images based on real-time vehicle velocity data, ensuring the images flow naturally with the vehicle's motion while maintaining proper positional alignment with road structures through continuous synchronization.
Solution Approach 2:
The system uses feedback from the imaging device that captures road structures and white lines to continuously monitor and adjust the display position and speed of AR support images. This feedback loop ensures that the virtual images remain properly aligned with actual road features while adapting to changes in vehicle velocity.
2Device complexity
If AR support images are displayed at constant intervals, then the display simplicity is improved, but the synchronization with moving road structures deteriorates
Solution Approach 1:
The system transitions from static constant-interval display to dynamic interval adjustment based on vehicle velocity. The control unit calculates appropriate display intervals that maintain synchronization with road structures while adapting to changing speeds, preserving display simplicity through automated calculation rather than complex manual configuration.
Solution Approach 2:
The patent changes the display parameters (speed and interval) of AR support images based on vehicle velocity. By dynamically adjusting these parameters, the system maintains synchronization with moving road structures without requiring complex display mechanisms, simply by modifying the temporal and spatial parameters of the virtual image output.
3Speed
If the AR support images move faster at higher velocities, then the flow synchronization with actual view is improved, but the positional relationship accuracy with road structures deteriorates
Solution Approach 1:
The control unit uses feedback from the imaging device that continuously captures road structures to monitor the actual position of white lines and other road features. Based on this feedback and the detected vehicle velocity, the system adjusts the display speed of AR support images to maintain both flow synchronization with the actual view and positional accuracy with road structures.
Solution Approach 2:
The patent replaces mechanical synchronization methods with image processing and computational approaches. The control unit uses image data from the imaging device to detect road structures and calculates the appropriate display parameters for AR support images, substituting physical alignment mechanisms with digital image processing and coordinate transformation algorithms.
Data Source
AI summary
A head-up display device displays a virtual image in front of a vehicle, and includes a memory configured to store a program, and a processor. The processor is configured to execute the program and perform a process that includes acquiring information related to a target object recognized from image data received from an imaging device that captures a view in front of the vehicle, generating a projection image to be projected as the virtual image, determining a display position of the projection image along a traveling direction of the vehicle, based on the information related to the target object, using the target object as a reference, transforming the projection image into a support image viewed from a predetermined direction, and projecting the support image in front of the vehicle.