VR Driver Vision Testing With Dynamic Illumination Control
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Solution Overview
Problem
Traditional vision testing methods lack dynamic adjustment of test parameters, leading to less accurate assessments and are not suitable for home use with household devices, limiting accessibility and affordability.
Innovation Solution
Implementing methods and systems that utilize head-mounted displays (HMDs) to create a 3D virtual environment for vision testing, dynamically adjusting visual stimuli based on user head orientation and eye responses, and employing machine learning models to analyze these responses for accurate vision assessment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional vision testing methods are used, then the testing process is simple and accessible, but the assessment accuracy is reduced due to inability to dynamically adjust test parameters
Solution Approach 1:
The patent implements dynamic adjustment of visual stimulus parameters including position, size, contrast, and illumination based on real-time tracking of head orientation and eye movements. The system continuously adapts test parameters during administration rather than using fixed static presentations, enabling accurate vision assessment while maintaining user-friendly operation through automated tracking.
2Reliability
If traditional vision testing methods are used, then the equipment requirements are minimal, but the testing environment cannot be controlled leading to variable results
Solution Approach 1:
The system employs real-time feedback mechanisms by tracking head orientation via IMU sensors and eye position via cameras, then using this feedback to dynamically adjust visual stimulus presentation. This closed-loop control ensures consistent testing conditions are maintained regardless of environmental variations, improving reliability while using consumer-grade components.
3Measurement precision
If professional vision testing equipment is used, then the assessment accuracy is improved, but the cost and accessibility are reduced
Solution Approach 1:
The patent creates a virtual copy of professional vision testing functionality by rendering visual stimuli in a 3D virtual environment using standard HMD displays. Instead of requiring specialized optical equipment, the system uses software-based visual presentations that replicate clinical testing protocols, achieving professional-grade assessment accuracy through virtual simulation rather than physical replication.
4Adaptability or versatility
If static visual stimuli are presented, then the testing procedure is straightforward, but the ability to assess vision under varying conditions is limited
Solution Approach 1:
The system systematically varies multiple stimulus parameters including position in visual field, size, contrast, brightness, and presentation duration based on measured head and eye positions. This multi-parameter adaptation enables comprehensive vision assessment under diverse conditions while the complexity is managed through algorithmic control that automatically adjusts parameters based on sensor input.
Data Source
AI summary
A vision test can be performed based on real-time audio instructions in a virtual environment. An electronic device, such as a head-mounted display, can execute a user application that is configured to enable the vision test. The electronic device can obtain an instruction to implement a target vision test. Based on a determination that the target vision test corresponds to a driver license issuing requirement, the electronic device can load a VR user interface to create a 3D VR environment, determine an illumination scheme, and display a virtual traffic scene on the VR user interface based on the illumination scheme. The virtual traffic scene can include a plurality of traffic signs located at a plurality of distances.