Head-Mounted Display Tracking in Moving Vehicles
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Solution Overview
Problem
Current VR and AR tracking systems fail to accurately determine the spatial location and rotational orientation of a head-mounted display device when the user is in a moving vehicle, leading to inconsistencies in the virtual space display due to confusion with secondary motions of the vehicle.
Innovation Solution
A system that combines sensors and hardware processors to generate and process vehicle and user information, enhancing the determination of spatial location and rotational orientation of a wearable head-mounted display device by integrating simulated vehicle motion with user motion, allowing for accurate presentation of virtual space views.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If VR/AR tracking systems use head tracking to determine spatial location and rotational orientation, then the system can provide virtual space presentation to the user, but the tracking accuracy deteriorates when the user is in a moving vehicle due to confusion with secondary motions
Solution Approach 1:
The system segments the motion detection into two independent components: vehicle motion detection (via vehicle sensors) and user head motion detection (via head-mounted sensors). By separating these motion sources, the system can independently process and compensate for vehicle motions, preventing confusion with user head tracking and maintaining high tracking accuracy in moving vehicle environments.
Solution Approach 2:
The system introduces vehicle sensors as an intermediary component that detects vehicle motions (acceleration, rotation, position) and provides this information to the tracking system. This intermediary allows the system to compensate for vehicle-induced secondary motions, enabling accurate head tracking even when the user is in a moving vehicle without requiring expensive motion simulators.
2Measurement precision
If the tracking system attempts to compensate for vehicle motions, then the spatial location and rotational orientation determination accuracy improves, but the device complexity increases
Solution Approach 1:
The system uses universal sensor types (accelerometers, gyroscopes, magnetometers) that are already standard in both vehicle systems and consumer head-mounted displays. By utilizing these existing multi-functional sensors for dual purposes (vehicle motion detection and head tracking), the system achieves high determination accuracy without adding specialized complex components or expensive motion simulators.
Solution Approach 2:
The system merges the vehicle sensor data with head-mounted sensor data in a unified processing framework. By combining these data streams and processing them together to determine spatial location and rotational orientation, the system achieves accurate tracking without requiring separate complex compensation hardware, thereby reducing overall system complexity while maintaining high precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively enhances the accuracy of spatial location and rotational orientation determination, ensuring a consistent and accurate virtual space presentation even in motion simulating vehicles, improving user experience without the need for expensive personal motion simulators.
Implementation Method 1
The sensor(s) may be configured to generate output signals conveying vehicle information. The vehicle information may characterize vehicle operations of a vehicle.
Implementation Method 2
The sensor(s) may be configured to generate output signals conveying user information of a user. The user information may characterize motion of a wearable head-mounted display device mounted on the user's head.
Implementation Method 3
The processor(s) may be configured to determine, based on the user information and the vehicle information, spatial location and rotational orientation of the wearable head-mounted display device with respect to a reference frame.
Implementation Method 4
The processor(s) may be configured to determine, based on the user information and the vehicle information, spatial location and rotational orientation of the wearable head-mounted display device with respect to a reference frame.
Data Source
AI summary
Systems and methods for enhancing the accuracy of spatial location and rotational orientation determination of a wearable head-mounted display device while in a motion simulating vehicle are disclosed. Exemplary implementations may: generate output signals conveying vehicle information; generate output signals conveying user information of a user; obtain presentation information; determine, based on the user information and the vehicle information, spatial location and rotational orientation of the wearable head-mounted display device with respect to a reference frame such that accuracy of the determination is enhanced with respect to only using the user information; determine a view of the virtual space that corresponds to the spatial location and the rotational orientation of the wearable head-mounted display device determined; and effectuate, via the wearable head-mounted display device, presentation of the view of the virtual space.