Extended Reality Motion Separation for Moving-Platform Displays
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Solution Overview
Problem
Existing extended reality systems struggle to accurately control the motion of electronic information displayed in virtual or physical environments, particularly for portable devices that move within a physical environment, leading to errors in the display of virtual content due to the motion of the device and the underlying moving platform.
Innovation Solution
The system employs simultaneous localization and mapping (SLAM) techniques to detect and account for the motion of a moving platform, using optical tracking data to determine an anchoring location for virtual content, and separates device motion into components relative to the platform and the fixed reference frame, adjusting display accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the device displays virtual content while moving on a moving platform, then the device can be freely moved within the physical environment, but the display accuracy of virtual content deteriorates due to motion errors
Solution Approach 1:
The patent segments device motion into two independent components: motion relative to the moving platform and motion of the platform itself. By using separate tracking systems (optical tracking for platform motion, inertial sensors for device motion relative to platform), the system can independently compensate for each component, thereby maintaining virtual content accuracy while allowing device mobility.
2Measurement precision
If the system uses optical tracking to account for platform motion, then virtual content anchoring accuracy improves, but the system complexity increases
Solution Approach 1:
The patent introduces an intermediary coordinate system (platform reference frame) that mediates between the fixed world coordinate system and the device's local coordinate system. By transforming virtual content anchoring through this intermediate frame, the system achieves accurate tracking without requiring direct complex tracking between all reference points, thereby reducing overall system complexity.
Data Source
AI summary
Implementations of the subject technology provide extended reality display devices that can be used on and/or off of a moving platform. Systems and methods are disclosed for separating out the motion of the moving platform from other motions of the device so that virtual content can be displayed without erroneous motions caused by the motion of the moving platform. The subject technology can provide extended reality settings on any suitable moving platform such as in a car, a watercraft, an aircraft, a train, or any other vehicle.