VR Motion Control via Real-World Position Tracking
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Solution Overview
Problem
Existing virtual reality (VR) technologies struggle to provide intuitive and seamless motion control, often leading to virtual reality sickness due to mismatches between simulated and real-world motion.
Innovation Solution
A VR control method that displays a VR environment from a perspective defined within a reference frame, with a graphical indicator showing the real-world position of the VR device relative to a reference position, allowing for velocity determination and translation of the reference frame based on real-world displacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional VR motion control methods are used, then device complexity is reduced, but virtual reality sickness occurs due to mismatch between simulated and real-world motion
Solution Approach 1:
The system continuously tracks the user's real-world position and orientation using sensors (accelerometers, gyroscopes, magnetometers) and provides visual feedback through a graphical indicator displayed in the VR environment. This feedback loop allows the system to adjust the reference frame velocity based on actual user movement, reducing the mismatch between simulated and perceived motion that causes VR sickness
Solution Approach 2:
The patent introduces a reference frame as an intermediary between the user's physical movement and the VR environment. The reference frame velocity is determined by processing sensor data about user displacement, and this reference frame then controls the perspective movement in VR. This intermediary layer smooths the translation between real-world and virtual motion, reducing disorientation and sickness
2Loss of information
If visual feedback of real-world position is provided, then user awareness of movement is improved, but information processing requirements increase
Solution Approach 1:
The system creates a simplified visual copy of the user's real-world position relative to a reference point using a graphical indicator in the VR environment. This indicator provides essential spatial awareness information without requiring complex data processing, as it only needs to display relative position and velocity direction rather than full sensor data processing
Data Source
AI summary
A virtual reality (VR) control method includes displaying, by a VR device, a VR environment. The VR environment is presented from a perspective in the VR environment that is defined with respect to a reference frame in the VR environment. A graphical indicator of a current real-world position of the VR device with respect to a real-world reference position is displayed. The graphical indicator tracks the perspective during movement of the perspective to remain displayed during the movement of the perspective. The method includes determining a velocity of the reference frame based on a displacement between the current real-world position and the real-world reference position; and translating the reference frame in the VR environment at the velocity.