Wide-Angle VR Video Display With Relative Movement Guidance
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Solution Overview
Problem
Existing video display systems, such as head-mounted displays, suffer from user discomfort due to sensory incongruency between virtual and real spaces, leading to VR sickness, particularly when wide-angle videos are viewed with unintended movements.
Innovation Solution
A video display system that includes a capturing unit for wide-angle video, a data obtainment unit for movement direction, a metadata composition unit, a transmission unit, a VR device with a reception unit, an orientation estimation unit, a differential calculation unit, and a presentation unit to calculate and present the relative movement direction, ensuring appropriate video display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wide-angle video is displayed with capturing unit movement, then the field of view and immersion are improved, but sensory incongruency between virtual and real spaces increases causing VR sickness
Solution Approach 1:
The system continuously tracks the user's head orientation using sensors (gyroscopes, accelerometers) and uses this feedback to dynamically adjust the video rendering. The orientation estimation unit processes sensor data to determine user orientation, which then feeds back to the video generation unit to update the displayed field of view in real-time, ensuring the virtual view matches the user's actual head position and preventing sensory mismatch.
Solution Approach 2:
The system transitions from a static video display to a dynamic one where the field of view continuously adapts to user movement. The capturing unit's movement direction data is processed to calculate relative movement direction, and the video generation unit dynamically renders different portions of the wide-angle video based on the user's current orientation, creating a responsive and adaptive viewing experience that moves with the user.
2Loss of information
If the system calculates and presents relative movement direction, then user orientation awareness is improved, but computational complexity increases
Solution Approach 1:
The system pre-calculates and stores the capturing unit's movement direction data in metadata during video recording. This preliminary action allows the VR device to later retrieve and process only the necessary orientation information without needing to re-analyze the entire video stream, reducing real-time computational complexity while maintaining orientation awareness.
Solution Approach 2:
The system extracts only the essential movement direction information from the captured video data and stores it as separate metadata. This extraction allows the differential calculation unit to work with compact, pre-processed data rather than analyzing full video frames, significantly reducing computational complexity while preserving the information needed for orientation awareness.
Data Source
AI summary
A video display system includes: an observation device, a data obtainment unit that obtains data related to a movement direction of the capturing unit, and a metadata composition unit that obtains metadata based on the obtained data; and a VR device including: a reception unit that receives the metadata; an orientation estimation unit that estimates an orientation of the display device; a differential calculation unit that calculates a relative movement direction of the capturing unit based on a difference between the orientation of the display device and the movement direction of the capturing unit in the metadata; a presentation unit that presents the calculated relative movement direction to a user of a display device; a video generation unit that generates a display video; and a VR device including a display device that displays the display video.