6DoF Video Playback Using Line-of-Sight View Stream Selection
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Solution Overview
Problem
Existing video technologies limit viewing to a single pre-configured viewpoint, lacking the ability to freely switch viewpoints, thereby reducing immersion and freedom in video experiences.
Innovation Solution
A method and electronic device for playing six-degree-of-freedom video, enabling viewpoint position adjustment through interaction, utilizing a virtual screen in a three-dimensional space to play video content based on a target viewing angle stream, determined by a line-of-sight direction and object positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If three-degree-of-freedom video technology is used, then the video can be viewed through a pre-configured viewpoint position, but the video contents at different viewpoint positions cannot be viewed by freely switching the viewpoint positions
Solution Approach 1:
The video content is segmented into multiple view angle streams, each corresponding to a specific viewpoint position. The system divides the three-dimensional space into multiple regions, with each region associated with a particular view angle stream, enabling free viewpoint switching while managing complexity through spatial segmentation
Solution Approach 2:
The patent transitions from traditional two-dimensional video playback to three-dimensional space-based video playback. By introducing a third dimension (depth/viewpoint position), the system enables free viewpoint switching and allows users to navigate and view video content from multiple angles within a virtual three-dimensional environment
2Adaptability or versatility
If six-degree-of-freedom video playback is implemented in virtual three-dimensional space, then immersion and viewing freedom are improved, but the system complexity increases
Solution Approach 1:
The system uses a unified virtual three-dimensional space model that can handle multiple view angle streams and different interaction modes through a single framework. The same spatial segmentation and line-of-sight calculation mechanisms serve both free viewpoint switching and immersive six-degree-of-freedom playback, reducing overall system complexity
Solution Approach 2:
The patent creates a virtual copy of the three-dimensional playback environment within the electronic device. Instead of requiring complex physical hardware for six-degree-of-freedom playback, the system generates a virtual three-dimensional space that replicates the desired viewing experience through software-based rendering and line-of-sight calculations
Data Source
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AI summary
A method and an electronic device for playing a six-degree-of-freedom video relate to the technical field of immersive video. The method includes: obtaining a first position and a second position, the first position being a position of a target object in a six-degree-of-freedom video at a moment in a virtual three-dimensional space, the second position being a viewpoint position of a user at the same moment in the virtual three-dimensional space; obtaining a line-of-sight direction according to the first position and the second position; obtaining a target viewing angle stream corresponding to the line-of-sight direction among a plurality of viewing angle streams of the six-degree-of-freedom video; and playing the six-degree-of-freedom video in the virtual three-dimensional space based on the target viewing angle stream.