Volumetric Video Distribution With Precomputed Viewpoint Data
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Solution Overview
Problem
Existing methods for distributing volumetric video require large server loads, high communication bandwidths, and can degrade user experience due to bandwidth limitations and server resource division, leading to quality issues.
Innovation Solution
A distribution system that arranges multiple virtual viewpoints around an object, creates reduced-data one-sided stereoscopic data for each viewpoint, and distributes this data based on user position and field of view, using a distribution control server and content server to manage data distribution efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If rendering is performed on the server side for each user based on head movement, then video quality is maintained, but server load increases significantly
Solution Approach 1:
The patent divides the volumetric video data into multiple one-sided stereoscopic data sets, each corresponding to a specific virtual viewpoint. Instead of rendering complete 360-degree videos for each user, the system segments the content and serves only the relevant portion based on user position and field of view, thereby reducing server processing load while maintaining quality.
Solution Approach 2:
The system pre-generates one-sided stereoscopic data for multiple virtual viewpoints around the object in advance. This preliminary action allows the server to store pre-processed data that can be quickly distributed to clients without requiring real-time rendering, thus reducing server load during actual video delivery.
2Manufacturing precision
If high communication bandwidth is provided for volumetric video distribution, then video quality is maintained, but network load increases and affects other users
Solution Approach 1:
The patent extracts and removes unnecessary data portions from the volumetric video. By providing only one-sided stereoscopic data corresponding to the user's actual field of view rather than complete 360-degree data, the system significantly reduces the amount of data transmitted over the network while maintaining the quality of the visible portion.
Solution Approach 2:
The system applies different data quality and completeness levels to different spatial regions. The front portion of the object (within user field of view) is provided with high-quality one-sided stereoscopic data, while portions outside the field of view are omitted or reduced, optimizing network bandwidth usage according to actual viewing requirements.
3Manufacturing precision
If complete volumetric video data is transmitted to maintain image quality, then user experience is maintained, but data amount increases significantly
Solution Approach 1:
The patent applies partial action by transmitting only the necessary portion of volumetric video data required for the user's current viewing condition. Instead of sending complete multi-viewpoint or 360-degree data, the system transmits only the specific one-sided stereoscopic data corresponding to the user's position and field of view, reducing data amount while maintaining perceived quality.
Data Source
AI summary
A distribution system according to one embodiment includes: an arrangement unit that arranges a plurality of virtual viewpoints around an object represented by stereoscopic data constituting stereoscopic video content; a first creation unit that creates, for each of the virtual viewpoints, one side stereoscopic data in which an amount of data of a portion of the object that cannot be visually recognized from the virtual viewpoint is reduced; and a distribution unit that distributes one side stereoscopic data of one virtual viewpoint among the one side stereoscopic data for each of the virtual viewpoints to a terminal of a user according to a position and a field of view of the user in a virtual space in which the object is arranged.