3D Video Tile Rendering for VR Bandwidth Reduction
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Solution Overview
Problem
Current three-dimensional video processing methods for virtual reality applications are inefficient in rendering volumetric content, as they often require processing and transmitting unnecessary data, leading to increased computational resources and bandwidth usage.
Innovation Solution
The method involves receiving video data arranged as tiles with depth range metadata, determining the volume of each tile, and rendering only tiles within the user's field of view, with additional tiles being used to fill in invalid pixel data, allowing for efficient data processing and reduced bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all three-dimensional video content is rendered to provide complete volumetric VR experience, then the immersive experience is enhanced, but computational resources and bandwidth usage increase significantly
Solution Approach 1:
The three-dimensional video content is divided into multiple tiles, each representing a specific region of the volumetric space. This segmentation allows the system to process and transmit only the necessary tiles based on the user's field of view, significantly reducing computational resources and bandwidth requirements while maintaining immersive experience quality.
Solution Approach 2:
Different tiles are processed and transmitted with different levels of detail based on their relevance to the user's current view. Tiles within the user's field of view are rendered with full quality, while tiles outside the field of view are either not transmitted or transmitted at lower quality, optimizing the balance between experience quality and resource consumption.
2Adaptability or versatility
If all three-dimensional video content is transmitted to ensure complete coverage, then the volumetric content is available, but bandwidth usage increases
Solution Approach 1:
The volumetric video content is segmented into discrete tiles that can be independently transmitted and processed. This segmentation enables the system to transmit only the necessary tiles based on the user's field of view and interaction history, dramatically reducing bandwidth requirements while maintaining complete volumetric content coverage when needed.
Solution Approach 2:
The system transmits only the partial set of tiles that are currently needed based on the user's field of view, rather than transmitting the complete set of all possible tiles. This partial action approach reduces bandwidth usage while providing sufficient content coverage for the user's current experience.
3Manufacturing precision
If all video data is processed to ensure complete rendering, then the visual quality is maintained, but processing time and computational efficiency deteriorate
Solution Approach 1:
The video data is segmented into tiles that can be processed independently. This segmentation allows the rendering system to process only the necessary tiles based on the user's field of view, maintaining visual quality for visible content while significantly improving processing efficiency by avoiding unnecessary computation on invisible tiles.
Solution Approach 2:
Different tiles are processed with different levels of computational detail based on their visibility and importance. Tiles within the user's field of view receive full processing for high visual quality, while tiles outside the field of view are processed minimally or not at all, optimizing the balance between visual quality and processing efficiency.
Data Source
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AI summary
A method and system for three-dimensional video content processing is disclosed comprising an operation of receiving first video data representing three-dimensional video content arranged as a plurality of first tiles associated with respective sub-areas of an image. Another operation comprises providing data indicating for each first tile a depth range of video content within said tile. Another operation comprises determining for each first tile a respective volume based on the depth range. Another operation comprises determining a field of view of a user in relation to the first tile volumes. Another operation comprises rendering of the first video data for one or more first tiles only if their determined volume is at least partially within the field of view.