Selective Reference Frame Decoding for VR Rendering Bottlenecks
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Solution Overview
Problem
Streaming virtual reality content is challenging due to the significant amount of visual information required to simulate a user's presence in a 3D environment, often leading to disruptions in rendering as the user changes position, as existing technologies struggle to manage the bandwidth and processing resources needed for real-time updates.
Innovation Solution
The technique involves selectively decoding frames, where reference frames for non-viewed portions of the virtual reality environment are decoded without decoding non-reference frames, and only decoding non-reference frames when they come into view, allowing for efficient data management and reduced disruptions in rendering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all frames (reference and non-reference) are decoded for non-viewed portions, then complete rendering capability is maintained, but data storage and processing requirements increase significantly
Solution Approach 1:
The patent applies local quality by differentiating the decoding treatment of reference frames versus non-reference frames for non-viewed portions. Reference frames are decoded to maintain spatial-temporal reference capability, while non-reference frames are not decoded to reduce processing load. This selective approach optimizes the balance between rendering capability and resource consumption.
2Reliability
If non-reference frames are pre-decoded for non-viewed portions, then rendering disruptions are reduced, but processing resources and time are consumed in advance
Solution Approach 1:
The patent applies preliminary action by pre-decoding only reference frames for non-viewed portions before the user actually views them. This allows the system to have reference data ready in advance without fully processing all frames, enabling faster transition when portions come into view while avoiding the overhead of pre-decoding every single frame.
3Reliability
If bandwidth is increased to stream all virtual reality content, then rendering quality is improved, but network infrastructure requirements and costs increase
Solution Approach 1:
The patent applies partial action by transmitting and decoding only the necessary subset of frames (reference frames for non-viewed portions and all frames for viewed portions) rather than all frames. This reduces bandwidth consumption while maintaining sufficient rendering quality through selective frame processing.
Data Source
AI summary
Techniques are described that enable virtual reality content to be delivered. These techniques include decoding reference frames of video content for non-viewed sections of the video content.