360 Video Frame Partitioning for Field-of-View Bandwidth Control
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Solution Overview
Problem
Delivering high-resolution 360-degree video content efficiently poses challenges in balancing network bandwidth usage with content quality, as transmitting larger frame sizes requires more bandwidth than smaller frames.
Innovation Solution
Prioritize transmission resources by focusing on areas of interest within the user's field of view, using separate data streams for the main video frame and an enhancement layer to enhance the area of focus, and spatially partitioning the video frame into blocks for efficient encoding and delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If video content with larger frame size and higher resolution is delivered, then content quality is improved, but network bandwidth consumption increases
Solution Approach 1:
The patent applies local quality by differentiating video transmission quality across different spatial regions. The video frame is divided into multiple regions, and each region is assigned a different quality level based on its importance to the user's field of view. Regions within the user's field of view receive higher quality encoding with more bits, while regions outside the field of view receive lower quality encoding with fewer bits. This resolves the contradiction by maintaining high content quality where needed while reducing overall bandwidth consumption.
Solution Approach 2:
The patent segments the video frame into multiple regions based on their relevance to the user's field of view. By dividing the video content into distinct segments (regions inside and outside the field of view), the system can apply different transmission strategies to each segment. This segmentation allows the system to prioritize bandwidth allocation to important regions while reducing transmission of less important regions, thereby improving content quality in critical areas without proportionally increasing total bandwidth usage.
2Reliability
If transmission resources are allocated to areas outside user's field of view, then complete video coverage is maintained, but bandwidth efficiency decreases
Solution Approach 1:
The patent extracts and separates the transmission of video regions based on their importance. Regions outside the user's field of view are identified and separated from the critical regions within the field of view. The extraction principle is applied by creating distinct data streams or encoding paths for different regions, allowing the system to minimize or selectively transmit less important regions while ensuring complete coverage is maintained when needed, thereby improving bandwidth efficiency.
Data Source
AI summary
The disclosure relates to a method of delivering a video frame. One implementation may involve spatially partitioning a video frame into a plurality of blocks, encoding at least one of the plurality of blocks of the video frame, and transmitting the at least one of the plurality of blocks of the video frame.