360-Degree Video Delivery With Field-of-View Block Prioritization
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Solution Overview
Problem
The delivery of high-resolution 360-degree video content poses challenges in balancing network bandwidth usage with content quality, as it requires greater bandwidth compared to standard video content.
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 partition the video frame into blocks for efficient 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 usage increases
Solution Approach 1:
The patent applies local quality by differentiating transmission resources across different spatial regions of the video frame. Areas within the user's field of view receive higher resolution and more transmission resources, while areas outside the field of view receive lower resolution or no transmission. This spatial differentiation of quality allows the system to maintain high content quality where needed while reducing overall bandwidth consumption.
Solution Approach 2:
The video frame is segmented into multiple blocks or regions based on the user's field of view and area of focus. The patent divides the video content into discrete transmittable units that can be selectively transmitted with different quality levels. This segmentation enables independent control of transmission resources for different portions of the video, resolving the contradiction between overall quality and bandwidth usage.
2Loss of information
If transmission resources are allocated to all areas of the video frame, then complete visual information is provided, but bandwidth efficiency decreases
Solution Approach 1:
The patent implements partial action by transmitting only the portions of the video frame that are relevant to the user's current view. Instead of transmitting complete visual information for the entire 360-degree video frame, the system transmits only the areas within the user's field of view at high quality, and optionally excludes or low-quality transmits areas outside the field of view. This partial transmission maintains sufficient visual information for the user's viewing experience while dramatically improving bandwidth efficiency.
3Manufacturing precision
If enhancement layers are transmitted for the entire video frame, then overall resolution is improved, but transmission complexity and bandwidth usage increase
Solution Approach 1:
The enhancement layer is applied locally only to specific blocks within the user's field of view rather than uniformly across the entire video frame. The patent identifies regions of interest within the field of view and applies enhancement layer data selectively to those blocks, providing higher resolution where the user is looking while avoiding the complexity and bandwidth overhead of enhancing the entire frame.
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.