360 Degree VR Broadcasting Server Stream Segmentation
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Solution Overview
Problem
There is a lack of methods for providing a 360 degree virtual reality broadcasting service that offers spatial, temporal, and 3D scalabilities through a hybrid network while maintaining existing ultra high definition (UHD) broadcasting services.
Innovation Solution
The method involves transmitting a 360 degree full image stream and a view of interest (Vol) region stream through a hybrid network, using a 3D VR camera to acquire source inputs, and segmenting the streams for spatial, temporal, and 3D scalability, with the broadcasting server selecting appropriate source inputs based on user selection and movement information to optimize resolution and frame rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a 360 degree VR broadcasting service is provided through a hybrid network, then spatial, temporal, and 3D scalabilities are achieved, but device complexity and service provision difficulty increase
Solution Approach 1:
The patent segments the 360 degree full image stream into multiple view regions (VOI - View of Interest, VOS - View of Surroundings) and transmits them separately through different networks. The broadcast network carries the full resolution stream while the Internet network carries selected region streams, enabling scalable service delivery without requiring complete system redesign.
Solution Approach 2:
The transmitting apparatus is designed to provide multiple broadcasting services (UHD, 360 degree VR, 3D VR) through a single hybrid network infrastructure. The system can selectively transmit different stream types based on user selection mode and movement information, making the infrastructure universally applicable to various service requirements.
2Measurement precision
If full resolution 360 degree image streams are transmitted, then image quality is improved, but data transmission volume and network bandwidth requirements increase
Solution Approach 1:
The patent extracts specific regions of interest from the full 360 degree image stream and transmits them separately. Instead of transmitting the entire high-resolution stream to all devices, only the relevant VOI and VOS regions are extracted and transmitted through the Internet network based on user selection mode, significantly reducing data volume while maintaining quality where needed.
Solution Approach 2:
Different regions of the image stream are transmitted at different qualities and resolutions. The VOI region receives full resolution transmission while surrounding regions may be transmitted at lower resolutions, optimizing bandwidth usage by applying quality differentiation based on spatial location and user interest.
3Measurement precision
If high resolution image streams are transmitted through both broadcast and Internet networks, then service quality is improved, but network bandwidth consumption and transmission time increase
Solution Approach 1:
The system performs preliminary segmentation of the image stream into base layer (full stream) and enhancement layer (selected regions) before transmission. The broadcast network delivers the base layer in advance, while the Internet network supplements with enhancement layers, allowing receivers to progressively improve quality without waiting for complete high-resolution data.
Solution Approach 2:
The patent merges two network infrastructures (broadcast network and Internet network) to deliver different components of the same service. The broadcast network provides reliable baseline delivery while the Internet network provides flexible supplementation, combining their advantages to reduce overall transmission time and improve service quality simultaneously.
4Adaptability or versatility
If existing UHD broadcasting service is maintained while adding 360 degree VR service, then service compatibility is improved, but system complexity and service provision difficulty increase
Solution Approach 1:
The transmitting apparatus dynamically selects which streams to transmit based on user selection mode and movement information. The system can switch between providing only UHD service, only 360 degree VR service, or both simultaneously, adapting its operation mode to current requirements without requiring separate fixed infrastructure for each service type.
Data Source
AI summary
An apparatus for providing a 360 degree virtual reality broadcasting service uses an image acquired through a 3D virtual reality (VR) camera to transmit a 360 degree full image stream having first resolution and transmits an image stream of a view of interest (Vol) region having second resolution different from the first resolution according to a user selection mode and move information if the user selection mode and the movement information are received from a receiving apparatus.