Virtual Viewpoint Image Data Transmission via Selective Quality
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Solution Overview
Problem
Existing methods for generating virtual viewpoint images face challenges in reducing the large data amount required for transmission, leading to bandwidth pressure and potential omission of necessary information, as seen in Japanese Patent No. 5563545, which focuses solely on configuration density of shapes.
Innovation Solution
A system that selectively provides three-dimensional geometric data of varying quality to user terminals based on data requests, utilizing multiple classes of model data with different qualities to efficiently manage data transmission, including background and object geometric data, texture data, and animation data, ensuring optimal image quality and reduced bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If model data with high configuration density is transmitted to ensure complete object information, then the reliability of virtual viewpoint image generation is improved, but the data transmission bandwidth requirement increases
Solution Approach 1:
The patent applies local quality by transmitting model data with different configuration densities for different objects based on their individual characteristics. Important objects (e.g., players, balls) are transmitted with high configuration density to ensure complete information, while less important objects (e.g., background elements, spectators) are transmitted with low configuration density. This selective approach maintains reliability for critical objects while reducing overall data bandwidth requirements.
2Quantity of substance
If model data with low configuration density is transmitted to reduce data amount, then the data transmission bandwidth requirement is reduced, but the reliability of virtual viewpoint image generation deteriorates
Solution Approach 1:
The patent changes the configuration density parameter of model data based on object importance. By adjusting this parameter dynamically, the system transmits high-resolution model data for important objects and low-resolution model data for less important objects. This parameter change enables the system to optimize the balance between data transmission bandwidth and information completeness, preventing reliability deterioration while reducing overall data amount.
3Manufacturing precision
If all objects are transmitted with high model data quality to ensure image generation accuracy, then the manufacturing precision of virtual viewpoint images is improved, but the data transmission bandwidth requirement increases
Solution Approach 1:
The patent applies local quality by transmitting model data with different configuration densities for different objects based on their individual characteristics. Important objects (e.g., players, balls) are transmitted with high configuration density to ensure complete information, while less important objects (e.g., background elements, spectators) are transmitted with low configuration density. This selective approach maintains reliability for critical objects while reducing overall data bandwidth requirements.
Data Source
AI summary
A providing apparatus configured to provide three-dimensional geometric data to be used to generate a virtual viewpoint image receives a data request from a communication apparatus, decides which of a plurality of pieces of three-dimensional geometric data including first three-dimensional geometric data and second three-dimensional geometric data with a different quality than the first three-dimensional geometric data is to be provided to the communication apparatus from which the received data request was transmitted, and provides the three-dimensional geometric data decided on from among the plurality of pieces of three-dimensional geometric data, to the communication apparatus as a response to the received data request.