3D Model Copy Verification Using Virtual Viewpoint Parameters
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Solution Overview
Problem
Existing technologies allow free duplication of three-dimensional shape data used in generating virtual viewpoint images, which is undesirable for business operators providing virtual viewpoint content.
Innovation Solution
An information processing system that generates virtual viewpoint images from three-dimensional models, determines conditions related to time and virtual viewpoint parameters, and records information on models only when specific conditions are met, reducing the amount of recorded data and facilitating verification of copied models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If information on all three-dimensional models is recorded to enable verification of copied models, then verification capability is improved, but data storage volume increases
Solution Approach 1:
The patent extracts only the essential verification elements (time information and virtual viewpoint parameter information) from the complete three-dimensional model data. This selective extraction enables verification capability while minimizing data storage requirements, as only critical identification parameters are recorded rather than full model information.
Solution Approach 2:
The verification system is segmented into two parts: full three-dimensional models stored in the storage unit for comprehensive verification, and extracted verification information (time and viewpoint parameters) stored in the information recording unit for quick reference. This segmentation allows efficient verification without storing redundant complete model data.
2Measurement precision
If all virtual viewpoint images are generated and stored for verification purposes, then verification accuracy is improved, but processing load increases
Solution Approach 1:
The system performs preliminary recording of verification-critical information (time and virtual viewpoint parameters) at the time of model generation, rather than performing complete model reconstruction during verification. This preliminary action reduces processing load during verification while maintaining accuracy through proper parameter recording.
3Reliability
If complete three-dimensional model data is recorded for every virtual viewpoint image, then verification reliability is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the necessary verification parameters (time information and virtual viewpoint parameter information) from complete three-dimensional model data. This extraction approach maintains verification reliability by preserving critical identification information while reducing system complexity by avoiding storage and processing of redundant complete model data.
Data Source
AI summary
An information processing system is provided. The system obtains three-dimensional models of one or more objects at a designated time from a storage that stores three-dimensional models indicating three-dimensional shapes of objects at respective times. The system, using the three-dimensional models of the one or more objects at the designated time, generates a virtual viewpoint image corresponding to the designated time from a virtual viewpoint based on a designated virtual viewpoint parameter. The system outputs the generated virtual viewpoint image. The system determines whether a predetermined condition is satisfied, the predetermined condition being a condition related to at least one of the time and the virtual viewpoint parameter. The system, in response to satisfaction of the predetermined condition, records information on the three-dimensional models of the objects corresponding to the generated virtual viewpoint image.