Dynamic Mesh Base Coding for Sub-Mesh Efficiency Loss
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Solution Overview
Problem
The reduction in the number of faces per coding unit due to sub-mesh division leads to a decrease in coding efficiency in existing video-based dynamic mesh coding systems that rely on referencing adjacent faces.
Innovation Solution
A coding system is introduced that allows for selecting between two systems: one that converts vertex and connection information into secondary information indicating the relationship between adjacent faces, and another that codes these without conversion, thereby maintaining coding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the mesh is divided into sub-meshes, then the coding method can be more suitable for the shape features, but the number of faces per coding unit is reduced which decreases coding efficiency
Solution Approach 1:
The mesh is divided into multiple sub-meshes (patches), allowing different coding methods to be applied to different regions based on their shape characteristics. This segmentation enables adaptive coding while maintaining sufficient faces within each sub-mesh for efficient reference-based compression.
Solution Approach 2:
Different coding methods are applied to different sub-meshes based on their local shape features. Sub-meshes with simple geometry use reference-based coding, while those with complex features use alternative methods, optimizing overall coding efficiency while adapting to local characteristics.
2Productivity
If vertex information and connection information are converted into secondary information indicating relationships between adjacent faces, then coding efficiency improves through reference usage, but when sub-mesh division reduces the number of faces per coding unit, the reference effect is reduced
Solution Approach 1:
The patent dynamically adjusts the coding strategy based on the number of faces available in each coding unit. When sub-mesh division results in fewer faces per unit, the system adapts by selecting coding methods that do not rely heavily on adjacent face references, thereby maintaining coding efficiency despite the reduced reference effect.
Solution Approach 2:
The patent changes the coding parameters and methods based on the characteristics of each sub-mesh. When the number of faces per coding unit is reduced, it switches from reference-based coding to alternative coding approaches, optimizing the balance between compression efficiency and the limitations imposed by sub-mesh division.
Data Source
AI summary
The present disclosure relates to an information processing device and method to make it possible to reduce a decrease in coding efficiency.A first system or a second system is selected as a coding system of a base mesh to be intra-coded, and when the first system is selected as the coding system, vertex information and connection information of the base mesh are coded by being converted into secondary information indicating the relationship between adjacent faces of the base mesh, and when the second system is selected as the coding system, the vertex information and the connection information are coded without being converted into the secondary information. The present disclosure may be applied to, for example, an information processing device, an electronic device, an information processing method, a program, or the like.