Mesh encoding device, mesh decoding device, mesh encoding method and program

The mesh encoding device and method address low coding efficiency by dividing input meshes into subgroups and deriving displacement amounts, enabling inter-frame coding and enhancing efficiency.

JP7783841B2Active Publication Date: 2025-12-10KDDI CORP
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Patent Information

Application Number
JP2023014869
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-02-02
Publication Date
2025-12-10
Estimated Expiration
2043-02-02

AI Technical Summary

Technical Problem

Existing video-based dynamic coding (V-DMC) models face challenges in efficiently performing interframe coding on frames of non-tracking meshes, which has the problem of low coding efficiency, as only intra-frame coding can be performed on frames of non-tracking meshes, which has the problem of low coding efficiency.

Method used

A mesh encoding device and method that divides an input mesh sequence into subgroups, generates a tracking basic mesh sequence for each subgroup, and derives a displacement amount from the tracking basic mesh sequence, enabling inter-frame coding.

Benefits of technology

This approach allows for inter-frame coding, significantly improving coding efficiency by generating a tracking basic mesh from a non-tracking mesh.

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Abstract

To improve coding efficiency.SOLUTION: A mesh coding device 100 according to an invention comprises: a re-meshing part 101 which divides an input mesh sequence M into subgroups and generates a tracked basic mesh sequence TM for each subgroup; and a subdivision part 102 which derives a displacement magnitude D from the tracked basic mesh sequence TM and the mesh sequence M.SELECTED DRAWING: Figure 3
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Citation Information

Patent Citations

  • Projection-based mesh compression

    WO2021188238A1

  • Method and device for compressing data representative of a volumetric three-dimensional scene with a view to real-time decompression for online viewing

    WO2022129737A1