Vertex position coding in lossless mesh compression

WO2024216086A9 Publication Date: 2025-03-27TENCENT AMERICA LLC
0 Cites 0 Cited by

Patent Information

Application Number
PCT/US2024/024346
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-04-11
Filing Date
2024-04-12
Publication Date
2025-03-27

AI Technical Summary

Technical Problem

Current mesh compression standards, such as IC, MESHGRID, and FAMC, fail to effectively handle dynamic meshes with time-varying connectivity information and attribute maps, particularly in real-time applications like AR and VR, where efficient lossless compression is necessary for volumetric data.

Method used

The proposed method involves partitioning mesh vertices into groups representing parallelograms, applying parallelogram prediction by splitting them into triangles, and using prediction candidates to decode vertex positions, with options for zero, one, or multiple candidates, and signaling an upper limit of prediction candidates in the bitstream.

Benefits of technology

This approach enables efficient lossless compression of dynamic meshes, reducing data volume while maintaining high-quality reconstruction, especially in real-time applications like AR and VR, by effectively predicting and encoding vertex positions.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

A method and apparatus comprising computer code configured to cause a processor or processors to obtain, from a bitstream, a mesh representing an encoded volumetric data of at least one three-dimensional (3D) visual content, partition a plurality of vertices of the mesh into a plurality of groups,, at least one of the groups representing a shape of a parallelogram, and decode the encoded volumetric data by predicting the vertices in each group of the plurality of groups based on a prediction mode associated with the each group.
Need to check novelty before this filing date? Find Prior Art