Mesh decoding device, mesh decoding method, and program
The mesh decoding device optimizes motion vector calculation and storage to enhance coding efficiency, addressing the low efficiency in conventional technologies.
WO2025074662A1 Publication Date: 2025-04-10KDDI CORP
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Patent Information
- Application Number
- PCT/JP2024/008393
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-10-05
- Filing Date
- 2024-03-05
- Publication Date
- 2025-04-10
AI Technical Summary
Technical Problem
The conventional technology has a low coding efficiency for motion vectors in mesh encoding.
Method used
A mesh decoding device and method that includes a motion vector residual decoding unit, a motion vector prediction unit, an overlapping vertex search unit, and a flag acquisition unit to enhance coding efficiency by optimizing the calculation and storage of motion vectors.
Benefits of technology
Improves the coding efficiency of mesh decoding by efficiently calculating and storing motion vectors, reducing the amount of code required and memory usage.
✦ Generated by Eureka AI based on patent content.
Abstract
In a mesh decoding device 200 according to the present invention: a motion vector calculation unit 202E4 makes the modes of motion vectors of N (N≥1) vertices that are continuous in decoding order the same; said N vertices constitute one group; the motion vector calculation unit 202E4 decodes, from a bitstream, a control signal capable of calculating a group size indicating the size of the group; and a flag acquisition unit 202E7 decodes a second flag for each of the vertices from a bitstream of a P frame when a first flag indicates Yes, sets a prediction mode of a vertex to be decoded to 2 when the second flag indicates Yes, and sets the prediction mode of the vertex to be decoded to other than 2 when the second flag indicates No.
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