Sony patents method for verifying 3D mesh video data integrity
Sony has filed a patent application describing a way to check the accuracy of 3D video data known as dynamic meshes. The system creates a digital fingerprint, or hash, of the decoded video stream to ensure the data has not been corrupted during transmission. This approach adapts existing standards for point cloud videos to work with newer mesh-based 3D formats.
In the filing’s own words
The Decoded Atlas Information Hash SEI in V3C is an SEI message that produces a hash for the decoded atlas bitstream. In its conception, it has application parts that apply currently to V-PCC bitstreams only. This disclosure describes a modification of the V-DMC specification to reuse the SEI message but create hash values according to decoded syntax elements from the VDMC bitstream. The new hash derivation process can also be used for conformance purposes, like what is done in V-PCC.
What exactly they claim (claim 1)
1. A method of extending the visual volumetric video-based coding (V3C) standard syntax for transmission of dynamic meshes, comprising: modifying existing decoded atlas hash supplemental enhancement information (SEI) to use syntax elements and variables defined in the V3C extension used by the video-based dynamic mesh coding (V-DMC) specification; creating new byte strings as extensions to the V3C syntax defining decoding process for dynamic meshes, based on variables and syntax elements defined by the extension mechanism of the V3C specification for the V-DMC specification, which are present in atlas frame parameter set (AFPS) VDMC extension, atlas sequence parameter set (ASPS) V-DMC extension, and also in newly defined mesh patches; and wherein the extensions of the V3C syntax enable efficient encoding of dynamic meshes, including modification of a V3C level SEI message to calculate a hash using new syntax elements from the V-DMC specification.
Facts
- Company
- Sony (SONY GROUP CORPORATION)
- Official title
- DECODED ATLAS HASH SEI FOR DYNAMIC MESH COMPRESSION STANDARD
- Publication number
- US20260303872A1
- Application number
- 19556209
- Filed
- Mar 4, 2026
- Published
- Oct 1, 2026
- Inventors
- 2
- Claims
- 15
Classified under
H04N 19/70 Electricity & electronicsH04N 19/597 Electricity & electronicsMore from Sony in AI & software
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.