Apple patents method to compress moving 3D shapes for video
Apple describes a way to compress video data for moving 3D objects, known as mesh coding. The system tracks how parts of a 3D shape move over time to reduce the amount of data needed to store or send the video.
In the filing’s own words
A system comprises an encoder configured to compress and encode data for a three-dimensional mesh. To compress the three-dimensional mesh, the encoder determines displacements to be applied to sub-division locations of a base mesh. In addition to signaling displacements, motion vectors for portions of the base mesh (e.g. sub-meshes) may be signaled. In this way, similarities in base mesh structure across multiple moments in time (or within a moment in time frame) may be exploited to further improve compression efficiency.
What exactly they claim (claim 1)
1. One or more non-transitory computer-readable storage media storing program instructions that, when executed using one or more processors, cause the one or more processors to: receive a bit stream for a dynamic mesh, the bit stream comprising: a base mesh sub-bitstream comprising information for a base mesh, wherein the base mesh sub-bitstream is signaled using a plurality of sub-mesh data units corresponding to a plurality of respective sub-meshes included in the base mesh; and one or more additional sub-bitstreams comprising displacement information for displacements that are to be applied to sub-division locations of the base mesh, parse the base mesh sub-bitstream to determine, based on information signaled in respective ones of the sub-mesh data units: vertices counts for the respective sub-meshes; reconstruct at least a portion of the plurality of sub-meshes signaled in the base mesh sub-bitstream using the vertices counts parsed from the base mesh sub-bitstream; and apply at least a portion of the displacement information to sub-division locations of the reconstructed portion of the sub-meshes.
Facts
- Company
- Apple (Apple Inc.)
- Official title
- Signaling Base-Mesh Motion Vectors for Video-Based Mesh Coding
- Publication number
- US20260292236A1
- Application number
- 19474169
- Filed
- Apr 12, 2024
- Published
- Sep 24, 2026
- Inventors
- 1
- Claims
- 20
Classified under
H04N 19/52 Electricity & electronicsG06T 9/001 Physics & computingMore from Apple 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.