3D Tile Decoding Using Atlas-Attribute Similarity Flags
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Solution Overview
Problem
Existing 3D data encoding schemes fail to efficiently encode and decode 3D data without redundancy, which leads to inefficient encoding and decoding of 3D data encoding and decoding 4D data encoding and decoding 3D data encoding and decoding and decoding 3D data encoding and transmitting and transmitting and transmitting and recording 3D data.
Innovation Solution
A 3D data encoding apparatus and decoding apparatus that utilize a tile information decoder and extension information decoder to encode and decode 3D data, respectively, by indicating similarities and differences between atlas and attribute tile information to reduce redundancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If atlas tile information and attribute tile information are encoded separately, then flexibility in tile definition is maintained, but redundancy increases and encoding efficiency decreases
Solution Approach 1:
The patent merges the encoding of atlas tile information and attribute tile information by introducing a flag that indicates whether attribute tile information is present. When the flag is set to false, the attribute tile information is derived from atlas tile information, combining both encoding processes into a single efficient operation while maintaining the flexibility to define different tile configurations when needed
2Reliability
If attribute tile information is always encoded, then completeness of data is ensured, but redundancy increases and encoding efficiency decreases
Solution Approach 1:
The patent applies local quality by conditionally encoding attribute tile information based on the flag value. When the flag is true, complete attribute tile information is encoded; when false, the system derives attribute tile information from atlas tile information. This selective approach ensures data completeness where needed while reducing redundancy and improving encoding efficiency where attribute information is identical to atlas information
Data Source
AI summary
The object is to encode and decode 3D data not having redundancy with high efficiency with maintained flexibility in definition of a tile by indicating similarities/differences between atlas tile information and attribute tile information.SolutionA 3D data decoding apparatus for decoding mesh data or point cloud data includes a tile information decoder configured to decode atlas tile information from encoded data in which the mesh data or the point cloud data is encoded, and an extension information decoder configured to decode extension control parameter information from the encoded data. The extension control parameter information includes attribute tile information. At the extension information decoder, a flag indicating a similarity/difference between the (atlas) tile information and the attribute tile information is decoded from the encoded data, and derives the attribute tile information.