Dynamic Mesh Geometry Coding Without 2D Mapping Delay
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Solution Overview
Problem
The process of mapping 3D displacement coefficients to a 2D surface and further video coding in three-dimensional computer graphics and solid modeling imposes a coding delay and requires additional memory storage.
Innovation Solution
Implementing zero-run length coding combined with entropy coding, transform, and quantization to decode and encode displacement components, eliminating the need for image/video decoding and reducing memory storage requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If 3D displacement coefficients are mapped to a 2D surface and further video coded, then the geometry information can be compressed and transmitted, but this process imposes a coding delay and requires additional memory storage
Solution Approach 1:
The patent extracts the geometry coding process from the video coding pipeline by directly encoding displacement coefficients using entropy coding without mapping to 2D surface format, eliminating the intermediate steps that cause coding delay and reduce memory requirements
Solution Approach 2:
Instead of the conventional approach of mapping 3D coefficients to 2D surface and then video coding, the patent inverts the process by directly applying entropy coding to the 3D displacement coefficients, reversing the traditional coding sequence to achieve better efficiency
2Productivity
If 3D displacement coefficients are mapped to a 2D surface and further video coded, then the geometry information can be compressed and transmitted, but this process imposes a coding delay
Solution Approach 1:
The patent extracts the geometry coding process from the video coding pipeline by directly encoding displacement coefficients using entropy coding without mapping to 2D surface format, eliminating the intermediate steps that cause coding delay
Solution Approach 2:
The patent skips the intermediate mapping step to 2D surface format by directly applying entropy coding to 3D displacement coefficients, rushing through the coding process to minimize delay while maintaining compression efficiency
Data Source
AI summary
Computer-implemented methods and systems for processing geometry replacements are disclosed. The methods include decoding/encoding a syntax element associated with a coding mode from/into a bitstream associated with geometry displacements; and reconstructing/converting, based on a coefficient configuration associated with the coding mode, a plurality of quantized transform coefficients from/to a plurality of zero-run length codes.