Mesh Decoding Device Using Video Encoding for Efficiency
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Solution Overview
Problem
Existing mesh encoding technologies struggle with reducing information amount even when loss is allowed, leading to low encoding efficiency.
Innovation Solution
A mesh decoding device and method that decodes a displacement bit stream to generate and output a displacement, involving video decoding, level value development, inverse quantization, and inverse wavelet transform to improve encoding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If lossless encoding is used for all vertex coordinates and connection information, then encoding accuracy is maintained, but the amount of information cannot be reduced and encoding efficiency is low
Solution Approach 1:
The patent applies video encoding parameters (quantization, wavelet transform) to mesh displacement data, transforming the encoding approach from lossless to controlled-loss compression while maintaining acceptable reconstruction quality
Solution Approach 2:
The patent accepts controlled information loss in exchange for significantly reduced bitstream size, treating the mesh displacement data as compressible information rather than requiring perfect preservation
2Loss of information
If lossless encoding is applied to dynamic mesh data, then complete information is preserved, but the information amount is excessive and encoding efficiency deteriorates
Solution Approach 1:
The patent transforms mesh displacement encoding by applying video coding parameters including quantization levels and wavelet transform, enabling controlled information loss to achieve compact representation
Solution Approach 2:
The patent introduces video encoding techniques as an intermediary method to bridge mesh data compression needs, using established video coding pipelines to achieve efficient compression
Data Source
AI summary
A mesh decoding device includes: a circuit that decodes a displacement bit stream to generate and output a displacement, wherein the circuit: outputs a video by decoding the displacement bit stream by video encoding, develops and outputs the video as a level value for each image, generates a transformed coefficient by inversely quantizing the level values, and generates the displacement by applying an inverse wavelet transform to the transformed coefficient.