| Project/Area Number |
22650016
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
|---|
| Research Field |
Media informatics/Database
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| Research Institution | The University of Tokyo |
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Principal Investigator |
|
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| Co-Investigator(Renkei-kenkyūsha) |
AIZAWA Kiyoharu 東京大学, 大学院・情報学環, 教授 (20192453)
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| Project Period (FY) |
2010 – 2012
|
| Project Status |
Completed (Fiscal Year 2012)
|
| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,300,000)
|
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| Keywords | 3次元映像 / 圧縮 / パッチマッチング |
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| Research Abstract |
We have developed intra-frame and inter-frame coding algorithms for 3D mesh sequences generated bymultiple cameras, which we call Time-Varying Meshes (TVMs). For this purpose, mesh segmentationinto patches with patch alignment using principal component analysis (PCA) is proposed. The patchesare used as minimum units to eliminate spatial and temporal correlation of the TVMs. For intra-framecoding of geometry data, spectral compression using the Kirchhoff matrix was employed and that ofcolor texture was conducted using vector quantization (VQ). The inter-frame coding of geometry dataand color texture was achieved by the combination of patch-based matching and simple scalar quantization.Asaresult,theTVMdatawereefficientlycompressedto1/8and1/12byintra-frameand inter-framecoding,respectively.
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