Patch-based compression for Time-Varying Meshes
This paper proposes intra-frame and inter-frame coding algorithms for 3D mesh sequences generated by multiple cameras, which we call Time-Varying Meshes (TVMs). For this purpose, mesh segmentation into patches with patch alignment using principal component analysis (PCA) is proposed. The patches are used as minimum units to eliminate spatial and temporal correlation of the TVMs. For intraframe coding of geometry data, spectral compression using the Kirchhoff matrix was employed and that of color texture was conducted using vector quantization (VQ). The inter-frame coding of geometry data and color texture was achieved by the combination of patch-based matching and simple scalar quantization. The intra- and inter-frame coding are compared to the previous works and demonstrated promising results.