Dynamic Mesh Coding With Temporally Consistent UV Atlas Generation

The MPEG-3DGH group is developing a new standard for dynamic mesh encoding, known as Video-based Dynamic Mesh Coding (V-DMC). While V-DMC leverages a base mesh framework to exploit temporal correlations in the geometry, it does not account for extracting temporal information during UV atlas generation. To extend the efficiency of UVAtlas from single-frame to multi-frame scenarios, we propose a temporally consistent UVAtlas generation method compatible with V-DMC. Our method begins by applying keypoint tracking to capture the motion of the input sequence. Next, we perform patch partitioning and mapping to ensure consistent patches across frames. Each patch is then parameterized by minimizing geodesic distance distortion. Finally, all matched patches are packed into the same position within the texture domain. Our approach successfully generates consistent texture maps across an entire GOF (Group of Frames), significantly reducing the texture bitrate. Experimental results on the MPEG V-DMC test sequences demonstrate that our method achieves significant BD-rate improvements over the anchor of −13.9%, −13.9%, −10.6%, −14.5%, and −12.0% for D1, D2, Luma, Cb, and Cr PSNR metrics, respectively.