{"ID":5935619,"CreatedAt":"2026-07-07T01:22:02.77346169Z","UpdatedAt":"2026-07-07T02:10:06.972658124Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2607.03576","arxiv_id":"2607.03576","title":"Motion Estimation Techniques for Volumetric Video Attribute Compression","abstract":"Point cloud compression relies on techniques to compress both geometry and attributes. Motion-based approaches for dynamic solid point cloud geometry compression within the geometry-based point cloud compression (G-PCC) framework have achieved significant reductions in geometry rate. However, motion-based techniques for attribute compression remain underexplored, making it challenging to achieve significant reductions in the temporal redundancy of attributes. Firstly, this paper proposes a geometry-based inter-coding scheme to compress the attributes of dynamic solid point clouds. Secondly, a graph-based motion-estimation scheme for point-cloud attribute compression is proposed. Thirdly, an interpolation-free fractional-voxel motion estimation method is proposed to refine motion accuracy to fractional-voxel precision. Our experimental results on the MPEG point cloud dataset show that the proposed scheme outperforms G-PCC, GeS-TM, and V-PCC in lossless and lossy geometry conditions. We achieve average bitrate savings of $55.3\\%$, $42.3\\%$, and $16.5\\%$ over G-PCC, GeS-TM, and V-PCC, respectively, under lossy-geometry conditions.","short_abstract":"Point cloud compression relies on techniques to compress both geometry and attributes. Motion-based approaches for dynamic solid point cloud geometry compression within the geometry-based point cloud compression (G-PCC) framework have achieved significant reductions in geometry rate. However, motion-based techniques fo...","url_abs":"https://arxiv.org/abs/2607.03576","url_pdf":"https://arxiv.org/pdf/2607.03576v1","authors":"[\"Haoran Hong\",\"Eduardo Pavez\",\"Antonio Ortega\",\"Ryosuke Watanabe\",\"Keisuke Nonaka\"]","published":"2026-07-03T19:36:06Z","proceeding":"eess.IV","tasks":"[\"eess.IV\",\"cs.CV\"]","methods":"[]","has_code":false}