A hybrid video codec with block-based and mesh-based motion compensation modes

✍ Scribed by Yucel Altunbasak; A. Murat Tekalp

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 396 KB
• Volume: 9
• Category: Article
• ISSN: 0899-9457
• DOI: 10.1002/(sici)1098-1098(1998)9:4<248::aid-ima7>3.0.co;2-a

✦ Synopsis

This article presents a complete video codec which supname control grid interpolation. Recently, Nakaya et al. [7] proports both block-based and mesh-based motion compensation posed a hexagonal search procedure for motion estimation and modes. While the mesh-based modes are suitable for spatially contincompensation based on a regular mesh. Huang et al. extended this uous representation of in-plane rotations, zooms, and other motions approach using a hierarchical uniform mesh [8]. Nieweglowski et that can be represented by parametric mappings, the block-based al. [6] considered employing a nonuniform mesh. Wang et al. modes (especially overlapped block matching) perform better around [9] developed an optimization framework for MC based on an motion boundaries. Therefore, a hybrid codec with block-based and active mesh, which adapts to scene content. Altunbasak et al. mesh-based modes, which nicely complement each other, yields the [10] proposed practical algorithms for content-based mesh design best results over a wide range of video at low bit rates. Experimental and tracking. results with MPEG-4 test sequences are shown to demonstrate the performance of the proposed hybrid codec.