Hierarchical coding of 2D mesh geometry and motion

Peter J. L. van Beek; Isil Celasun; A. Murat Tekalp

doi:10.1117/12.298398

9 January 1998 Hierarchical coding of 2D mesh geometry and motion

Peter J. L. van Beek, Isil Celasun, A. Murat Tekalp

Proceedings Volume 3309, Visual Communications and Image Processing '98; (1998) https://doi.org/10.1117/12.298398
Event: Photonics West '98 Electronic Imaging, 1998, San Jose, CA, United States

Abstract

This paper proposes methods for construction and compression of hierarchical representations of 2D moving meshes. This representation consists of a hierarchy of Delaunay meshes, using image-based and shape-based criteria for mesh geometry simplification. The hierarchical compression technique is based on a nearest-neighbor ordering of mesh node points. This ordering serves to define the mesh boundary as well as a spatial prediction relation on the nodes, which is employed for differential node point location and motion vector coding. The proposed compression methods allow progressive transmission and quality scalability. The proposed hierarchical mesh representation can be applied in object-based video coding, storage and manipulation. Experimental results are provided comparing the compression performance of non-hierarchical coding and hierarchical coding, and evaluating the trade-off between mesh-based video object rendering quality and hierarchical mesh bitrate.

Citation Download Citation

Peter J. L. van Beek, Isil Celasun, and A. Murat Tekalp "Hierarchical coding of 2D mesh geometry and motion", Proc. SPIE 3309, Visual Communications and Image Processing '98, (9 January 1998); https://doi.org/10.1117/12.298398

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