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Hierarchical 2D Mesh Representation, Tracking and Compression for Object-Based Video (1998)
| Content Provider | CiteSeerX |
|---|---|
| Author | Beek, Peter Van Tekalp, A. Murat Zhuang, Ning Celasun, Isil Xia, Minghui |
| Abstract | This paper proposes methods for designing, tracking and coding hierarchical 2D content-based mesh representations. The design procedure consists of constructing a fine-to-coarse hierarchy of Delaunay meshes, using image- and shape-based criteria for mesh geometry simplification. Hierarchical tracking employs a coarse-to-fine strategy with mesh-based motion vector optimization. We introduce new techniques to maintain the initial mesh hierarchy and topology during tracking by imposing certain constraints at each stage of the procedure. The hierarchical compression technique is based on a nearest-neighbor ordering of mesh node points. This ordering serves to identify the mesh boundary nodes as well as establishing spatial predictors for differential coding of node coordinates and motion vectors. The proposed hierarchical mesh representation, which has applications in object-based video manipulation, indexing, and compression, provides improved tracking performance (compared to a non-hiera... |
| File Format | |
| Volume Number | 9 |
| Journal | IEEE Trans. on Circ. and Syst. for Video Tech |
| Language | English |
| Publisher Date | 1998-01-01 |
| Access Restriction | Open |
| Subject Keyword | Mesh Representation Object-based Video Node Coordinate Spatial Predictor Nearest-neighbor Ordering Shape-based Criterion Hierarchical Compression Technique Object-based Video Manipulation Differential Coding Mesh Geometry Simplification Content-based Mesh Representation New Technique Mesh Boundary Node Certain Constraint Coarse-to-fine Strategy Design Procedure Mesh Node Point Delaunay Mesh Motion Vector Initial Mesh Hierarchy Proposed Hierarchical Mesh Representation Mesh-based Motion Vector Optimization Fine-to-coarse Hierarchy |
| Content Type | Text |
| Resource Type | Article |
