Conference paper
Dynamic sliding window width selection strategies for Rate-distortion optimal Vertex-Based shape coding algorithms
2006 8th international Conference on Signal Processing
8th International Conference on Signal Processing (Beijing, China, 16/11/2006–20/11/2006)
2006
Abstract
Vertex-based operational-rate-distortion (ORD) shape coding algorithms frequently use a sliding window (SW) to both avoid trivial solutions and improve computational efficiency, with the choice of the SW-width enabling the encoder to trade between bit-rate and computational complexity. This paper presents some new strategies for dynamically determining the SW-width adaptive within the rate-distortion constraints. From a constrained bit-rate perspective, this is achieved by estimating the maximum number of significant points feasible for a prescribed bit-rate, while for an admissible distortion, an additional rate trade-off parameter selects the SW-width, with the optimal width determined for an encoder constrained by both rate and distortion. An efficient shape-adaptive technique is also presented that exploits the curvature of a shape to compute the SW-width. Experimental results confirm that the SW-width determined using the proposed strategies can be seamlessly and efficiently embedded into the ORD shape coding framework...
Details
- Title
- Dynamic sliding window width selection strategies for Rate-distortion optimal Vertex-Based shape coding algorithms
- Authors/Creators
- F. Sohel (Author/Creator) - Monash UniversityG. Karmakar (Author/Creator) - Monash UniversityL. Dooley (Author/Creator) - Monash University
- Publication Details
- 2006 8th international Conference on Signal Processing
- Conference
- 8th International Conference on Signal Processing (Beijing, China, 16/11/2006–20/11/2006)
- Identifiers
- 991005544610307891
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Conference paper
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