Low-Complexity Scalable Video Coding through Table Lookup VQ and Index Coding
IDMS/PROMS 2002 Proceedings of the Joint International Workshops on Interactive Distributed Multimedia Systems and Protocols for Multimedia Systems: Protocols and Systems for Interactive Distributed Multimedia
Optimized memory requirements for wavelet-based scalable multimedia codecs
Journal of Embedded Computing - Low-power Embedded Systems
Journal of Signal Processing Systems
Memory hierarchy energy cost of a direct filtering implementation of the wavelet transform
PATMOS'05 Proceedings of the 15th international conference on Integrated Circuit and System Design: power and Timing Modeling, Optimization and Simulation
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A source coding algorithm is presented which delivers a spatiotemporal scalable encoded bitstream. Motion compensated temporal filtering is combined with a spatial subband/wavelet pyramid to provide an efficient 3-D multiresolution representation. Error-feedback hierarchical coding permits near-optimal results for each subvideo. The proposed ordering of refinement addresses the noncommutative property of motion compensated temporal filtering and spatial subband/wavelet analysis. Finally, adaptive conditional arithmetic coding of quantizer significance maps increases coding efficiency. Experimental results demonstrate a significant improvement in performance over earlier published algorithms. The code-and-refine nature of our hierarchical algorithm makes it possible to use the algorithm as a scalable extension to other source coding algorithms. Finally, the complexity of the algorithm is modest and is well suited to parallel implementation