Parallel programming with MPI
Efficient Wavelet-Based Video Coding
IPDPS '02 Proceedings of the 16th International Parallel and Distributed Processing Symposium
Journal of Parallel and Distributed Computing
A study of I/O methods for parallel visualization of large-scale data
Parallel Computing - Parallel graphics and visualization
Parallel 3-Dimensional DCT Computation on k-Ary n-Cubes
HPCASIA '05 Proceedings of the Eighth International Conference on High-Performance Computing in Asia-Pacific Region
High performance JPEG 2000 and MPEG-4 VTC on SMPs using OpenMP
Parallel Computing - OpenMp
A real-time wavelet-domain video denoising implementation in FPGA
EURASIP Journal on Embedded Systems
Journal of Signal Processing Systems
Hi-index | 0.00 |
We introduce and evaluate the implementations of three parallel video-sequences decorrelation algorithms. The proposed algorithms are based on the nonalternating classic three-dimensional wavelet transform (3D-WT). The parallel implementations of the algorithms are developed and tested on a shared memory system, an SGI origin 3800 supercomputer making use of a message-passing paradigm. We evaluate and analyze the performance of the implementations in terms of the response time and speed-up factor by varying the number of processors and various video coding parameters. The key points enabling the development of highly efficient implementations rely on the partitioning of the video sequences into groups of frames and a workload distribution strategy supplemented by the use of parallel I/O primitives, for better exploiting the inherent features of the application and computing platform. We also evaluate the effectiveness of our algorithms in terms of the first-order entropy.