Video Coding Technique Using 3D Dualtree Discrete Wavelet Transform with Multi Objective Particle Swarm Optimization Approaches
- 1 Department of Electronics and Communication Engineering, Faculty of Engineering, Karpagam College of Engineering, Coimbatore, India
- 2 Department of Computer Science and Engineering, Faculty of Engineering, Government College of Technology, Coimbatore, India
Wavelet-based image compression with Wavelet transform based motion compensated video codec performs better compression to meet the rate and distortion constraints in video transmission with the available bandwidth than the block based techniques. However, it is well known that the 2D DWT does not represent directional features of images efficiently. Lots of efforts have been contributed to multiscale directional representation. In this study Video coding using Dualtree Discrete Wavelet Transform is considered and its expansive nature is reduced by noise shaping algorithm and high compression ratio is achieved by means of the selection of optimal coefficients using MOPSO method. In Multiobjective Optimization (MO) problems, more than one objective functions have to be minimized simultaneously. In the proposed method, Entropy of the sub bands and Mean square error are considered for optimization with the constraints of frame rate. The two different types of MOPSO approaches such as weighted aggregation approach and Vector Evaluated PSO are used to select the optimum subbands. The two techniques outputs are compared with the standard 3D SPIHT coding.
Copyright: © 2013 Thamarai Muthusamy and Shanmugalakshmi Ramachandran. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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- Dual Tree Discrete Wavelet Transform
- Noise Shaping Algorithm
- Multi Objective Particle Swarm Optimization
- Multiobjective Optimization
- Mean Square Error
- Vector Evaluated PSO