Abstract—Video compression plays an important role in video signal processing, transmission and storage. Since the available bandwidth for transmission is very limited, Multimedia Applications such as video conferencing, video on demand, video telephony and remote sensing are not possible without compression. A lot of video compression techniques have been developed and the video signal transmission has followed at data rates below 64kbps.Wavelet transform based motion compensated video codec performs better compression in order to meet the rate and distortion constraint in video transmission for the available bandwidth than the block based techniques, which are followed in standard video transmissions such as H.261 and H.263.But the efficiency of those technique’s depends on the way in which it estimates and compensates the object motions in the video sequence. Wavelet based embedded image coder is quite attractive in modern multimedia applications. Wavelet transform, bit plane coding and other techniques make embedded image coder practical and also provide efficient compression. In this paper, we have proposed a novel video coding using swarm intelligence in dual tree complex wavelet transform for video coding. The 3-D DDWT is an attractive video representation because it isolates motion along different directions in separate sub bands. However, it is an over-complete transform with redundancy, which is going to be eliminated by choosing optimal sub bands with the help of Noise shaping followed by an Improved Particle Swarm Optimization (PSO). The proposed video codec does not require motion compensation and provides better performance than the 3D SPIHT (Embedded type) codec, both objectively and subjectively, and the coder allows full scalability in spatial, temporal and quality dimensions.
Index Terms—Dual tree Discrete Wavelet Transform, Noise Shaping, Particle Swarm Optimization.
M. Thamarai, Research Scholar, GCT, Coimbatore, Assistant Professor/ECE Dept., Karpagam College of Engineering, Coimbatore, India. (Email:sreethamarai2000@yahoo.co.in).
R. Shanmugalakshmi, Assistant Professor, Department OF CSE, GCT, Coimbatore, India (email: shanmuga_lakshmi@yahoo.co.in).
Cite: M. Thamarai and R. Shanmugalakshmi, "Video coding Technique using 3-D Dual tree Complex Wavelet Transform with Improved Particle Swarm Optimization," International Journal of Engineering and Technology vol. 2, no. 3, pp. 296-301, 2010.
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