Executive Summary

Transmission of real-time multimedia information over data networks is an emerging discipline with applications in a number of business, medicine and educational activities. The main objective of this research would be to explore the usage of open source Discrete Wavelet Transform (DWT) based codec within some appropriate video conferencing system (e.g. SIP) for conferencing purposes. Based on the analysis of these techniques, a new algorithm and implementation will be developed that would aim to improve the coding efficiency and computational complexity in wavelet based video compression and real-time video communication. One main objective is to have a scalable video codec to cater different resolutions and frame rate.

Digital video is being adopted in a vast array of applications ranging from fixed and mobile telephony to real-time video conferencing, DVD and high definition digital television. Applications such as video conferencing are strongly affected by bandwidth constraints and have strict processing-time limitations to provide online data for real-time communication. The increase in demand for such applications has motivated the need for efficient video compression algorithms that can produce acceptable video quality at high compression rates. Wavelet technology can enable high quality digital video compression by removing redundancy in individual frames as well as between successive frames without any blocking artifacts. The aim of this research initiative is to investigate video coding schemes using wavelet transforms especially with a view to develop a hybrid scheme that can decode both wavelet transform based as well as DCT block based encoded streams.

Main objective of this project is to develop a wavelet transform based video conferencing system that will result in better utilization of bandwidth in heterogeneous networks.

The key benefits of this project are given below:

• This project will help in data communication services, telemedicine services and education, by reaching out to the remote areas of the country.

• It will develop a real-time video conferencing system based on wavelet (or hybrid DWT-DCT) based video codec.

• It will facilitate Off-shore businesses.