Motion Compensation of Wavelet Coefficients with Wavelet Packet Based Motion Residual Coding

The recent emergence of multimedia applications in the last few years has motivated a considerable interest in the development of video compression algorithms aimed at the transmission (or storage) of video sequences at a variety of bandwidths. The ability to code, decode and display a video at different resolutions is of fundamental importance for a large class of applications such as: multipoint video distribution over the internet, video conferencing on ATM networks,etc. Existing video compression standards [2] have been tailored to a small set of specific bit rates. However, it becomes more and more important to be able to encode video streams at a variety of spatial and temporal resolutions (spatial and temporal scalability) with a single compression method. It would also be desirable to be able to apply some post-processing and enhancement algorithms after the video signal has been decoded. This is especially important when the channel capacity is significantly reduced. Most video compression stan-