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1. INTRODUCTION |
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Digital video compression is one of the key issues in video coding, enabling efficient interchange and distribution of visual information. New applications in the field of communication, multimedia and digital television broadcasting require highly efficient, robust and flexible digital video compression techniques. Multimedia applications range for instance from desktop video conferencing to digital video broadcasting. The integration of motion video as an integral part of multimedia environments is technologically one of the most demanding tasks, due to the high data rates and real-time restraints. Importance of the problem impelled new studies in the area of video compression. The rate required to encode a full motion video signal at VHS quality has come down from 20 Mbit/s around 1980 to well below 1 Mbit/s today. This reduction of bit-rate more than anything else has led to the arrival of video to the desktop and hundreds of channels to the home.
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