The hierarchical vector quantization (HVQ) image-compression technology significantly advances the state-of-the-art of motion video transmission for two-way video-conferencing. HVQ technology provides approximately a 70% improvement in transmission efficiency over motion-compensated transform algorithm, the most advanced image-compression technology in the world prior to HVQ. In order to show how the HVQ works, the author describes the compression techniques that preceded it. It is concluded that HVQ greatly improves upon transform coding, significantly enhancing image quality by eliminating the artifacts and other image distortions inherent in transform coding.


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    Title :

    Technical backgrounder-hierarchical vector quantization


    Additional title:

    Ueber die Datenreduktion bei der HVQ-Technik


    Contributors:


    Publication date :

    1988


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English






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