An Interframe Coding Scheme Matching Different DCT Algorithms by Use of Leaky Prediction

抄録

This paper proposes an interframe coding system which uses leaky prediction to eliminate mismatch noise that arises when codecs using different DCT schemes are connected. The system acheives FDCT-IDCT mismatch noise suppression without the insertion of intraframe coded data as proposed in the international coding standard H.261 but complies with all other specsfications. The use of leaky prediction results in loss of coding efficiency and deterioration of picture quality in the image's static areas thus the paper then discusses these effects and proposes solutions which are tested in simulation experiments. We then provide comparative data from these expriments and discuss the codec structure required for this scheme.