This paper proposes an object-oriented coding method in very lowbit-rate channels, using the motion estimation technique based onmultiple frame prediction. In most existing methods, only the globalmotion components are transmitted. So the images containing abruptmotions and noise yield large error, even after texture compensationusing the discrete cosine transform (DCT). To reduce the globalmotion prediction error due to usage of rigid motion parameters,residual image mapping is employed. Since high computationalcomplexity is required for local motion correction using residualimage mapping, simplified global motion prediction prior to localmotion refinement parameter extraction is proposed to reduce theburden of the overall coder complexity. Computer simulation resultsshow that the proposed method gives good performances in terms of thesubjective quality, the peak signal to noise ratio.
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