Combined transform of DCT-WHT with two-source decomposition of interframe prediction errors generated by motion-compensated coding

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Combined transform of DCT-WHT with two-source decomposition of interframe prediction errors generated by motion-compensated coding

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© The Institution of Electrical Engineers
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The performance of transform coding of motion-compensated prediction errors is poor, mainly due to the characteristics of prediction errors with low correlations. We propose a two-source decomposition scheme which increases the correlation of prediction errors, and a combined transform of DCT-WHT for decomposed prediction errors. The performance of the proposed algorithm is also compared to the existing classical and adaptive DCTs.

Inspec keywords: filtering and prediction theory; picture processing; encoding; transforms

Other keywords: image processing; DCT-WHT; interframe prediction errors; Walsh-Hadamard transform; two-source decomposition; motion-compensated coding; combined transform; discrete cosine transform; transform coding

Subjects: Codes; Pattern recognition; Integral transforms; Optical information, image and video signal processing; Integral transforms

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