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Prediction and adaptive scanning in block-set wavelet image coder

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3 Author(s)
Yin, X.-W. ; Dept. of Electron. Syst. Eng., Univ. of Essex, Colchester, UK ; Fleury, M. ; Downton, A.C.

Conditional probability to predict sub-block significance improves the peak signal-to-noise ratio (PSNR) performance of a block-set wavelet image coder. Adaptive scanning of sub-blocks results in a further gain in PSNR performance. Together, the related algorithmic changes introduced by the authors result in competitive PSNR performance without the need for an arithmetic coding stage. As a consequence, timing tests reveal that the critical decoder computational complexity is reduced.

Published in:

Vision, Image and Signal Processing, IEE Proceedings -  (Volume:153 ,  Issue: 2 )