Title :
A Three-Step Nonlinear Lifting Scheme for Lossless Image Compression
Author :
Piella, Gemma ; Pesquet-Popescu, Béatrice
Author_Institution :
Univ. Pompeu Fabra, Barcelona
fDate :
Sept. 16 2007-Oct. 19 2007
Abstract :
We propose an adaptive wavelet transform that results in fewer large detail coefficients while preserving image contours in the approximation subband. The transform is constructed with a three-step nonlinear lifting scheme: a fixed prediction followed by a space-varying update and a non-additive prediction. The interest of the proposed scheme is demonstrated for nearly lossless compression.
Keywords :
data compression; image coding; lifting; wavelet transforms; adaptive wavelet transform; image contours; three-step nonlinear lifting scheme; Adaptive signal processing; Compression algorithms; Decorrelation; Image coding; Nonlinear filters; Nonlinear systems; Signal processing algorithms; Space technology; Transform coding; Wavelet transforms; Image coding; adaptive signal processing; nonlinear system; wavelet transforms;
Conference_Titel :
Image Processing, 2007. ICIP 2007. IEEE International Conference on
Conference_Location :
San Antonio, TX
Print_ISBN :
978-1-4244-1437-6
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2007.4378989
