Sciweavers

Share
ICIP
2003
IEEE

Quantization of adaptive 2D wavelet decompositions

12 years 7 months ago
Quantization of adaptive 2D wavelet decompositions
Classical linear wavelet representations of images have the drawback that they are not well-suited to represent edge information. To overcome this problem, nonlinear multiresolution decompositions are being designed that can take into account the characteristics of the input signal/image. In our previous work [1, 2] we have introduced an adaptive lifting framework, that does not require bookkeeping but has the property that it processes edges and homogeneous regions in an image in a different fashion. The current paper discusses the effects of quantization in such an adaptive wavelet decomposition. We provide conditions for recovering the original decisions at the synthesis and for relating the reconstruction error to the quantization error. Such an analysis is essential for the application of these adaptive decompositions in image compression algorithms.
Béatrice Pesquet-Popescu, Henk J. A. M. Hei
Added 24 Oct 2009
Updated 27 Oct 2009
Type Conference
Year 2003
Where ICIP
Authors Béatrice Pesquet-Popescu, Henk J. A. M. Heijmans, G. Charith K. Abhayaratne, Gemma Piella
Comments (0)
books