Title :
A class of lifting based integer wavelet transform
Author_Institution :
Dept. of Electron. Eng., La Trobe Univ., Bundoora, Vic., Australia
fDate :
6/23/1905 12:00:00 AM
Abstract :
A class of integer wavelet transform (IWT) which are parametrized simply by one free parameter is presented . The class of IWT is obtained by a lifting based factorization on a class of 9/7 filter pair. The class includes the celebrated 9/7 filter pair of Cohen, Daubechies and Feauveau which is adopted in the upcoming JPEG2000 image compression standard. Within this class are lifting filters with simple rational coefficients which are close in characteristics to the irrational coefficient 9/7 pair employed in JPEG2000. By adjusting the free parameter, IWT with different properties and characteristics can be obtained. A study of the non-linearity of this class of IWT is also performed
Keywords :
data compression; discrete wavelet transforms; filtering theory; image coding; matrix decomposition; transform coding; 9/7 filter pair; DWT; JPEG2000 image compression standard; discrete wavelet transform; lifting based factorization; lifting based integer wavelet transform; nonlinearity; polyphase matrix factorization; rational coefficients; Arithmetic; Codecs; Computational efficiency; Convolution; Discrete wavelet transforms; Image coding; Low pass filters; Signal processing; Transform coding; Wavelet transforms;
Conference_Titel :
Image Processing, 2001. Proceedings. 2001 International Conference on
Conference_Location :
Thessaloniki
Print_ISBN :
0-7803-6725-1
DOI :
10.1109/ICIP.2001.959088
