Title :
A Comparative Study of Multirate Filter-Bank Structures for Wavelet Image Coding
Author :
Lotfy, Mona ; Rashwan, Ashraf
Author_Institution :
Dept. of Electr. Eng., Alexandria Univ.
Abstract :
In this paper we compare hardware efficiency and compression performance of various filter-bank structures available for the realization of Daubechies 9/7 biorthogonal filter bank used in wavelet image coding and specified in JPEG 2000 image coding standard. The comparison includes convolution-based structures, as the direct-form, cascade, and polyphase structures, and the lifting-based structure. While the lifting-based structure requires half the number of operations for realizing a biorthogonal filter bank, direct-form and polyphase structures have a better finite-word-length performance. Moreover; operations in a polyphase filter bank require processing at half the rate required by lifting-based structures
Keywords :
channel bank filters; code standards; convolutional codes; data compression; image coding; roundoff errors; wavelet transforms; Daubechies 9-7 biorthogonal filter bank; JPEG 2000; convolution-based structure; finite-word-length performance; lifting-based structure; wavelet image coding standard; Biomedical signal processing; Convolution; Convolutional codes; Discrete wavelet transforms; Filter bank; Finite impulse response filter; Fourier transforms; Hardware; Image coding; Wavelet analysis; biorthogonal wavelets; convolution; discrete wavelet transform; filter banks; lifting scheme; multiresolution analysis;
Conference_Titel :
Radio Science Conference, 2006. NRSC 2006. Proceedings of the Twenty Third National
Conference_Location :
Menoufiya
Print_ISBN :
977-5031-84-2
Electronic_ISBN :
977-5031-84-2
DOI :
10.1109/NRSC.2006.386337
