Title :
A lattice structure for linear-phase perfect reconstruction filter banks with mirror image symmetric frequency response
Author :
Wu, Chao ; Zhu, Wei Ping ; Swamy, M.N.S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, QC
Abstract :
In this paper, the lattice structure of a class of filter banks that possesses both the linear-phase property and the mirror-image symmetry, referred to as MIS-LPPRFB, has been investigated. By combining the MIS and the LP constraints and proposing a new simplified scheme, a reduced lattice structure with fewer parameters has been developed. It is shown that the introduction of the MIS has imposed certain constraints on the invertible matrices in the lattice structure of the conventional LPPRFBs, reducing the number of free parameters by nearly one-half Using the new lattice structure, the optimization design problem of MIS-LPPRFBs is also addressed with an objective of achieving a high performance filter bank for its use in image compression coding.
Keywords :
channel bank filters; data compression; frequency response; image coding; image reconstruction; matrix algebra; LP constraints; MIS-LPPRFB; image compression coding; invertible matrices; linear-phase perfect reconstruction filter banks; linear-phase property; mirror image symmetric frequency response; mirror-image symmetry; reduced lattice structure; Chaotic communication; Design optimization; Filter bank; Frequency response; Gallium nitride; Image coding; Image reconstruction; Lattices; Mirrors; Signal processing;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4542115
