A design method OF 2-D axial-symmetric paraunitary filter banks with a lattice structure

Author

Muramatsu, Shogo ; Yamada, Akihiko ; Kiya, Hitoshi

Author_Institution

Dept. of Electr. Eng., Tokyo Metropolitan Univ., Hachioji, Japan

fYear

1998

fDate

8-11 Sept. 1998

Firstpage

1

Lastpage

4

Abstract

A lattice structure of 2-D axial-symmetric paraunitary filter banks (ASPUFBs) is proposed, which makes it possible to design such filter banks in a systematic manner. ASPUFBs consist of non-separable axial-symmetric (AS) filters, and can be regarded as a subclass of non-separable linear-phase paraunitary (PU) ones. The AS property is desirable for image processing, because it enables us to use the symmetric extension method. Since our proposed system structurally restricts both the PU and AS properties, it can be designed by using an unconstrained optimization process. A design example will be given to show the significance of the lattice structure.

Keywords

channel bank filters; data compression; image coding; lattice theory; optimisation; 2D axial-symmetric paraunitary filter banks; ASPUFB; data compression; design method; image processing; lattice structure; nonseparable axial-symmetric filters; nonseparable linear-phase paraunitary ones; subband coding; symmetric extension method; unconstrained optimization process; Design methodology; Encoding; Gain; Image coding; Lattices; Optimization; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference (EUSIPCO 1998), 9th European

Conference_Location

Rhodes

Print_ISBN

978-960-7620-06-4

Type

conf

Filename

7089706