Efficient implementation of a set of lifting based wavelet filters

Author

Andra, Kishore ; Chakrabarti, Chaitali ; Acharya, Tinku

Author_Institution

Arizona State Univ., Tempe, AZ, USA

Volume

2

fYear

2001

fDate

2001

Firstpage

1101

Abstract

Lifting based wavelet transform implementation not only helps in reducing the number of computations but also achieves lossy to lossless performance with finite precision. We first do a precision analysis for the set of seven filters proposed by the JPEG2000 verification model. We determine the precision required to implement the filters using fixed point 2´s complement arithmetic for lossless as well as lossy coding. Next we propose a unified architecture for implementing this set of filters for both the forward and the inverse transform

Keywords

data compression; digital filters; discrete wavelet transforms; fixed point arithmetic; image coding; inverse problems; transform coding; JPEG2000 verification model; Mentor Graphics VHDL compiler; Model Sim simulator; behavioral VHDL; discrete wavelet transform; fixed point 2´s complement arithmetic; floating point implementation; forward transform; image compression; inverse transform; lifting based wavelet filters; lifting based wavelet transform; lossless coding; lossy coding; precision analysis; wavelet based image codecs; Band pass filters; Discrete transforms; Discrete wavelet transforms; Fixed-point arithmetic; Image coding; Low pass filters; Matrix converters; Performance loss; Symmetric matrices; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on

Conference_Location

Salt Lake City, UT

ISSN

1520-6149

Print_ISBN

0-7803-7041-4

Type

conf

DOI

10.1109/ICASSP.2001.941112

Filename

941112