Title :
New regular M-band orthogonal wavelet filter bank design using zero-insertion method
Author :
Kwon, Sung-Kyu ; Kim, Jae-Kuk
Author_Institution :
Dept. of Commun. Eng., Kum-oh Nat. Univ. of Technol.
fDate :
5/12/1994 12:00:00 AM
Abstract :
A new regular M-band orthogonal wavelet filter bank (OWFB) is designed by inserting zeros into the filter transfer functions, which improves the characteristics of the frequency magnitude response. In an application of the sub-band coding of a still image, the new OWFB improves the PSNR by ~1 dB in the reconstructed image over the existing OWFB at the same bit rate
Keywords :
data compression; filtering and prediction theory; image coding; poles and zeros; transfer functions; wavelet transforms; PSNR; filter transfer functions; frequency magnitude response; reconstructed image; regular M-band orthogonal wavelet filter; still image; sub-band coding; wavelet filter bank design; zero-insertion method;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940528
