Image coding in wavelet transform domain using non-linear quincunx interpolation filtering

Author

Lim, Eunsung ; Chang, Sijung ; Lee, Moon Ho

Author_Institution

Dept. of Inf. & Telecommun. Eng., Chonbuk Nat. Univ., Chonju, South Korea

Volume

2

fYear

1996

fDate

5-7 May 1996

Firstpage

643

Abstract

A method which improve the quality of the reconstructed image obtained from the wavelet transform which is appropriate for the human visual system using non-linear quincunx interpolation filtering is proposed. A straightforward method to extend the 1-D wavelet basis to the 2-D wavelet basis is the separable wavelet transform. Approximation images and detail images are obtained with a multiresolution image representation. Each detail image has horizontal direction edge, vertical direction edge and diagonal direction edge information respectively. Non-linear interpolation filtering of each detail image improve the quality (PSNR) of the reconstructed image by some 1-2 dB

Keywords

filtering theory; image coding; image reconstruction; image representation; image resolution; interpolation; nonlinear filters; transform coding; wavelet transforms; 2-D wavelet basis; PSNR; approximation images; diagonal direction edge information; horizontal direction edge information; human visual system; image coding; image reconstruction; multiresolution image representation; nonlinear quincunx interpolation filtering; reconstructed image quality; separable wavelet transform; vertical direction edge information; wavelet transform domain; Filtering; Humans; Image coding; Image reconstruction; Image representation; Image resolution; Interpolation; Visual system; Wavelet domain; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Technology Proceedings, 1996. ICCT'96., 1996 International Conference on

Conference_Location

Beijing

Print_ISBN

0-7803-2916-3

Type

conf

DOI

10.1109/ICCT.1996.544965

Filename

544965