Hierarchical coding of super high definition images with subband+multistage VQ

Author

Furukawa, Isao ; Nomura, Mitsuru ; Ono, Sadayasu

Author_Institution

NTT Ttransmission Syst. Lab., Kanagawa, Japan

fYear

1991

fDate

14-17 Apr 1991

Firstpage

2637

Abstract

A subband based hierarchical coding algorithm is proposed and an examination is made of its coding performance for super high definition images. Several quadrature mirror filters are examined from the viewpoints of reconstruction accuracy, coding gain, and low pass characteristics. The two-stage vector quantization scheme is also introduced to control quantization accuracy in each subband. Hierarchical image reconstruction and efficient bit-rate compression can simultaneously be obtained by using the proposed algorithm

Keywords

data compression; encoding; picture processing; VQ; bit-rate compression; coding gain; coding performance; hierarchical coding algorithm; hierarchical image reconstruction; low pass characteristics; quadrature mirror filters; quantization accuracy; reconstruction accuracy; subband coding; super high definition images; vector quantisation; Filters; HDTV; Image coding; Image reconstruction; Image resolution; Image storage; Mirrors; Pixel; Signal resolution; Vector quantization;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on

Conference_Location

Toronto, Ont.

ISSN

1520-6149

Print_ISBN

0-7803-0003-3

Type

conf

DOI

10.1109/ICASSP.1991.150943

Filename

150943