Wavelet coding of image using quadtree representation and block entropy coding

Author

Zheng, Wenxing ; Nan, Hua

Author_Institution

Lab. of TV Technol., Beijing Univ. of Posts & Telecommun., China

Volume

4

fYear

1997

fDate

21-24 Apr 1997

Firstpage

2709

Abstract

A new efficient image coding scheme, based on quadtree representation and block entropy coding (QRBEC), for encoding the wavelet transform coefficients of images is presented. The property of HVS is also incorporated into the quantization process. In addition, how to flexibly control the quantization level as well as output bitrate of the coder is also investigated. The coding efficiency of the coder is quite competitive with the well-known EZW coder, and requires less computation burden. The proposed coding scheme can also be applied in image sequence coding, resulting in satisfactory performance

Keywords

data compression; entropy codes; image coding; image representation; image sequences; quadtrees; quantisation (signal); transform coding; variable length codes; wavelet transforms; block entropy coding; coding efficiency; image coding; image sequence; quadtree representation; quantization process; wavelet coding; wavelet transform coefficients; Electronic switching systems; Entropy coding; Filters; Frequency; Image coding; Laboratories; Quantization; TV; Wavelet coefficients; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on

Conference_Location

Munich

ISSN

1520-6149

Print_ISBN

0-8186-7919-0

Type

conf

DOI

10.1109/ICASSP.1997.595348

Filename

595348