Wavelet based hybrid image coding scheme

Author

Yu, Tian-Hu ; Mitra, Sanjit K.

Author_Institution

Dept. of Inf. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong

Volume

1

fYear

1997

fDate

9-12 Jun 1997

Firstpage

377

Abstract

This paper describes a computationally efficient hybrid image coding scheme. The proposed hybrid coding scheme combines the advantages of simple hardware complexity of the block discrete cosine transform coding and the high performance of the embedded zerotree discrete wavelet transform coding. It is based on the following five key features: (1) one-scale discrete wavelet transform of the input image resulting in four subband images (LL, LH, HL and HH), (2) block discrete cosine transform coding of the LL band image, (3) nonlinear transformations of the residual image of the LL band, the LH, HL and HH images, (4) generation of zerotree structure of the nonlinearly transformed coefficients, and (5) lossless data compression via adaptive arithmetic coding of the zerotree structured data

Keywords

data compression; discrete cosine transforms; image coding; transform coding; wavelet transforms; adaptive arithmetic coding; block DCT coding; computationally efficient coding scheme; discrete cosine transform coding; lossless data compression; nonlinear transformations; one-scale discrete wavelet transform; subband images; wavelet based hybrid image coding scheme; zerotree structure; zerotree structured data; Arithmetic; Computational complexity; Data compression; Discrete cosine transforms; Discrete wavelet transforms; Hardware; Image coding; Image generation; Image storage; Transform coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on

Print_ISBN

0-7803-3583-X

Type

conf

DOI

10.1109/ISCAS.1997.608746

Filename

608746