Layered DCT still image compression

Author

Li, Jiankun ; Li, Jin ; Kuo, C. C Jay

Author_Institution

Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA

Volume

7

Issue

2

fYear

1997

fDate

4/1/1997 12:00:00 AM

Firstpage

440

Lastpage

443

Abstract

Motivated by Shapiro´s (1993) embedded zerotree wavelet (EZW) coding and Taubman and Zakhor´s (1994) layered zero coding (LZC), we propose a layered discrete cosine transform (DCT) image compression scheme, which generates an embedded bit stream for DCT coefficients according to their importance. The new method allows progressive image transmission and simplifies the rate-control problem. In addition to these functionalities, it provides a substantial rate-distortion improvement over the JPEG standard when the bit rates become low. For example, we observe a bit rate reduction with respect to the JPEG Huffman and arithmetic coders by about 60% and 20%, respectively, for a bit rate around 0.1 b/p

Keywords

channel capacity; data compression; discrete cosine transforms; image coding; rate distortion theory; transform coding; visual communication; embedded bit stream; layered DCT still image compression; layered discrete cosine transform image compression scheme; low bit rates; progressive image transmission; rate-control problem; rate-distortion; Arithmetic; Bit rate; Discrete cosine transforms; Discrete wavelet transforms; Entropy coding; Image coding; Image communication; Quantization; Rate-distortion; Transform coding;

fLanguage

English

Journal_Title

Circuits and Systems for Video Technology, IEEE Transactions on

Publisher

ieee

ISSN

1051-8215

Type

jour

DOI

10.1109/76.564125

Filename

564125