New dyadic transform for image compression

Author

Lo, Kwok-Tung ; Feng, Jian

Author_Institution

Dept. of Electron. Eng., Hong Kong Polytech. Univ., Hung Hom, Hong Kong

Volume

2

fYear

1995

fDate

30 Apr-3 May 1995

Firstpage

777

Abstract

In this paper, a new order-8 dyadic transform (DT) is proposed for image compression. The proposed DT can be computed using a fast structural algorithm with operations of addition and binary shift only. Performance evaluations using a statistical model and real images show that the proposed DT performs better than the two DTs proposed by Lo and Cham and very close to DCT. Simulation results also show that there is a certain degree of compatibility between DCT and the proposed DT. In other words, DCT can be replaced by the proposed DT in existing image coding systems with little degradation in image quality

Keywords

covariance matrices; image coding; transform coding; transforms; addition; binary shift; covariance matrix; fast structural algorithm; image coding systems; image compression; image quality; order-8 dyadic transform; performance evaluation; simulation; statistical model; transform coding gain; Computational complexity; Computational modeling; Costs; Discrete cosine transforms; Discrete transforms; Image coding; Performance evaluation; System testing; Transform coding; Video coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on

Conference_Location

Seattle, WA

Print_ISBN

0-7803-2570-2

Type

conf

DOI

10.1109/ISCAS.1995.519878

Filename

519878