DocumentCode
951942
Title
Low-complexity 8×8 transform for image compression
Author
Bouguezel, Saad ; Ahmad, M. Omair ; Swamy, M.N.S.
Author_Institution
Dept. of Electron., Univ. of Setif, Setif
Volume
44
Issue
21
fYear
2008
Firstpage
1249
Lastpage
1250
Abstract
An efficient 8 times 8 sparse orthogonal transform matrix is proposed for image compression by appropriately introducing some zeros in the 8 times 8 signed discrete cosine transform (SDCT) matrix. An algorithm for its fast computation is also developed. It is shown that the proposed transform provides a 25% reduction in the number of arithmetic operations with a performance in image compression that is much superior to that of the SDCT and comparable to that of the approximated discrete cosine transform.
Keywords
data compression; discrete cosine transforms; image coding; sparse matrices; discrete cosine transform matrix; image compression; sparse orthogonal transform matrix;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20082239
Filename
4648975
Link To Document