Low-complexity 8 x 8 transform for image compression

被引：79

作者：

Bouguezel, S. ^{[1
]}

Ahmad, M. O. ^{[2
]}

Swamy, M. N. S. ^{[2
]}

机构：

[1] Univ Setif, Dept Elect, Fac Engn, Setif 19000, Algeria

[2] Concordia Univ, Dept Elect & Comp Engn, Montreal, PQ H3G 1M8, Canada

来源：

ELECTRONICS LETTERS | 2008年 / 44卷 / 21期

关键词：

D O I：

10.1049/el:20082239

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An efficient 8 x 8 sparse orthogonal transform matrix is proposed for image compression by appropriately introducing some zeros in the 8 x 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.

引用

页码：1249 / U30

页数：2

共 6 条

[1] DEVELOPMENT OF INTEGER COSINE TRANSFORMS BY THE PRINCIPLE OF DYADIC SYMMETRY [J].

CHAM, WK .

IEE PROCEEDINGS-I COMMUNICATIONS SPEECH AND VISION, 1989, 136 (04) :276-282

[2] Multiplication-free 8x8 2D DCT architecture using algebraic integer encoding [J].

Dimitrov, V ;

Wahid, K ;

Jullien, G .

ELECTRONICS LETTERS, 2004, 40 (20) :1310-1311

[3] SCALED DCTS ON INPUT SIZES THAT ARE COMPOSITE [J].

FEIG, E ;

LINZER, E .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1995, 43 (01) :43-50

[4] A new square wave transform based on the DCT [J].

Haweel, TI .

SIGNAL PROCESSING, 2001, 81 (11) :2309-2319

[5] Scalable variable complexity approximate forward DCT [J].

Lengwehasatit, K ;

Ortega, A .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, 2004, 14 (11) :1236-1248

[6] The BinDCT: Fast multiplierless approximation of the DCT [J].

Tran, TD .

IEEE SIGNAL PROCESSING LETTERS, 2000, 7 (06) :141-144

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