A DCT Approximation for Image Compression

被引：122

作者：

Cintra, Renato J. ^{[1
,2
]}

Bayer, Fabio M. ^{[3
]}

机构：

[1] Univ Fed Pernambuco, Dept Estat, Recife, PE, Brazil

[2] Univ Akron, Dept Elect & Comp Engn, Akron, OH 44325 USA

[3] Univ Fed Fronteira Sul, Erechim, Brazil

来源：

IEEE SIGNAL PROCESSING LETTERS | 2011年 / 18卷 / 10期

关键词：

DCT approximation; image compression; low-complexity transforms; TRANSFORM;

D O I：

10.1109/LSP.2011.2163394

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 orthogonal approximation for the 8-point discrete cosine transform (DCT) is introduced. The proposed transformation matrix contains only zeros and ones; multiplications and bit-shift operations are absent. Close spectral behavior relative to the DCT was adopted as design criterion. The proposed algorithm is superior to the signed discrete cosine transform. It could also outperform state-of-the-art algorithms in low and high image compression scenarios, exhibiting at the same time a comparable computational complexity.

引用

页码：579 / 582

页数：4

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