Image enhancement using a contrast measure in the compressed domain

被引：187

作者：

Tang, JS ^{[1
]}

Peli, E

Acton, S

机构：

[1] Univ Virginia, Dept Elect & Comp Engn, Charlottesville, VA 22904 USA

[2] Harvard Univ, Sch Med, Schepens Eye Res Inst, Boston, MA 02114 USA

来源：

IEEE SIGNAL PROCESSING LETTERS | 2003年 / 10卷 / 10期

基金：

美国国家科学基金会;

关键词：

compressed domain; contrast measure; discrete cosine transform (DCT); human vision system; image enhancement; JPEG/MPEG;

D O I：

10.1109/LSP.2003.817178

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 image enhancement algorithm for images compressed using the JPEG standard is presented. The algorithm is based on a contrast measure defined within the discrete cosine transform (DCT) domain. The advantages of the psychophysically motivated algorithm are 1) the algorithm does not affect the compressibility of the original image because it enhances the images in the decompression stage and 2) the approach is characterized by low computational complexity. The proposed algorithm is applicable to any DCT-based image compression standard, such as JPEG, MPEG 2, and H. 261.

引用

页码：289 / 292

页数：4

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