Imageenhancement using a contrast measure in the compressed domain
Jinshan Tang
Peli, E.
Acton, S.
Dept. of Electr. & Comput. Eng., Univ. of Virginia, Charlottesville, VA, USA
This paper appears in: Signal Processing Letters, IEEE Publication Date: Oct. 2003
Volume: 10
,
Issue: 10
On page(s):
289
- 292
ISSN: 1070-9908
Digital Object Identifier: 10.1109/LSP.2003.817178
Current Version Published: 2003-09-23
Abstract
An imageenhancement 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.
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