DocumentCode
2824463
Title
Image Enhancement Using a Contrast measure in the Discrete Wavelet Transform
Author
Abdelwahab, Ahmed A. ; Ahmed, Mohamed K. ; Hashem, Somaya H.
Author_Institution
Helwan Univ., Helwan
fYear
2007
fDate
13-15 March 2007
Firstpage
1
Lastpage
11
Abstract
In this paper, a new image enhancement technique based on a proposed contrast measure in the discrete wavelet transform is proposed. The contrast measure is defined as the ratio of high spatial-frequency content and low spatial-frequency content in the subbands of the discrete wavelet transform matrix. The obtained enhanced images from the proposed technique have better visual quality when compared with previous discrete cosine transform- based enhancement technique.
Keywords
discrete cosine transforms; discrete wavelet transforms; image enhancement; transfer function matrices; contrast measure; discrete wavelet transform; image enhancement; spatial-frequency content; transform matrix; Discrete cosine transforms; Discrete wavelet transforms; Fourier transforms; Frequency domain analysis; Histograms; Image analysis; Image enhancement; Image processing; Wavelet domain; Wavelet transforms; Image enhancement; contrast measure and discrete wavelet transform;
fLanguage
English
Publisher
ieee
Conference_Titel
Radio Science Conference, 2007. NRSC 2007. National
Conference_Location
Cairo
Print_ISBN
977-5031-86-9
Type
conf
DOI
10.1109/NRSC.2007.371369
Filename
4234116
Link To Document