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Enhancement of Color Images by Scaling the DCT Coefficients and Interpolation

by Elsa Alias, Jilu George
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 60 - Number 8
Year of Publication: 2012
Authors: Elsa Alias, Jilu George
10.5120/9709-4171

Elsa Alias, Jilu George . Enhancement of Color Images by Scaling the DCT Coefficients and Interpolation. International Journal of Computer Applications. 60, 8 ( December 2012), 1-6. DOI=10.5120/9709-4171

@article{ 10.5120/9709-4171,
author = { Elsa Alias, Jilu George },
title = { Enhancement of Color Images by Scaling the DCT Coefficients and Interpolation },
journal = { International Journal of Computer Applications },
issue_date = { December 2012 },
volume = { 60 },
number = { 8 },
month = { December },
year = { 2012 },
issn = { 0975-8887 },
pages = { 1-6 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume60/number8/9709-4171/ },
doi = { 10.5120/9709-4171 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T21:05:58.940351+05:30
%A Elsa Alias
%A Jilu George
%T Enhancement of Color Images by Scaling the DCT Coefficients and Interpolation
%J International Journal of Computer Applications
%@ 0975-8887
%V 60
%N 8
%P 1-6
%D 2012
%I Foundation of Computer Science (FCS), NY, USA
Abstract

This paper presents the enhancement of color images in the frequency domain with interpolation. The novelty in our approach is the treatment of the chromatic components, while previous techniques treated only the luminance components and the enhanced image is interpolated with bicubic interpolation. After interpolation, the interpolated surface is smoother than corresponding surface obtained by the enhancement. The treatment of chromatic components improves the visual quality of the images to a great extent. The proposed technique, is more efficient than the spatial domain method. This paper investigate how we can increase the number of pixels and there by smoothening the enhanced surface.

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Index Terms

Computer Science
Information Sciences

Keywords

color image enhancement discrete cosine transform Y-Cb-Cr color space DC-AC coefficients bicubic interpolation

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