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International Journal of Innovation and Applied Studies
ISSN: 2028-9324     CODEN: IJIABO     OCLC Number: 828807274     ZDB-ID: 2703985-7
 
 
Sunday 25 August 2019

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Contrast Enhancement of Gray Image using proposed mask in Discrete Cosine Transform Domain


Volume 9, Issue 4, December 2014, Pages 1459–1464

 Contrast Enhancement of Gray Image using proposed mask in Discrete Cosine Transform Domain

Nivedita V. Deshmukh Hippalgaonkar1 and Dr. Mrs. S.D. Apte2

1 Rscoe, Tathwade, Pune, India
2 Guide Rscoe, Tathwade, Pune, India

Original language: English

Received 30 September 2014

Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract


In this paper contrast of gray image is enhanced using proposed mask in discrete cosine transform and discrete wavelet transform domain. In this technique the image is converted into DCT and DWT domain and respective coefficients are modified using proposed mask for its domain then the enhanced image is reconstructed using inverse transform. The discrete cosine transform outperforms with better image quality and highest PSNR value. We compare this approach with enhancement based on the discrete wavelet transform.

Author Keywords: Discrete cosine transform, Discrete wavelet transform.


How to Cite this Article


Nivedita V. Deshmukh Hippalgaonkar and Dr. Mrs. S.D. Apte, “Contrast Enhancement of Gray Image using proposed mask in Discrete Cosine Transform Domain,” International Journal of Innovation and Applied Studies, vol. 9, no. 4, pp. 1459–1464, December 2014.