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Reseach Article

Colour Contrast Enhancement Method by Scaling the DC Coefficients in CIE-LAB Colour Space

by Anzar Alam, Mohd. Abdullah, Ravi Shankar Mishra
International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 97 - Number 22
Year of Publication: 2014
Authors: Anzar Alam, Mohd. Abdullah, Ravi Shankar Mishra
10.5120/17136-7371

Anzar Alam, Mohd. Abdullah, Ravi Shankar Mishra . Colour Contrast Enhancement Method by Scaling the DC Coefficients in CIE-LAB Colour Space. International Journal of Computer Applications. 97, 22 ( July 2014), 1-6. DOI=10.5120/17136-7371

@article{ 10.5120/17136-7371,
author = { Anzar Alam, Mohd. Abdullah, Ravi Shankar Mishra },
title = { Colour Contrast Enhancement Method by Scaling the DC Coefficients in CIE-LAB Colour Space },
journal = { International Journal of Computer Applications },
issue_date = { July 2014 },
volume = { 97 },
number = { 22 },
month = { July },
year = { 2014 },
issn = { 0975-8887 },
pages = { 1-6 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume97/number22/17136-7371/ },
doi = { 10.5120/17136-7371 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T22:24:46.777412+05:30
%A Anzar Alam
%A Mohd. Abdullah
%A Ravi Shankar Mishra
%T Colour Contrast Enhancement Method by Scaling the DC Coefficients in CIE-LAB Colour Space
%J International Journal of Computer Applications
%@ 0975-8887
%V 97
%N 22
%P 1-6
%D 2014
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Colour and brightness of the captured images from low cost digital cameras are usually different from the colour and brightness of the original scene. Many factors are responsible for the low contrast images such as non uniform illumination, large or small exposure of some specific regions, and the unwanted movements of camera users. Due to these reasons the captured image to looks annoying to human visual system. Thus, contrast enhancement methods are required for improving the visual appearance of the colour images. In this paper the performance of contrast limited adaptive histogram equalization (CLAHE) method is compared with method of DC coefficient scaling in the compressed DCT domain for enhancing the contrast of colour images. In addition, as a modification DC coefficient scaling is also implemented in the CIE-Lab colour space. The contrast is only enhanced in L component and keeping the colour information preserved. This improves the entropy of standard method. For comparing the performance along with SNR and entropy the absolute standard deviation difference is also used as parameters. The methods are tested on various true colour images from different environment.

References
  1. Jayanta M. , and Sanjit K. Mitra, "Enhancement of Colour Images by Scaling the DCT Coefficients", IEEE Transactions on Image Processing, Vol. 17, No. 10, pp. 1783-1794, 2008
  2. Prateek S. Sengar, Tarun K. Rawat, Harish Parthasarathy, "Colour Image Enhancement by Scaling the Discrete Wavelet Transform.
  3. Prateek S. Sengar, Tarun K. Rawat, Harish Parthasarathy, "Colour Image Enhancement by Scaling the Discrete Wavelet Transform Coefficients", IEEE International Conference on Microelectronics, Communication and Renewable Energy (ICMiCR), 2013
  4. Irene Fondon, Mark J. J. P. van Grinsven, Clara I. Sanchez, Aurora Saez, "Perceptually Adapted Method for Optic Disc Detection on Retinal Fundus Images", Proc. of IEEE international conference pp. 279-284, CBMS 2013.
  5. Vasile V. Buzuloiu, Mihai Ciuc, Rangaraj M. Rangayan, Loic Kil, Constantin Vertan, "Histogram equalization of colour images using the adaptive neighborhood approach", Proc. SPIE 3646, Nonlinear Image Processing X, 330, 1999.
  6. K. Zuiderveld, "Contrast Limited Adaptive Histogram Equalization", Graphics Gems IV, pp. 474-485 1998
  7. P. E. Trahanias, & A. N. Venetsanopoulos, Colour image enhancement through 3-D histogram equalization, Proc. 11th IAPR Conf. on Pattern Recognition, The Hague, Netherlands, pp. 545-548, 1992.
  8. B. A. Thomas, R. N. Strickland, & J. J. Rodriguez, "Colour image enhancement using spatially adaptive saturation feedback", Proc. 4th IEEE Conf. on Image Processing, Santa Barbara, CA, USA, pp. 30-33, 1997
  9. Etta D, Pisano, S. Zong, R. E Jhonston "Contrast limited adaptive histogram equalization image processing to improve the detection of simulated speculation in Dense Monograms", Journal of Digital Imaging, vol. 11, No. 4, pp 193-200, 1998",
  10. . Gonzalez, RC, Woods, RE & Eddins,2004, Digital Image processing using MATLAB, Prentice Hall. .
  11. Agung W. Setiawan, Tati R. Mengko, Oerip S. Santoso, Andriyan B. Suksmono, "Colour retinal image enhancement using CLAHE", Proc. of 2013 International Conference on ICT for Smart Society (ICISS), pp. 1-3, 2013
  12. A. Saradha Devi, S. Suja Priyadharsini, S. Athinarayanan, "A Block based Scheme for Enhancing Low Luminated Images", International journal of Multimedia & Its Applications (IJMA) Vol. 2, No. 3, pp. 49-61, 2010.
  13. . Narasimhan K, Sudarshan C R, N. Raju, "A Comparison of Contrast Enhancement Techniques in Poor Illuminated Gray Level and Colour Images", International Journal of Computer Application s0975 – 8887) Vol. 25, No . 2, pp. 17-25, 2011.
  14. . K. K. Sharma, Supriya M. ," Colour Image Enhancement using Nonlinear Mapping in Colour and Transform Domains", International Journal of Advanced Electronics & Communication Systems, Is2 Vol. 1 2012.
  15. Michal Recky, Franz Leberl, "Windows detection using K-means in CIE-LAB color space", IEEE International Conference on Pattern Recognition, pp. 356-359, 2010
  16. Adrian Ciobanu, Tudor Barbu "A novel Iris clustering approach using LAB color features", Proc. of IEEE 4th International Symposium on Electrical and Electronics Engineering (ISEEE), pp. 1-4, 2013.
Index Terms

Computer Science
Information Sciences

Keywords

Contrast enhancement Lab colour spaces Contrast limited Adaptive Histogram Equalization Discrete Cosine Transform Entropy.