A comparative Study of Image Enhancement Techniques for Natural Images

  • Ahmed Naser Ismael College of Adminstration and Economic, University of Basrah, Iraq
Keywords: Image Enhancement Techniques, CLAHE, DSIHE, RDSIHE, Structural Similarity Index Matrix, PSNR


Enhancement is most interesting parts in image processing field. It uses to enhance the structural appearance for picture without the degradation in the original input image. The enhancement techniques become the important key and simply extraction features by removing noise and another items inside an image.  Several enhancement techniques have achieved with different and inaccurate results.  The aim of this paper, the nature images quality was improved by the many enhancement techniques like of Histogram Equalization (HE), Local Histogram Equalization (LHE), Adaptive Histogram Equalization (AHE), Contrast Limited Adaptive Histogram Equalization (CLAHE), Brightness Preserving Bi-Histogram Equalization (BBHE), Dualistic Sub-Image Histogram Equalization (DSIHE) and Recursive sub-image histogram equalization (RSIHE).  In evaluation step, the performance of all these techniques are examined by values measurements of SSIM (Structural Similarity Index Matrix), Entropy, Peak Signal-to-Noise Ratio (PSNR) and Signal to Noise Ratio (SNR).  The comparisons of the better existing results are given because to explain the best possible technique that can be used as suitable image enhancement. The results of the enhanced of 15 nature images have showed DSIHE technique has a batter a values of SSIM and Entropy with 0.9885 and 59975 respectively. Overall, based on the PSNR and SNR values, the CLAHE technique are recorded values higher than of other six techniques in 21.2952 and 192932 values.


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How to Cite
Ismael, A. (2022). A comparative Study of Image Enhancement Techniques for Natural Images. Journal of Al-Qadisiyah for Computer Science and Mathematics, 14(4), Comp Page 53-65. https://doi.org/10.29304/jqcm.2022.14.4.1086
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