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JOIG 2023 Vol.11(2): 146-152
doi: 10.18178/joig.11.2.146-152

Fuzzy Image Enhancement Based on an Adjustable Intensifier Operator

Libao Yang 1,2, Suzelawati Zenian 1,*, and Rozaimi Zakaria1
1. Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Kota Kinabalu, Malaysia;
Email: yanglibao9798@gmail.com (L.Y.)
2. School of Mathematics and Information Technology, Xingtai University, Xingtai, China
*Correspondence: suzela@ums.edu.my (S.Z.)

Manuscript received July 1, 2022; revised August 12, 2022; accepted November 11, 2022.

Abstract—Fuzzy image enhancement is an important method in the process of image processing. Fuzzy image enhancement includes steps: gray-level fuzzification, modifying membership using intensifier (INT) operator, and obtaining new gray-levels by defuzzification. This paper proposed an adjustable INT operator with parameter k. Firstly, the image’s pixels are divided into two regions by the OTSU method (low and high region), and calculate the pixels’ membership by fuzzification in each region. Then, the INT operator reduce pixels’ membership in the low region and enlarge pixels’ membership in the high region. The parameter k is determined base on the pixel’s location information (neighborhood information), and plays an adjusting role when the INT operator is working. And finally, the result image is obtained by the defuzzification process. In the experiment results, the fuzzy image enhancement with the adjustable intensifier operator achieves a better performance.

Keywords—fuzzy image enhancement, intensifier operator, gradient, threshold

Cite: Libao Yang, Suzelawati Zenian, and Rozaimi Zakaria, "Fuzzy Image Enhancement Based on an Adjustable Intensifier Operator," Journal of Image and Graphics, Vol. 11, No. 2, pp. 146-152, June 2023.

Copyright © 2023 by the authors. This is an open access article distributed under the Creative Commons Attribution License (CC BY-NC-ND 4.0), which permits use, distribution and reproduction in any medium, provided that the article is properly cited, the use is non-commercial and no modifications or adaptations are made.