Enhancing Thorax Images Using Fuzzy Logic Based Techniques
DOI:
https://doi.org/10.37034/medinftech.v4i1.46Keywords:
Edge Detection, Fuzzy Logic, Image Enhancement, Medical Image Processing, Thoracic X-ray ImageAbstract
Enhancing the quality of thoracic X-ray images is crucial for accurate medical diagnosis; however, conventional enhancement methods often struggle to reduce noise while preserving important edge structures and anatomical details. This study proposes a hybrid image enhancement framework that integrates median neighborhood filtering, convolution processing, fuzzy logic-based edge detection, and morphological operations to improve image clarity and structural definition. The proposed pipeline begins with median neighborhood filtering to reduce noise while preserving essential image structures. The filtered image is then processed using convolution to enhance feature representation and prepare the data for edge detection. Subsequently, fuzzy logic-based edge detection is applied to handle intensity variations and uncertainty, enabling adaptive detection of faint and overlapping edges. Finally, morphological operations are used to refine edge continuity and remove small artifacts, resulting in clearer anatomical boundaries. Experimental results demonstrate that the proposed method effectively reduces noise while maintaining structural integrity, as indicated by stable pixel value transformations after filtering and improved edge clarity in visual comparisons. The method shows better performance in preserving continuous edge structures and detecting subtle thoracic features compared to conventional approaches. In conclusion, the integration of median filtering, convolution processing, fuzzy logic-based edge detection, and morphological refinement provides an effective framework for enhancing thoracic medical images and supports more reliable interpretation in medical imaging applications.
Downloads
References
R. C. Gonzalez and P. Wintz, Digital Image Processing, 2nd ed. United States of America: Addison-Wesley, 1987. [Online]. Available: https://archive.org/details/digitalimageproc0002gonz/page/n7/mode/2up
S. Addimulam et al., “Deep Learning-Enhanced Image Segmentation for Medical Diagnostics,” Malaysian J. Med. Biol. Res., vol. 7, no. 2, pp. 145–152, 2020.
B. Kanchanadevi and P. R. Tamilselvi, “PREPROCESSING USING IMAGE FILTERING METHOD AND TECHNIQUES FOR MEDICAL IMAGE COMPRESSION TECHNIQUES We begin with the Partial Differential Equation :,” ICTACT J. Image Video Process., vol. 10, no. 3, pp. 2132–2135, 2020, doi: 10.21917/ijivp.2020.0304.
D. Kumar, R. C. Pandey, and A. K. Mishra, “A review of image features extraction techniques and their applications in image forensic,” Multimed. Tools Appl., vol. 83, no. 40, pp. 87801–87902, 2024, doi: 10.1007/s11042-023-17950-x.
J. Kaur and W. Singh, “Tools, techniques, datasets and application areas for object detection in an image: a review,” Multimed. Tools Appl., vol. 81, no. 27, pp. 38297–38351, 2022, doi: 10.1007/s11042-022-13153-y.
G. Gupta and R. Chandel, “Image Filtering Algorithms and Techniques: A Review,” Int. J. Adv. Res. Comput. Sci. Softw. Eng., vol. 3, no. 10, pp. 198–202, 2013.
N. Kumar and M. Nachamai, “Noise Removal and Filtering Techniques Used in Medical Images,” Orient. J. Comput. Sci. Technol., vol. 10, no. 1, pp. 103–113, 2017, doi: 10.13005/ojcst/10.01.14.
B. Desai, U. Kushwaha, and S. Jha, “Image Filtering - Techniques , Algorithm and Applications,” Appl. GIS, vol. 7, no. 11, pp. 970–975, 2020.
H. M. Ali, “MRI Medical Image Denoising by Fundamental Filters,” in High-Resolution Neuroimaging - Basic Physical Principles and Clinical Applications, A. M. Halefoğlu, Ed., London: IntechOpen, 2018. doi: 10.5772/intechopen.72427.
F. Orujov, R. Maskeliūnas, R. Damaševičius, and W. Wei, “Fuzzy based image edge detection algorithm for blood vessel detection in retinal images,” Appl. Soft Comput., vol. 94, p. 106452, 2020, doi: https://doi.org/10.1016/j.asoc.2020.106452.
M. Versaci and F. C. Morabito, “Image Edge Detection: A New Approach Based on Fuzzy Entropy and Fuzzy Divergence,” Int. J. Fuzzy Syst., vol. 23, no. 4, pp. 918–936, 2021, doi: 10.1007/s40815-020-01030-5.
H. A. Rasool, W. S. Hadi, M. Kurdi, A. Hamza, and Al-fatlawi, “Implementation of Image Processing Gray Scale Image for Edge Detection Algorithm based on Fuzzy Logic Theory,” Webology, 2022, [Online]. Available: https://api.semanticscholar.org/CorpusID:247137799
I. Haq, S. Anwar, K. Shah, M. T. Khan, and S. A. Shah, “Fuzzy Logic Based Edge Detection in Smooth and Noisy Clinical Images.,” PLoS One, vol. 10, no. 9, p. e0138712, 2015, doi: 10.1371/journal.pone.0138712.
C.-Y. Tyan and P. P. Wang, “Image processing-enhancement, filtering and edge detection using the fuzzy logic approach,” in [Proceedings 1993] Second IEEE International Conference on Fuzzy Systems, 1993, pp. 600–605 vol.1. doi: 10.1109/FUZZY.1993.327420.
A. Alawad, F. Rahman, O. Khalifa, and N. Abdul Malek, “Fuzzy Logic based Edge Detection Method for Image Processing,” Int. J. Electr. Comput. Eng., vol. 8, pp. 1863–1869, 2018, doi: 10.11591/ijece.v8i3.pp1863-1869.
E. M. Kaur and M. S. Kaur, “A NEW APPROACH TO EDGE DETECTION USING RULE BASED FUZZY LOGIC,” J. Glob. Res. Comput. Sci., vol. 2, no. 9, pp. 15–19, 2011, [Online]. Available: https://www.academia.edu/78392832/A_New_Approach_to_Edge_Detection_Using_Rule_Based_Fuzzy_Logic
D. Bhonsle, V. Chandra, and G. R. Sinha, “Medical Image Denoising Using Bilateral Filter,” Int. J. Image, Graph. Signal Process., vol. 4, no. 6, pp. 36–43, 2012, doi: 10.5815/ijigsp.2012.06.06.
P. V Deepa and M. Suganthi, “Performance Evaluation of Various Denoising Filters for Medical Image,” 2014. [Online]. Available: https://api.semanticscholar.org/CorpusID:16642484
S. Ahmed and S. Islam, “Methods in detection of median filtering in digital images: a survey,” Multimed. Tools Appl., vol. 82, no. 28, pp. 43945–43965, 2023, doi: 10.1007/s11042-023-14835-x.
M. Abo-zahhad, R. R. Gharieb, and S. M. Ahmed, “Edge Detection with a Preprocessing Approach,” J. Signal Inf. Process., vol. 5, no. November, pp. 123–134, 2014, doi: 10.4236/jsip.2014.54015.
A. Agrawal, A. Choubey, and K. K. Nagwanshi, “Development of adaptive fuzzy based Image Filtering techniques for efficient Noise Reduction in Medical Images,” 2011. [Online]. Available: https://api.semanticscholar.org/CorpusID:16281260
M. Nixon and A. S. Aguado, Feature Extraction and Image Processing for Computer Vision. Academic Press, 2025. [Online]. Available: https://books.google.co.id/books?id=WkUyEQAAQBAJ
S. Raheja and A. Kumar, “Edge detection based on type-1 fuzzy logic and guided smoothening,” Evol. Syst., vol. 12, pp. 447–462, 2021, doi: 10.1007/s12530-019-09304-6.
L. A. Zadeh and R. A. Aliev, Fuzzy Logic Theory And Applications: Part I And Part Ii. World Scientific Publishing Company, 2018. [Online]. Available: https://books.google.co.id/books?id=2PF9DwAAQBAJ
C.-B. Cheng, “Group opinion aggregationbased on a grading process: A method for constructing triangular fuzzy numbers,” Comput. Math. with Appl., vol. 48, no. 10, pp. 1619–1632, 2004, doi: https://doi.org/10.1016/j.camwa.2004.03.008.
A. Alshennawy and A. Aly, “Edge Detection in digital images using Fuzzy logic technique,” World Acad. Sci. Eng. Technol., vol. 39, pp. 179–186, 2009.
L. Pinto-Coelho, “How Artificial Intelligence Is Shaping Medical Imaging Technology : A Survey of Innovations and Applications,” Bioeng. Rev., vol. 10, no. 12, pp. 1–21, 2023, doi: 10.3390/bioengineering10121435.
M. Hu, Y. Zhong, S. Xie, H. Lv, and Z. Lv, “Fuzzy System Based Medical Image Processing for Brain Disease Prediction.,” Front. Neurosci., vol. 15, p. 714318, 2021, doi: 10.3389/fnins.2021.714318.







