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Fuzzy Gray Level Difference Histogram Equalization for Medical Image Enhancement

  • Image & Signal Processing
  • Published:
Journal of Medical Systems Aims and scope Submit manuscript

Abstract

Contrast enhancement methods are used to reduce image noise and increase the contrast of structures of interest. In medical images where the distinction between normal and abnormal tissue is subtle, accurate interpretation may become difficult if noise levels are relatively high. To provide accurate interpretation and clearer image for the observer with reduced noise levels “a novel adaptive fuzzy gray level difference histogram equalization algorithm” is proposed. At first, gray level difference of an input image is calculated using the binary similar patterns. Then, the gray level differences are fuzzified in order to deal the uncertainties present in the input image. Following the fuzzification, fuzzy gray level difference clip limit is computed to control the insignificant contrast enhancement. Finally, a fuzzy clipped histogram is equalized to obtain the contrast-enhanced MR medical image. The proposed algorithm is analysed both visually and analytically to calculate its performance against the other existing algorithms. Visual and analytical results on various test images affirm that the proposed algorithm outperforms all other existing algorithms and provide a clear path to analyse the fine details and infected portions effectively.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, PSNA College of Engineering and Technology, Dindigul, Tamilnadu, 624622, India

    Bharath Subramani & Magudeeswaran Veluchamy

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  1. Bharath Subramani
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  2. Magudeeswaran Veluchamy
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Correspondence to Bharath Subramani.

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Subramani, B., Veluchamy, M. Fuzzy Gray Level Difference Histogram Equalization for Medical Image Enhancement. J Med Syst 44, 103 (2020). https://doi.org/10.1007/s10916-020-01568-9

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  • DOI: https://doi.org/10.1007/s10916-020-01568-9

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