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DPSO-FOHA I and DPSO-FOHA II algorithms, based on multilevel thresholding are proposed in this paper. Optimal multilevel thresholds for colored images are maximized by using Otsu's between class variance functions. The Darwinian principle has been used to improve the value of fitness function along with the concept of fractional calculus, which optimizes it in lesser number of search iterations. Comparative...
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