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Robust Multi-thresholding in Noisy Grayscale Images Using Otsu’s Function and Harmony Search Optimization Algorithm

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Advances in Electronics, Communication and Computing

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 443))

Abstract

Multilevel segmentation in images clusters pixels depends on the total thresholds and intensity values. To find optimal thresholds and to maximize the objective function, entails a lot of computational power and memory. In this work gray-level segmentation is proposed by Otsu-based Harmonic Search Optimization Algorithm (HSOA) algorithm to resolve such drawbacks . The HS algorithm is employed to explore the optimum values of threshold by Otsu’s maximization objective function. Its effectiveness based on HS technique has been applied on 5 standard images with a size of 512 × 512. The images are associated with Gaussian (GN) and Salt-and-Pepper (SAP) noise. The measureable examination is performed with the parameters of between-class variance (Objective Function) value and quality measures, such as Root Mean Square Error (RMSE) and Peak Signal-to-Noise Ratio (PSNR). The experimental procedure is employed with MATLAB software. Experimental outcomes of Otsu-based harmony search offers an optimal solution to multilevel thresholding problem for the GN and SAP noise applied images with improved objective function and faster convergence.

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Correspondence to K. Suresh .

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Suresh, K., Sakthi, U. (2018). Robust Multi-thresholding in Noisy Grayscale Images Using Otsu’s Function and Harmony Search Optimization Algorithm. In: Kalam, A., Das, S., Sharma, K. (eds) Advances in Electronics, Communication and Computing. Lecture Notes in Electrical Engineering, vol 443. Springer, Singapore. https://doi.org/10.1007/978-981-10-4765-7_52

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  • DOI: https://doi.org/10.1007/978-981-10-4765-7_52

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  • Print ISBN: 978-981-10-4764-0

  • Online ISBN: 978-981-10-4765-7

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