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Issue title: Special Section: Ambient advancements in intelligent computational sciences
Guest editors: Shailesh Tiwari, Munesh Trivedi and Mohan L. Kohle
Article type: Research Article
Authors: Gupta, Ranua; * | Pachauri, Rahulb | Singh, Ashutoshc
Affiliations: [a] Department of Electronics and Communication, Jaypee University of Engineering and Technology, Raghogarh, Guna (M.P.), India | [b] Department of Computer Science, Jaypee University of Engineering and Technology, Raghogarh, Guna (M.P.), India | [c] Department of Electronics and Communication, Thapar Institute of Engineering and Technology University, Patiala, India
Correspondence: [*] Corresponding author. Ranu Gupta, Department of Electronics and Communication, Jaypee University of Engineering and Technology, Raghogarh, Guna (M.P.), 473226, India. E-mail: [email protected].
Abstract: A linear method based on local statistical parameters of the image to remove the speckles of ultrasound carotid artery medical image is presented in this article. Speckle is the main drawback of medical images and it should be removed before any further processing of images like edge detection and registration. The focus of this article is to filter the speckle efficiently and effectively even at higher density of noise. The filter is designed by keeping in mind that the local statistical parameters are important rather than global statistical parameters. The weighting factor is designed such that it is high for similar areas and thus results into more smoothing without destroying the useful information, whereas it is low at the edges and thus less smoothing will be done. The filter is applied with the help of 5×5 sliding window. The noise ranging from 0.01–0.09 of variance is unnaturally inserted in the medical images through Matlab. The efficiency calculating parameters like Signal to Noise Ratio (SNR), Quality Index (Q), Mean Square Error (MSE), Similarity Index Measure (SSIM) and Edge Preserved Index (EPI) were used to evaluate the proposed technique. The suggested method is also compared with the existing local statistical mean variance filter for the said parameters in order to analyse the performance of the filter.
Keywords: Medical images, ultrasound, speckle, local statistics
DOI: 10.3233/JIFS-169715
Journal: Journal of Intelligent & Fuzzy Systems, vol. 35, no. 2, pp. 1807-1816, 2018
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