{"id":14975,"date":"2020-02-21T11:10:29","date_gmt":"2020-02-21T05:40:29","guid":{"rendered":"https:\/\/iihs.co.in\/knowledge-gateway\/?p=14975"},"modified":"2023-04-20T11:30:02","modified_gmt":"2023-04-20T06:00:02","slug":"coupled-pde-for-ultrasound-despeckling-using-eni-classification","status":"publish","type":"post","link":"https:\/\/iihs.co.in\/knowledge-gateway\/coupled-pde-for-ultrasound-despeckling-using-eni-classification\/","title":{"rendered":"Coupled PDE for Ultrasound Despeckling Using ENI Classification"},"content":{"rendered":"<div id='full_slider_1'  class='avia-fullwidth-slider main_color avia-shadow   avia-builder-el-0  el_before_av_layout_row  avia-builder-el-first   container_wrap sidebar_right'  ><div  class='avia-slideshow av-59mt2f3-e14eaf8ac64a7e3066b60620b9d786a9 avia-slideshow-featured av_slideshow_full avia-fade-slider av-slideshow-ui av-control-hidden av-no-slider-navigation av-hide-nav-arrows av-slideshow-manual av-loop-once av-loop-manual-endless 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class='flex_cell_inner'><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-eceb46c1630995a1a92029a2a08546cf\">\n#top .av-special-heading.av-av_heading-eceb46c1630995a1a92029a2a08546cf{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-av_heading-eceb46c1630995a1a92029a2a08546cf .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-eceb46c1630995a1a92029a2a08546cf .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-eceb46c1630995a1a92029a2a08546cf av-special-heading-h3  avia-builder-el-5  el_before_av_textblock  avia-builder-el-first '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >Coupled PDE for Ultrasound Despeckling Using ENI Classification<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-k6vqs3o9-7fe320ea3f86a16b878b001285ec35c5 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><span style=\"font-size: 13px; text-transform: none; color: #8a0000;\"><em>R. Soorajkumar, P. Krishnakumar, D. Girish, Jeny Rajan <\/em>| 2016<\/span><\/p>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-k6vqu3w5-286a2b6e332333602232192a91a99eb3 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p class=\"p4\">Abstract<\/p>\n<p>Speckle is a type of noise which is often present in ultrasound images. Speckle is formed due to constructive or destructive interference of ultrasound waves. Due to the granular pattern of speckle noise, it hides important details in ultrasound images. Many despeckling techniques are proposed in the literature, but most of them fail to reach a balance between the removal of speckle noise and preservation of the fine details in the image. In this work, an improved coupled PDE model is proposed which combines second order selective degenerate diffusion (SDD) model and fourth order PDE model based on the assumption that speckle in ultrasound image follows Gamma distribution. An edge noise interior (ENI) method is used to control the diffusion. With the help of ENI controlling function, the diffusion at edge pixels and noisy pixels are selectively accomplished with varying speed. Thus, the proposed model preserves the edges and fine texture details in the image. The model is tested on simulated images after corrupting the images with various levels of Gamma noise. Further, we have tested it on real ultrasound images also. The performance of the proposed model is compared with other similar techniques and the proposed method outperforms other state-of-the-art methods, both in terms of qualitative and quantitative measures.<\/p>\n<p class=\"p4\">\n<p class=\"p4\">\n<\/div><\/section><br \/>\n<div  class='avia-button-wrap av-k6vqum9q-dd87eac11ade562dc1766621f600020e-wrap avia-button-left  avia-builder-el-8  el_after_av_textblock  el_before_av_hr '><a href='https:\/\/www.sciencedirect.com\/science\/article\/pii\/S1877050916310961'  class='avia-button av-k6vqum9q-dd87eac11ade562dc1766621f600020e av-link-btn avia-icon_select-yes-left-icon avia-size-medium avia-position-left avia-color-theme-color'  target=\"_blank\"  rel=\"noopener noreferrer\"  aria-label=\"Access Paper\"><span class='avia_button_icon avia_button_icon_left avia-iconfont avia-font-entypo-fontello' data-av_icon='\ue82d' data-av_iconfont='entypo-fontello' ><\/span><span class='avia_iconbox_title' >Access Paper<\/span><\/a><\/div><br 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href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/data-and-metrics\/\" class=\"tag-cloud-link tag-link-103 tag-link-position-12\" style=\"font-size: 18.347826086957pt;\" aria-label=\"Data and Metrics (30 items)\">Data and Metrics<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/design\/\" class=\"tag-cloud-link tag-link-145 tag-link-position-13\" style=\"font-size: 11.478260869565pt;\" aria-label=\"Design (4 items)\">Design<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/economic-development\/\" class=\"tag-cloud-link tag-link-99 tag-link-position-14\" style=\"font-size: 18.95652173913pt;\" aria-label=\"Economic Development (35 items)\">Economic Development<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/ecosystem\/\" class=\"tag-cloud-link tag-link-152 tag-link-position-15\" style=\"font-size: 15.826086956522pt;\" aria-label=\"Ecosystem (15 items)\">Ecosystem<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/energy\/\" class=\"tag-cloud-link tag-link-160 tag-link-position-16\" style=\"font-size: 12.173913043478pt;\" aria-label=\"Energy (5 items)\">Energy<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/environment-and-climate\/\" class=\"tag-cloud-link tag-link-104 tag-link-position-17\" style=\"font-size: 22pt;\" aria-label=\"Environment and Climate (80 items)\">Environment and Climate<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/equity\/\" class=\"tag-cloud-link tag-link-94 tag-link-position-18\" style=\"font-size: 10.608695652174pt;\" aria-label=\"Equity (3 items)\">Equity<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/gender\/\" class=\"tag-cloud-link tag-link-110 tag-link-position-19\" style=\"font-size: 12.173913043478pt;\" aria-label=\"Gender (5 items)\">Gender<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/governance\/\" class=\"tag-cloud-link tag-link-102 tag-link-position-20\" style=\"font-size: 18pt;\" aria-label=\"Governance (27 items)\">Governance<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/health\/\" class=\"tag-cloud-link tag-link-151 tag-link-position-21\" style=\"font-size: 10.608695652174pt;\" aria-label=\"Health (3 items)\">Health<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/housing\/\" class=\"tag-cloud-link tag-link-13 tag-link-position-22\" style=\"font-size: 18pt;\" aria-label=\"Housing (27 items)\">Housing<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/human-development\/\" class=\"tag-cloud-link tag-link-100 tag-link-position-23\" style=\"font-size: 15.652173913043pt;\" aria-label=\"Human Development (14 items)\">Human Development<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/illness-narratives\/\" class=\"tag-cloud-link tag-link-210 tag-link-position-24\" style=\"font-size: 8pt;\" aria-label=\"Illness narratives (1 item)\">Illness narratives<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/industrial-policy\/\" class=\"tag-cloud-link tag-link-80 tag-link-position-25\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Industrial Policy (2 items)\">Industrial Policy<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/instructional-design\/\" class=\"tag-cloud-link tag-link-150 tag-link-position-26\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Instructional Design (2 items)\">Instructional Design<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/ipcc\/\" class=\"tag-cloud-link tag-link-126 tag-link-position-27\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"IPCC (2 items)\">IPCC<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/knowledge\/\" class=\"tag-cloud-link tag-link-143 tag-link-position-28\" style=\"font-size: 10.608695652174pt;\" aria-label=\"Knowledge (3 items)\">Knowledge<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/land\/\" class=\"tag-cloud-link tag-link-108 tag-link-position-29\" style=\"font-size: 19.652173913043pt;\" aria-label=\"Land (43 items)\">Land<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/medical-diversity\/\" class=\"tag-cloud-link tag-link-208 tag-link-position-30\" style=\"font-size: 8pt;\" aria-label=\"Medical diversity (1 item)\">Medical diversity<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/migration\/\" class=\"tag-cloud-link tag-link-234 tag-link-position-31\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"migration (2 items)\">migration<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/non-economic-loss\/\" class=\"tag-cloud-link tag-link-194 tag-link-position-32\" style=\"font-size: 8pt;\" aria-label=\"Non-Economic Loss (1 item)\">Non-Economic Loss<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/planning\/\" class=\"tag-cloud-link tag-link-106 tag-link-position-33\" style=\"font-size: 17.565217391304pt;\" aria-label=\"Planning (24 items)\">Planning<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/pluralism\/\" class=\"tag-cloud-link tag-link-209 tag-link-position-34\" style=\"font-size: 8pt;\" aria-label=\"Pluralism (1 item)\">Pluralism<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/policies\/\" class=\"tag-cloud-link tag-link-146 tag-link-position-35\" style=\"font-size: 10.608695652174pt;\" aria-label=\"Policies (3 items)\">Policies<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/poverty-and-inequality\/\" class=\"tag-cloud-link tag-link-101 tag-link-position-36\" style=\"font-size: 17.391304347826pt;\" aria-label=\"Poverty and Inequality (23 items)\">Poverty and Inequality<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/risk\/\" class=\"tag-cloud-link tag-link-97 tag-link-position-37\" style=\"font-size: 16.521739130435pt;\" aria-label=\"Risk (18 items)\">Risk<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/sanitation\/\" class=\"tag-cloud-link tag-link-67 tag-link-position-38\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Sanitation (2 items)\">Sanitation<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/scholarly-publishing\/\" class=\"tag-cloud-link tag-link-130 tag-link-position-39\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Scholarly Publishing (2 items)\">Scholarly Publishing<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/science-gaps\/\" class=\"tag-cloud-link tag-link-193 tag-link-position-40\" style=\"font-size: 8pt;\" aria-label=\"Science Gaps (1 item)\">Science Gaps<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/sustainability\/\" class=\"tag-cloud-link tag-link-93 tag-link-position-41\" style=\"font-size: 12.782608695652pt;\" aria-label=\"Sustainability (6 items)\">Sustainability<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/training-manual\/\" class=\"tag-cloud-link tag-link-242 tag-link-position-42\" style=\"font-size: 10.608695652174pt;\" aria-label=\"Training manual (3 items)\">Training manual<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/transport\/\" class=\"tag-cloud-link tag-link-95 tag-link-position-43\" style=\"font-size: 12.173913043478pt;\" aria-label=\"Transport (5 items)\">Transport<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/urbanisation\/\" class=\"tag-cloud-link tag-link-88 tag-link-position-44\" style=\"font-size: 12.782608695652pt;\" aria-label=\"Urbanisation (6 items)\">Urbanisation<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/water-and-sanitation\/\" class=\"tag-cloud-link tag-link-96 tag-link-position-45\" style=\"font-size: 18.086956521739pt;\" aria-label=\"Water and Sanitation (28 items)\">Water and Sanitation<\/a><\/div>\n<\/div><\/div><\/p>\n<\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p><em>R. Soorajkumar, P. Krishnakumar, D. Girish, Jeny Rajan<\/em><\/p>\n<hr\/>\n","protected":false},"author":2,"featured_media":11834,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[71],"tags":[],"class_list":["post-14975","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper"],"_links":{"self":[{"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/posts\/14975","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/comments?post=14975"}],"version-history":[{"count":1,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/posts\/14975\/revisions"}],"predecessor-version":[{"id":19410,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/posts\/14975\/revisions\/19410"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/media\/11834"}],"wp:attachment":[{"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/media?parent=14975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/categories?post=14975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/tags?post=14975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}