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Results show that the Particle Swarm Optimization (PSO) algorithm converges satisfactorily to the selection of the region that is most similar to the central region of the weld on the optimization and decision steps (to balance the weights of the classifier). The scientific contribution of this research is the improvement of the method applied in the search of candidate regions through ellipses' attributes analysis.<\/p>","DOI":"10.4018\/ijncr.2015010103","type":"journal-article","created":{"date-parts":[[2015,3,11]],"date-time":"2015-03-11T08:33:28Z","timestamp":1426062808000},"page":"42-56","source":"Crossref","is-referenced-by-count":2,"title":["Detecting Central Region in Weld Beads of DWDI Radiographic Images Using PSO"],"prefix":"10.4018","volume":"5","author":[{"given":"Fernando M.","family":"Suyama","sequence":"first","affiliation":[{"name":"Federal University of Technology, Paran\u00e1, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andriy G.","family":"Krefer","sequence":"additional","affiliation":[{"name":"Federal University of Technology, Paran\u00e1, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alex R.","family":"Faria","sequence":"additional","affiliation":[{"name":"Federal University of Technology, Paran\u00e1, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tania M.","family":"Centeno","sequence":"additional","affiliation":[{"name":"Federal University of Technology, Paran\u00e1, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2432","reference":[{"issue":"11","key":"ijncr.2015010103-0","first-page":"1142","article-title":"Segmentation of Welding Defects Using a Robust Algorithm.","volume":"62","author":"M. 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