November 21, 2014 10:49 WSPC/INSTRUCTION FILE ws-ijig International Journal of Image and Graphics c World Scientific Publishing Company Improving Graph-Based Image Segmentation using Non-Linear Color Similarity Metrics Carvalho, L.E. Graduate Program in Computer Science Federal University of Santa Catarina, Image Processing and Computer Graphics Lab, National Brazilian Institute for Digital Convergence, Federal University of Santa Catarina, Brazil lcarvalho@incod.ufsc.br Mantelli Neto, S. L Brazilian Institute for Space Research - INPE, Image Processing and Computer Graphics Lab, National Brazilian Institute for Digital Convergence, Federal University of Santa Catarina, Brazil sylvio@incod.ufsc.br von Wangenheim, A. Image Processing and Computer Graphics Lab, National Brazilian Institute for Digital Convergence, Federal University of Santa Catarina, Brazil awangenh@inf.ufsc.br Sobieranski, A.C. 4Vision Lab - University of Itajai Valley, Federal University of Parana Department of informatics, Image Processing and Computer Graphics Lab, National Brazilian Institute for Digital Convergence, Federal University of Santa Catarina, Brazil asobieranski@incod.ufsc.br Comunello, E. 4Vision Lab - University of Itajai Valley; Image Processing and Computer Graphics Lab, National Brazilian Institute for Digital Convergence, Federal University of Santa Catarina, Brazil eros@incod.ufsc.br TEL: ++554837219516 r.17 Received (Day Month Year) Revised (Day Month Year) Accepted (Day Month Year) 1