@techreport{TR-IC-17-09, number = {IC-17-09}, author = {Pedro M. Moura and Nelson L. S. da Fonseca}, title = {Inscribed Rectangles Algorithm for Routing, Core and Spectrum Assignment for SDM Optical Networks}, month = {June}, year = {2017}, institution = {Institute of Computing, University of Campinas}, note = {In English, 13 pages. \par\selectlanguage{brazil}\textbf{Resumo} This technical report proposes a Routing, Core and Spectrum Assignment (RCSA) algorithm based on image processing Inscribed rectangle algorithm. The solution aims at discovering portions of spectrum capable of accommodating requests with low computational complexity. Advanced fitting policies are proposed to chose which portion of the spectrum to reduce of blocking and crosstalk. Results show that the proposed algorithm can reduce the blocking ratio under low loads and crosstalk under all loads, when compared to other RCSA algorithms in the literature. } }