%X In the framework of inverse scattering techniques, this paper presents the integration of a multi-resolution technique and the level-set method for qualitative microwave imaging. %A Manuel Benedetti %A Dominique Lesselier %A Marc Lambert %A Andrea Massa %L elediasc12522 %K Microwave Imaging, Inverse Scattering, Level Sets, Iterative Multi-scaling Approach, Homogeneous Dielectric Scatterers %D 2009 %I University of Trento %T A Multi-Resolution Technique Based on Shape Optimization for the Reconstruction of Homogeneous Dielectric Objects