Iterative refinement in inverse scattering technique with median filter

This paper presents a preliminary study of integrating median filter in Forward-Backward Time-Stepping (FBTS) algorithm for single object detection. A two dimensional (2D) homogeneous numerical phantom image with significant contrast was utilized to represent an unknown object. Mean Squared Error (MSE) was used to evaluate the efficiency of the proposed technique in eliminating artifacts that exists in the reconstructed image due to strong nonlinearity and ill-posedness of inverse scattering method in FBTS method. Preliminary results shown that MSE of median filtered FBTS was significantly lower than FBTS.