Binary contrast source inversion method

In this study we propose a multiplicative regularization scheme to deal with the problem of detecting and imaging of homogeneous dielectric objects (the so-called binary objects). By considering the binary regularizer as a multiplicative constraint for the Contrast Source Inversion (CSI) method we are able to avoid the necessity of determining the regularization parameter before the inversion process has been started. Numerical results show that the binary CSI method is able to obtain a reasonable reconstruction result even when a wrong estimate of the material parameter is used.