Evaluation of RF Through-The-Wall Mapping Reconstruction Methods using an Objective Image Quality Index

Abstract

This work aims at comparing four reconstruction techniques (Filtered Backprojection Reconstruction, Direct Fourier Reconstruction, Algebraic Reconstruction Technique and Simultaneous Iterative Reconstruction Technique) that can be applied to RF-based through-the-wall mapping. All these methods were originally used in computerized X-ray tomography. A stochastic simulation model is set up, using pathloss equations corrupted by Rayleigh noise to account for multipath reception of the RF wave and two test floor maps are defined. From that analysis, a metric for image quality assessment (Mean Structural Similarity Index) is selected to allow an objective comparison of the reconstructed images.