Automatic restoration of X-ray Photography by estimating point spread function

In this paper, an image restoration method using Iterative Blind Deconvolution is proposed. It removes a blur by estimating the Point Spread Function (PSF) of Chest X-ray Photography (Chest-XP) automatically. The Chest-XP contains a blur in the principle of taking images. The conventional methods remove a blur by measuring a phantom image or using the blind deconvolution. However, there are problems that a phantom image should be precisely taken, or the parameters of evaluation function are empirically and manually given. In the proposed method, they are automatically decided by using edges and noises in Chest-XP and estimated images. We demonstrate the effectiveness for interpolating Chest-XP and camera images.