METHOD FOR BLIND DECONVOLUTION FOR THE IMAGE BLURRED BY RADIAL SYMMETRY FINITE IMPULSE RESPONSE POINT SPREAD FUNCTION

摘要

A method for blind deconvolution for an image blurred by a radial symmetry finite impulse response PSF is provided to compute lines of radial direction in a fourier domain through radon transformation, measure a PSF by using a subspace method, and restore each signal, thereby perfectly restoring an image from a single number of image and restoring an original image even when data of the PSF of an image system is insufficient. To apply a subspace method, lines of radial direction in a fourier domain are computed by using radon transformation(S10). By applying a subspace method in a signal subspace with respect to the lines of radial direction in the fourier domain, a PSF(Point Spread Function) blurring an original image is measured(S20). By using the measured PSF, a convolution matrix is generated to restore an original signal(S30). An image is restored into the same image as the original image through inverse radon transformation with respect to the lines of radial direction in the fourier domain passing through the above third step(S40).