IMAGE PROCESSING APPARATUS AND SYSTEMS USING ESTIMATED POINT SPREAD FUNCTION

An image processing apparatus includes a point spread function (PSF) pattern generation unit for generating a PSF pattern in which a plurality of PSFs are located in a plurality of lines of the PSF pattern; a PSF estimation unit for estimating PSFs of an out-of-focus input image from step responses of the plurality of lines of the PSF pattern with respect to an edge of the out-of-focus input image; and an image restoration unit for restoring the out-of-focus input image to a focused restored image using the estimated PSF.