Patent ID: 8923644
Filing Date: 2014-12-30
Classification: G06T

Abstract:
1. An image processing apparatus comprising: a point spread function (PSF) pattern generation unit that is configured to generate a PSF pattern in which a plurality of PSFs are located in a plurality of lines of the PSF pattern; a PSF estimation unit that is configured to estimate at least one of the plurality of PSFs of an out-of-focus input image from at least one of a plurality of step responses of respective ones 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 that is configured to restore the out-of-focus input image to a focused restored image using the estimated PSF, wherein at least one of the PSF pattern generation unit, the PSF estimation unit and the image restoration unit comprise an image signal processor, wherein the PSF pattern includes a center point and a plurality of center circles, wherein the plurality of PSFs are located at a lattice point where a plurality of horizontal lines and a plurality of vertical lines are located inside an outermost center circle among the plurality of center circles, wherein, responsive to the plurality of PSFs being located in the center point or the plurality of center circles, the PSF estimation unit estimates an intensity of the center point and/or intensities of the center circles as the corresponding PSF, and, responsive to the plurality of PSFs not being located in the center point or the plurality of center circles, the PSF estimation unit estimates the average value of the intensities of an adjacent center point or adjacent center circles as the corresponding PSF, and wherein, responsive to a matrix A having factors corresponding to the intensity of the center point and/or the intensities of the center circles of each of the step responses for lines of the PSF pattern in a direction, a vector for the intensities of the center point and the center circles is r, and a vector for the step responses is s, an intensity calculation unit calculates the intensities of the center point and the center circles according to an equation Ar=s.