Patent ID: 8159552
Filing Date: 2012-04-17
Classification: H04N

Abstract:
1. An apparatus for restoring an image, comprising: an edge-strength-detection module which detects a red (R)-channel edge strength, a green (G)-channel edge strength and a blue (B)-channel edge strength from an input image and generates an R-channel edge map, a G-channel edge map and a B-channel edge map based on the R-channel edge strength, the G-channel edge strength and the B-channel edge strength; an edge-strength-compensation module which compensates for the R-channel edge strength and the B-channel edge strength based on the G-channel edge strength; a valid-value-generation module which generates a valid value indicating a blur level based on the compensated R-channel edge strength and the compensated B-channel edge strength; a point spread function (PSF) estimation module which estimates a PSF corresponding to the valid value; and an image-restoration module which restores the input image using the PSF.