apparatus and method for restoring image

An apparatus and method for restoring an image is provided. Image decoding according to an embodiment of the invention the device is an input image from the Red, Green and Blue channel edge to the intensity detected Red, the edge strength detection unit, and an edge intensity of the detected Green channel generating Green and Blue channel edge map corresponding to the effective value generating unit, and a valid value for generating an effective value representing the blur level from the edge intensity of which corrects the edge intensity of the detected Red and Blue channel edge intensity correction, and the corrected Red and Blue channel using the point spread function comprising image restoration unit for restoring the input image using the point spread function estimation and the point spread function of estimating (point spread function) to. Image, the edge intensity, the effective value, the point spread function