Patent ID: RE41400

Claim:
A method for restoring a compressed image of an image processing system, comprising: a step for defining a smoothing functional having a smoothing degree of an image and reliability for an original image by pixels having an identical property in image block units; and a step for computing a restored image by performing a gradient operation on the smoothing functional in regard to the original image; wherein the smoothing functional M(f) comprises a sum of a smoothing functional M VB (f) for pixels positioned at the boundary of a block in a vertical direction, a smoothing functional M VW (f) for pixels positioned inside the block in a horizontal direction, a smoothing functional M HB (f) for pixels positioned at the boundary of a block in a horizontal direction, a smoothing functional M HW (f) for pixels positioned inside the block in a horizontal direction, a smoothing functional M T (f) for pixels moved and compensated in the temporal section, “f” indicating the original image.