Patent ID: 6611361
Filing Date: 2003-08-26
Classification: H04N

Abstract:
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 MVB(f) for pixels positioned at the boundary of a block in a vertical direction, a smoothing functional MVW(f) for pixels positioned inside the block in a horizontal direction, a smoothing functional MHB(f) for pixels positioned at the boundary of a block in a horizontal direction, a smoothing functional MHW(f) for pixels positioned inside the block in a horizontal direction, a smoothing functional MT(f) for pixels moved and compensated in the temporal section, â€œfâ€  indicating the original image.