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Abstract

.[.The present invention relates to an image processing technique, and in particular to a method for restoring a compressed image by using a hybrid motion compensation discrete cosine transform (hybrid MC/DCT) mechanism, including: a step of 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 of computing a restored image by performing a gradient operation on the smoothing functional in regard to the original image, thereby preventing the blocking artifacts and the ringing effects in regard to the pixels having an identical property in image blocks..]. .Iadd.In one embodiment, the method includes obtaining a pixel value in a current block and at least one adjacent pixel value. A type of the current block is one of an intra-coded type and inter-coded type. A smoothing value of the current block is determined based on the obtained pixel value in the current block and the adjacent pixel value. A pixel value around a boundary of the current block is smoothed based on the type of the current block and the smoothing value..Iaddend.

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First Claim