Facsimile and static presentation processing – Facsimile – Picture signal generator
Reissue Patent
2007-08-20
2010-10-19
Worku, Negussie (Department: 2625)
Facsimile and static presentation processing
Facsimile
Picture signal generator
C358S539000, C358S426070, C358S296000, C382S232000, C382S233000, C382S254000, C375S240160, C375S240220, C348S475000, C348S700000
Reissue Patent
active
RE041835
ABSTRACT:
delete-start id="DEL-S-00001" date="20101019" ?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.delete-end id="DEL-S-00001" ?insert-start id="INS-S-00001" date="20101019" ?In one embodiment, the method includes obtaining a pixel value in a current block and at least one adjacent pixel value, obtaining a difference value between the pixel value in the current block and the adjacent pixel value, and obtaining a smoothing value of the current image based on the difference value. A pixel value around a boundary of the current block is smoothed based on the smoothing value and quantization information for the current block.insert-end id="INS-S-00001" ?
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Harness & Dickey & Pierce P.L.C.
LG Electronics Inc.
Worku Negussie
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