Method of decoding a current image

Details Method of decoding a current image Method of decoding a current image

2007-08-20

2010-06-29

Safaipour, Houshang (Department: 2625)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S539000, C358S426030, C358S426070, C382S254000, C382S232000, C382S233000

Reissue Patent

active

RE041400

ABSTRACT:
delete-start id="DEL-S-00001" date="20100629" ?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="20100629" ?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 block is smoothed based on a threshold value and the smoothing value.insert-end id="INS-S-00001" ?

REFERENCES:
patent: 4719885 (1988-01-01), Nagano et al.
patent: 5122875 (1992-06-01), Raychaudhuri et al.
patent: 5475434 (1995-12-01), Kim
patent: 5557330 (1996-09-01), Astle
patent: 5589829 (1996-12-01), Astle
patent: 5590064 (1996-12-01), Astle
patent: 5825934 (1998-10-01), Ohsawa
patent: 5898457 (1999-04-01), Nagao et al.
patent: 6026232 (2000-02-01), Yogeshwar et al.
patent: 6115503 (2000-09-01), Kaup
patent: 6115505 (2000-09-01), Hashima et al.
patent: 6144700 (2000-11-01), Kim
patent: 6148109 (2000-11-01), Boon et al.
patent: 6192081 (2001-02-01), Chiang et al.
patent: 6222641 (2001-04-01), Karidi
patent: 6222881 (2001-04-01), Walker
patent: 6246802 (2001-06-01), Fujihara et al.
patent: 6295326 (2001-09-01), Tonissen et al.
patent: 6295376 (2001-09-01), Nakaya
patent: 6310962 (2001-10-01), Chung et al.
patent: 6343141 (2002-01-01), Okada et al.
patent: 6360014 (2002-03-01), Boon
patent: 6381275 (2002-04-01), Fukuhara et al.
patent: 6415055 (2002-07-01), Kato
patent: 6738528 (2004-05-01), Nio et al.
patent: 2003/0218781 (2003-11-01), Suino
patent: 2005/0243375 (2005-11-01), Ohyama et al.
patent: 2007/0070423 (2007-03-01), Kakutani
patent: 5308623 (1993-11-01), None
patent: 8084342 (1996-03-01), None
Japanese Office Action dated Oct. 31, 2006.
U.S. Office Action dated Nov. 19, 2009 in corresponding U.S. Appl. No. 11/892,179.

Affiliated with

Also associated with

Rating

Method of decoding a current image does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of decoding a current image, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of decoding a current image will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4207010