IMAGE ENCODING/DECODING APPARATUS AND METHOD USING MULTI-DIMENSIONAL INTEGER TRANSFORM

WIPO Patent Application WO/2010/151018

A2

The present invention relates to an image encoding/decoding apparatus and method using a multi-dimensional integer transform. The image encoding method of the present invention comprises: dividing a sub-block into rectangular block units and encoding the units stepwise so as to output a rectangular encoded bitstream for each sub-block, and encoding a sub-block into square block units so as to output a square encoded bitstream for each sub-block; and computing the encoding cost for a case where at least one rectangular encoded bitstream is included and the encoding cost for a case where no rectangular encoded bitstream is included and then, based on the costs, generating and outputting a bitstream for a macro block by using at least one of the square and rectangular encoded bitstream. According to the present invention, since a high-efficiency encoding scheme is selectively determined when encoding or decoding an image the prediction accuracy may be increased, and this in turn can improve the image encoding efficiency.

KIM SUNYEON (KR)
MOON JOOHEE (KR)
LEE YUNGLYUL (KR)
KIM HAEKWANG (KR)
JEON BYEUNGWOO (KR)
PARK MINCHEOL (KR)
KIM DONGWON (KR)

PCT/KR2010/004015

December 29, 2010

June 22, 2010

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SK TELECOM CO LTD (KR)
KIM SUNYEON (KR)
MOON JOOHEE (KR)
LEE YUNGLYUL (KR)
KIM HAEKWANG (KR)
JEON BYEUNGWOO (KR)
PARK MINCHEOL (KR)
KIM DONGWON (KR)

H04N7/24; H04N19/94

KR20050047373A	2005-05-20
KR20050045746A	2005-05-17
KR20080070478A	2008-07-30
KR20080102947A	2008-11-26

LEE, CHULHEE (KR)
이철희 (KR)

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