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公开(公告)号：USRE42713E1
公开(公告)日：2011-09-20
申请号：US11851551
申请日：2007-09-07
申请人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
发明人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
CPC分类号： H04N19/117 , H04N19/134 , H04N19/14 , H04N19/182 , H04N19/48 , H04N19/80 , H04N19/86
摘要： A method of coding a moving picture reduces blocking artifacts. The method includes defining pixel sets S0, S1, S2 around a block boundary, selectively determining a deblocking mode as a default mode or a DC offset mode depending on the degree of blocking artifacts. If the default mode is selected, frequency information is obtained around the block boundary per pixel using a 4-point DCT kernel, for example, a magnitude of a discontinuous component belonging to the block boundary is replaced with a minimum magnitude of discontinuous components belonging to the surroundings of the block boundary in the frequency domain and the replacing step is applied to the spatial domain. If the DC offset mode is selected and a determination is made to perform DC offset mode, the blocking artifacts in a smooth region are removed in the DC offset mode.
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公开(公告)号：US07492961B2
公开(公告)日：2009-02-17
申请号：US12105362
申请日：2008-04-18
申请人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
发明人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
CPC分类号： H04N19/86 , H04N19/00 , H04N19/126 , H04N19/137 , H04N19/176 , H04N19/182 , H04N19/198 , H04N19/48 , H04N19/527 , H04N19/80 , H04N19/85
摘要： A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.
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公开(公告)号：US07403667B2
公开(公告)日：2008-07-22
申请号：US11846685
申请日：2007-08-29
申请人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
发明人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
CPC分类号： H04N19/86 , H04N19/00 , H04N19/126 , H04N19/137 , H04N19/176 , H04N19/182 , H04N19/198 , H04N19/48 , H04N19/527 , H04N19/80 , H04N19/85
摘要： A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.
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公开(公告)号：US07391922B2
公开(公告)日：2008-06-24
申请号：US11835230
申请日：2007-08-07
申请人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
发明人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
CPC分类号： H04N19/86 , H04N19/00 , H04N19/126 , H04N19/137 , H04N19/176 , H04N19/182 , H04N19/198 , H04N19/48 , H04N19/527 , H04N19/80 , H04N19/85
摘要： A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.
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公开(公告)号：US07305143B2
公开(公告)日：2007-12-04
申请号：US11626570
申请日：2007-01-24
申请人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
发明人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
CPC分类号： H04N19/86 , H04N19/00 , H04N19/126 , H04N19/137 , H04N19/176 , H04N19/182 , H04N19/198 , H04N19/48 , H04N19/527 , H04N19/80 , H04N19/85
摘要： A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.
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公开(公告)号：US07283681B2
公开(公告)日：2007-10-16
申请号：US11626561
申请日：2007-01-24
申请人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
发明人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
CPC分类号： H04N19/86 , H04N19/00 , H04N19/126 , H04N19/137 , H04N19/176 , H04N19/182 , H04N19/198 , H04N19/48 , H04N19/527 , H04N19/80 , H04N19/85
摘要： A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.
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公开(公告)号：US08983225B2
公开(公告)日：2015-03-17
申请号：US12573531
申请日：2009-10-05
申请人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
发明人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
IPC分类号： G06T5/00 , H04N19/86 , H04N19/137 , H04N19/00 , H04N19/527 , H04N19/126 , H04N19/48
CPC分类号： H04N19/86 , H04N19/00 , H04N19/126 , H04N19/137 , H04N19/176 , H04N19/182 , H04N19/198 , H04N19/48 , H04N19/527 , H04N19/80 , H04N19/85
摘要： A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.
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公开(公告)号：USRE42660E1
公开(公告)日：2011-08-30
申请号：US11834347
申请日：2007-08-06
申请人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
发明人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
CPC分类号： H04N19/117 , H04N19/134 , H04N19/14 , H04N19/182 , H04N19/48 , H04N19/80 , H04N19/86
摘要： A method of coding a moving picture reduces blocking artifacts. The method includes defining pixel sets S0, S1, S2 around a block boundary, selectively determining a deblocking mode as a default mode or a DC offset mode depending on the degree of blocking artifacts. If the default mode is selected, frequency information is obtained around the block boundary per pixel using a 4-point DCT kernel, for example, a magnitude of a discontinuous component belonging to the block boundary is replaced with a minimum magnitude of discontinuous components belonging to the surroundings of the block boundary in the frequency domain and the replacing step is applied to the spatial domain. If the DC offset mode is selected and a determination is made to perform DC offset mode, the blocking artifacts in a smooth region are removed in the DC offset mode.
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公开(公告)号：US07616832B2
公开(公告)日：2009-11-10
申请号：US12105307
申请日：2008-04-18
申请人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
发明人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
CPC分类号： H04N19/86 , H04N19/00 , H04N19/126 , H04N19/137 , H04N19/176 , H04N19/182 , H04N19/198 , H04N19/48 , H04N19/527 , H04N19/80 , H04N19/85
摘要： A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.
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公开(公告)号：US07616831B2
公开(公告)日：2009-11-10
申请号：US12105305
申请日：2008-04-18
申请人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
发明人： Hyun Mun Kim , Jong Beom Ra , Sung Deuk Kim , Young Su Lee
CPC分类号： H04N19/86 , H04N19/00 , H04N19/126 , H04N19/137 , H04N19/176 , H04N19/182 , H04N19/198 , H04N19/48 , H04N19/527 , H04N19/80 , H04N19/85
摘要： A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.
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