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公开(公告)号：US09838689B2
公开(公告)日：2017-12-05
申请号：US15477714
申请日：2017-04-03
Inventor： Ha Hyun Lee , Hui Yong Kim , Sung Chang Lim , Jong Ho Kim , Jin Ho Lee , Se Yoon Jeong , Suk Hee Cho , Jin Soo Choi , Jin Woong Kim , Chie Teuk Ahn
IPC: H04N7/12 , G06K9/46 , H04N19/107 , H04N19/593 , H04N19/176 , H04N19/196 , H04N19/13 , H04N19/61 , H04N19/11 , H04N19/157 , H04N19/169 , H04N19/50 , H04N19/137 , H04N19/513 , H04N19/70 , H04N19/105 , H04N19/109 , H04N19/159 , H04N19/52 , H04N19/91
CPC classification number: H04N19/107 , H04N19/105 , H04N19/109 , H04N19/11 , H04N19/13 , H04N19/137 , H04N19/157 , H04N19/159 , H04N19/176 , H04N19/1887 , H04N19/196 , H04N19/50 , H04N19/52 , H04N19/521 , H04N19/593 , H04N19/61 , H04N19/70 , H04N19/91
Abstract: An intra prediction method according to the present invention comprises the following steps: deriving neighboring prediction mode information from a left neighboring prediction mode and a top neighboring prediction mode; deriving an intra prediction mode for a target unit to be decoded, using the derived neighboring prediction mode information; and performing intra prediction for the target unit to be decoded, based on the intra prediction mode. According to the present invention, video encoding/decoding efficiency may be improved.
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公开(公告)号：US09788000B2
公开(公告)日：2017-10-10
申请号：US14525626
申请日：2014-10-28
Inventor： Sung Chang Lim , Se Yoon Jeong , Jong Ho Kim , Hui Yong Kim , Dae Yeol Lee , Suk Hee Cho , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/186 , H04N19/176 , H04N19/61 , H04N19/159
CPC classification number: H04N19/186 , H04N19/159 , H04N19/176 , H04N19/61
Abstract: The present invention provides an image encoding apparatus carrying out inter-color prediction, comprising a residual block acquisition module obtaining a residual block with respect to a first color component and a residual block with respect to a second color component from a difference between an input block and a prediction block; an inter-color component prediction module carrying out inter-color component prediction by generating a residual signal reflecting a difference between a residual block with respect to the first color component and a residual block with respect to the second color component; a transform module generating a transformat coefficient by carrying out transformation with respect to the residual signal; a quantization module generating quantized data by carrying out quantization with respect to the transform coefficient; and an entropy encoding module carrying out entropy encoding by removing statistical redundancy of the quantized data.
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公开(公告)号：US09781448B2
公开(公告)日：2017-10-03
申请号：US14825825
申请日：2015-08-13
Inventor： Jin Ho Lee , Hui Yong Kim , Se Yoon Jeong , Suk Hee Cho , Ha Hyun Lee , Jong Ho Kim , Sung Chang Lim , Jin Soo Choi , Jin Woong Kim , Chie Teuk Ahn
IPC: H04N19/117 , H04N19/593 , H04N19/176 , H04N19/44 , H04N19/136 , H04N19/82 , H04N19/147
CPC classification number: H04N19/593 , H04N19/105 , H04N19/117 , H04N19/136 , H04N19/147 , H04N19/157 , H04N19/176 , H04N19/182 , H04N19/44 , H04N19/82
Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction comprises the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.
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