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公开(公告)号：US20200228822A1
公开(公告)日：2020-07-16
申请号：US16830236
申请日：2020-03-25
Inventor： Sung Chang Lim , Hui Yong Kim , Se Yoon Jeong , Suk Hee Cho , Dong San Jun , Jong Ho Kim , Ha Hyun Lee , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/513 , H04N19/61 , H04N19/44 , H04N19/426
Abstract: The present invention relates to image processing, and more particularly, to a video coding/decoding method using a clipped motion vector and an apparatus thereof. An embodiment of the present invention relates to a method of decoding an image. The method includes clipping a motion vector of a reference picture in a predetermined dynamic range to generate a clipped motion vector, storing the clipped motion vector in a buffer, deriving a motion vector of a coding treeblock using the motion vector stored in the buffer, and performing inter prediction decoding process using the motion vector of the coding treeblock. According to the exemplary embodiment of the present invention, a size of a memory required for storing motion vectors may be reduced.
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62.发明授权公开(公告)号：US10674169B2
公开(公告)日：2020-06-02
申请号：US16134131
申请日：2018-09-18
Applicant: Electronics and Telecommunications Research Institute , KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Jong Ho Kim , Hui Yong Kim , Se Yoon Jeong , Sung Chang Lim , Ha Hyun Lee , Jin Ho Lee , Suk Hee Cho , Jin Soo Choi , Jin Woong Kim , Chie Teuk Ahn , Mun Churl Kim , Bum Shik Lee
Abstract: Disclosed decoding method of the intra prediction mode comprises the steps of: determining whether an intra prediction mode of a present prediction unit is the same as a first candidate intra prediction mode or as a second candidate intra prediction mode on the basis of 1-bit information; and determining, among said first candidate intra prediction mode and said second candidate intra prediction mode, which candidate intra prediction mode is the same as the intra prediction mode of said present prediction unit on the basis of additional 1-bit information, if the intra prediction mode of the present prediction unit is the same as at least either the first candidate intra prediction mode or the second candidate intra prediction mode, and decoding the intra prediction mode of the present prediction unit.
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公开(公告)号：US10574985B2
公开(公告)日：2020-02-25
申请号：US16244854
申请日：2019-01-10
Applicant: Electronics and Telecommunications Research Institute , Kwangwoon University Industry-Academic Collaboration Foundation , University-Industry Cooperation Group of Kyung Hee University
Inventor： Sung Chang Lim , Ha Hyun Lee , Se Yoon Jeong , Hui Yong Kim , Suk Hee Cho , Jong Ho Kim , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim , Chie Teuk Ahn , Dong Gyu Sim , Seoung Jun Oh , Gwang Hoon Park , Sea Nae Park , Chan Woong Jeon
IPC: H04N19/117 , H04N19/46 , H04N19/593 , H04N19/132 , H04N19/176 , H04N19/17 , H04N19/50 , H04N19/109 , H04N19/159 , H04N19/174 , H04N19/192 , H04N19/82
Abstract: The present invention relates to an apparatus and method for encoding and decoding an image by skip encoding. The image-encoding method by skip encoding, which performs intra-prediction, comprises: performing a filtering operation on the signal which is reconstructed prior to an encoding object signal in an encoding object image; using the filtered reconstructed signal to generate a prediction signal for the encoding object signal; setting the generated prediction signal as a reconstruction signal for the encoding object signal; and not encoding the residual signal which can be generated on the basis of the difference between the encoding object signal and the prediction signal, thereby performing skip encoding on the encoding object signal.
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64.发明授权公开(公告)号：US10567782B2
公开(公告)日：2020-02-18
申请号：US16134250
申请日：2018-09-18
Applicant: Electronics and Telecommunications Research Institute , KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Jong Ho Kim , Hui Yong Kim , Se Yoon Jeong , Sung Chang Lim , Ha Hyun Lee , Jin Ho Lee , Suk Hee Cho , Jin Soo Choi , Jin Woong Kim , Chie Teuk Ahn , Mun Churl Kim , Bum Shik Lee
Abstract: Disclosed decoding method of the intra prediction mode comprises the steps of: determining whether an intra prediction mode of a present prediction unit is the same as a first candidate intra prediction mode or as a second candidate intra prediction mode on the basis of 1-bit information; and determining, among said first candidate intra prediction mode and said second candidate intra prediction mode, which candidate intra prediction mode is the same as the intra prediction mode of said present prediction unit on the basis of additional 1-bit information, if the intra prediction mode of the present prediction unit is the same as at least either the first candidate intra prediction mode or the second candidate intra prediction mode, and decoding the intra prediction mode of the present prediction unit.
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公开(公告)号：US10469840B2
公开(公告)日：2019-11-05
申请号：US15928878
申请日：2018-03-22
Applicant: Electronics and Telecommunications Research Institute , Kwangwoon University Industry-Academic Collaboration Foundation , University-Industry Cooperation Group of Kyung Hee University , Korea Advanced Institute of Science and Technology
Inventor： Sung-Chang Lim , Ha Hyun Lee , Hui Yong Kim , Se Yoon Jeong , Suk Hee Cho , Hae Chul Choi , Jong Ho Kim , Jin Ho Lee , Jin Soo Choi , Jin Woo Hong , Dong Gyu Sim , Seoung Jun Oh , Gwang Hoon Park , Mun Churl Kim , Neung Joo Hwang , Sea Nae Park
IPC: H04N19/122 , H04N19/124 , H04N19/176 , H04N19/12 , H04N19/139 , H04N19/44 , H04N19/625 , H04N19/50 , H04N19/60 , H04N19/14 , H04N19/18 , H04N19/182 , H04N19/107 , H04N19/11 , H04N19/119 , H04N19/13 , H04N19/159 , H04N19/52 , H04N19/55 , H04N19/593 , H04N19/615 , H04N19/91
Abstract: Provided is a video encoding apparatus, including a signal separator to separate a differential image block into a first domain and a second domain, based on a boundary line included in the differential image block, the differential image block indicating a difference between an original image and a prediction image with respect to the original image, a transform encoder to perform a transform encoding with respect to the first domain using a discrete cosine transform (DCT), a quantization unit to quantize an output of the transform encoding unit in a frequency domain, a space domain quantization unit to quantize the second domain in a space domain, and an entropy encoder to perform an entropy encoding using outputs of the quantization unit and the space domain quantization unit.
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Patent Agency Ranking
公开(公告)号：US10440393B2
公开(公告)日：2019-10-08
申请号：US16059378
申请日：2018-08-09
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: H04N19/82 , H04N19/176 , H04N19/44 , H04N19/593 , H04N19/117 , H04N19/157 , H04N19/136 , H04N19/105 , H04N19/182 , H04N19/147
Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes 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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公开(公告)号：US10440392B2
公开(公告)日：2019-10-08
申请号：US16058487
申请日：2018-08-08
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: H04N19/157 , H04N19/82 , H04N19/105 , H04N19/593 , H04N19/117 , H04N19/176 , H04N19/136 , H04N19/44 , H04N19/182 , H04N19/147
Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes 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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公开(公告)号：US10218972B2
公开(公告)日：2019-02-26
申请号：US15649330
申请日：2017-07-13
Applicant: Electronics and Telecommunications Research Institute , Kwangwoon University Industry-Academic Collaboration Foundation , University-Industry Cooperation Group of Kyung Hee University
Inventor： Sung Chang Lim , Ha Hyun Lee , Se Yoon Jeong , Hui Yong Kim , Suk Hee Cho , Jong Ho Kim , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim , Chie Teuk Ahn , Dong Gyu Sim , Seoung Jun Oh , Gwang Hoon Park , Sea Nae Park , Chan Woong Jeon
IPC: H04N19/11 , H04N19/117 , H04N19/46 , H04N19/593 , H04N19/132 , H04N19/17 , H04N19/50 , H04N19/109 , H04N19/159 , H04N19/174 , H04N19/192 , H04N19/82 , H04N19/176
Abstract: The present invention relates to an apparatus and method for encoding and decoding an image by skip encoding. The image-encoding method by skip encoding, which performs intra-prediction, comprises: performing a filtering operation on the signal which is reconstructed prior to an encoding object signal in an encoding object image; using the filtered reconstructed signal to generate a prediction signal for the encoding object signal; setting the generated prediction signal as a reconstruction signal for the encoding object signal; and not encoding the residual signal which can be generated on the basis of the difference between the encoding object signal and the prediction signal, thereby performing skip encoding on the encoding object signal.
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公开(公告)号：US10091502B2
公开(公告)日：2018-10-02
申请号：US15799086
申请日：2017-10-31
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
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：US10075734B2
公开(公告)日：2018-09-11
申请号：US15798024
申请日：2017-10-30
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: H04N19/105 , H04N19/593 , H04N19/117 , H04N19/176 , H04N19/182
Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes 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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