公开(公告)号：US20200053376A1

公开(公告)日：2020-02-13

申请号：US16658641

申请日：2019-10-21

Applicant: LG Electronics Inc.

Inventor： Seung Wook PARK ,  Jung Sun KIM ,  Young Hee CHOI ,  Byeong Moon JEON ,  Joon Young PARK

IPC: H04N19/51 ,  H04N19/86 ,  H04N19/44 ,  H04N19/107 ,  H04N19/11 ,  H04N19/61 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18

Abstract: The present invention relates to a video signal decoding method for adding an intra prediction mode as a sub-macroblock type to prediction of a macroblock in coding a video signal. The present invention includes obtaining a macroblock type, obtaining a sub-macroblock type when a macroblock includes a plurality of coded sub-macroblocks according the macroblock type, obtaining flag information indicating a DC (discrete cosine) transform size, determining the DC transform size of the coded sub-macroblock based on the flag information, when the sub-macroblock is intra prediction coded based on the sub-macroblock type, determining a prediction size of the intra prediction coded sub-macroblock based on the determined DC transform size, obtaining prediction direction information from a block adjacent to the sub-macroblock based on the prediction size of the sub-macroblock, and obtaining a prediction value of the sub-macroblock based on the prediction direction information. Accordingly, the present invention is able to raise coding efficiency of video signal by adding an intra prediction mode as a sub-macroblock type in predicting a macroblock.

公开(公告)号：US20190098318A1

公开(公告)日：2019-03-28

申请号：US16191026

申请日：2018-11-14

Applicant: LG ELECTRONICS INC.

Inventor： Yong Joon JEON ,  Seung Wook PARK ,  Jung Sun KIM ,  Joon Young PARK ,  Byeong Moon JEON ,  Jae Hyun LIM

IPC: H04N19/159 ,  H04N19/00 ,  H04N19/176 ,  H04N19/593 ,  H04N19/117 ,  H04N19/86 ,  H04N19/82 ,  H04N19/105

Abstract: An intra prediction method and a device using the intra prediction method are provided. The intra prediction method includes the steps of: deriving a current prediction mode as a prediction mode of a current block; constructing neighboring samples of the current block with available reference samples; filtering the available reference samples; and generating predicted samples of the current block on the basis of the filtered available reference samples. The filtering step includes performing the filtering using the available reference sample located in the prediction direction of the current prediction mode and a predetermined number of available reference samples neighboring to the prediction direction of the current prediction mode.

公开(公告)号：US20190089980A1

公开(公告)日：2019-03-21

申请号：US16194898

申请日：2018-11-19

Applicant: LG ELECTRONICS INC.

Inventor： Yong Joon JEON ,  Seung Wook PARK ,  Jae Hyun LIM ,  Jung Sun KIM ,  Joon Young PARK ,  Young Hee CHOI ,  Jae Won SUNG ,  Byeong Moon JEON

IPC: H04N19/577 ,  H04N19/11 ,  H04N19/80 ,  H04N19/182 ,  H04N19/70 ,  H04N19/159 ,  H04N19/105 ,  H04N19/593

Abstract: An intra prediction method and a device using the intra prediction method are provided. The intra prediction method using a DC mode includes setting a bottom-right pixel to a DC-predicted value, interpolating the bottom-right pixel and an n-th top reference pixel to derive predicted values of an n-th column and interpolating the bottom-right pixel and an n-th left reference pixel to derive predicted values of an n-row, and performing bidirectional linear interpolation to derive predicted values of pixels included in a prediction unit other than the n-th row and the n-th column.

公开(公告)号：US20180310024A1

公开(公告)日：2018-10-25

申请号：US16017143

申请日：2018-06-25

Applicant: LG Electronics Inc.

Inventor： Yong Joon JEON ,  Seung Wook Park ,  Jae Hyun LIM ,  Jung Sun KIM ,  Joon Young PARK ,  Young Hee CHOI ,  Jae Won SUNG ,  Byeong Moon JEON

IPC: H04N19/593 ,  H04N19/44 ,  H04N19/423 ,  H04N19/176 ,  H04N19/136 ,  H04N19/16 ,  G06T9/00 ,  H04N19/132 ,  H04N19/11 ,  H04N19/70 ,  H04N19/186

CPC classification number: H04N19/593 ,  G06T9/004 ,  H04N19/11 ,  H04N19/132 ,  H04N19/136 ,  H04N19/16 ,  H04N19/176 ,  H04N19/186 ,  H04N19/423 ,  H04N19/44 ,  H04N19/70

Abstract: Disclosed are an intra prediction method of a chrominance block using a luminance sample and an apparatus using the same. An image decoding method comprises the steps of: calculating an intra prediction mode of a chrominance block on the basis of an LM mapping table when the chrominance block uses an LM; and generating a prediction block for the chrominance block on the basis of the calculated intra prediction mode of the chrominance block. When intra prediction mode information of chrominance blocks are decoded, mutually different tables are used depending on whether or not an LM is used, so that encoding and decoding can be performed without an unnecessary waste of bits.

公开(公告)号：US20180048911A1

公开(公告)日：2018-02-15

申请号：US15790236

申请日：2017-10-23

Applicant: LG Electronics Inc.

Inventor： Yong Joon JEON ,  Seung Wook Park ,  Jae Hyun LIM ,  Jung Sun KIM ,  Joon Young PARK ,  Young Hee CHOI ,  Jae Won SUNG ,  Byeong Moon JEON

IPC: H04N19/593 ,  H04N19/136 ,  H04N19/176 ,  H04N19/423 ,  H04N19/44

CPC classification number: H04N19/593 ,  G06T9/004 ,  H04N19/11 ,  H04N19/132 ,  H04N19/136 ,  H04N19/16 ,  H04N19/176 ,  H04N19/186 ,  H04N19/423 ,  H04N19/44 ,  H04N19/70

Abstract: Disclosed are an intra prediction method of a chrominance block using a luminance sample and an apparatus using the same. An image decoding method comprises the steps of: calculating an intra prediction mode of a chrominance block on the basis of an LM mapping table when the chrominance block uses an LM; and generating a prediction block for the chrominance block on the basis of the calculated intra prediction mode of the chrominance block. When intra prediction mode information of chrominance blocks are decoded, mutually different tables are used depending on whether or not an LM is used, so that encoding and decoding can be performed without an unnecessary waste of bits.

公开(公告)号：US20170332078A1

公开(公告)日：2017-11-16

申请号：US15601573

申请日：2017-05-22

Applicant: LG ELECTRONICS INC.

Inventor： Jae Hyun LIM ,  Seung Wook PARK ,  Jung Sun KIM ,  Yong Joon JEON ,  Joon Young PARK ,  Byeong Moon JEON

IPC: H04N19/132 ,  H04N19/64 ,  H04N19/61 ,  H04N19/513 ,  H04N19/176 ,  H04N19/159 ,  H04N19/13 ,  H04N19/82 ,  H04N19/124

CPC classification number: H04N19/132 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/513 ,  H04N19/61 ,  H04N19/64 ,  H04N19/82 ,  H04N19/91

Abstract: The present invention relates to a method offor signaling information on a prediction mode and to a method of for decoding image information using same. A According to the present invention, the method offor signaling prediction mode information, serving according to the present invention, as a method offor signaling image information, includes performingperforming prediction on a current block and signaling the prediction-type information applied to the current block. The signaling of the information includes joint-coding and components of signaling information components constituting the prediction-type information. According to the present invention, overhead may be reduced when information on a prediction is signaled.

公开(公告)号：US20170171561A1

公开(公告)日：2017-06-15

申请号：US15441591

申请日：2017-02-24

Applicant: LG ELECTRONICS INC.

Inventor： Jae Won SUNG ,  Seung Wook PARK ,  Yong Joon JEON ,  Jung Sun KIM ,  Young Hee CHOI ,  Byeong Moon JEON ,  Joon Young PARK

IPC: H04N19/593 ,  H04N19/86 ,  H04N19/105 ,  H04N19/44 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182 ,  H04N19/46 ,  H04N19/14

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/14 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/46 ,  H04N19/61 ,  H04N19/86

Abstract: A method and apparatus for decoding a video signal are disclosed. A method for decoding a video signal includes obtaining block type information of a current block, confirming a prediction mode of the current block based on the block type information, obtaining, if the prediction mode of the current block is an intra prediction mode according to the prediction mode, at least one correlation parameter information using at least one neighboring pixel of the current block, obtaining an intra prediction value of the current block using the correlation parameter information, and reconstructing the current block using the intra prediction value of the current block.

公开(公告)号：US20170111654A1

公开(公告)日：2017-04-20

申请号：US15393716

申请日：2016-12-29

Applicant: LG Electronics Inc.

Inventor： Joon Young PARK ,  Seung Wook PARK ,  Jae Hyun LIM ,  Jung Sun KIM ,  Young Hee CHOI ,  Byeong Moon JEON ,  Yong Joon JEON

IPC: H04N19/56 ,  H04N19/176 ,  H04N19/44 ,  H04N19/139

CPC classification number: H04N19/56 ,  H04N19/107 ,  H04N19/117 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/44 ,  H04N19/513 ,  H04N19/52 ,  H04N19/521 ,  H04N19/61

Abstract: A method for selecting a motion vector predictor is provided. The method of selecting a motion vector predictor includes the steps of selecting motion vector predictor candidates for a current block and selecting a motion vector predictor of the current block out of the motion vector predictor candidates, wherein the motion vector predictor candidates for the current block include a motion vector of a first candidate block which is first searched for as an available block out of left neighboring blocks of the current block and a motion vector of a second candidate block which is first searched for as an available block out of upper neighboring blocks of the current block.

公开(公告)号：US20170105025A1

公开(公告)日：2017-04-13

申请号：US15389712

申请日：2016-12-23

Applicant: LG Electronics Inc.

Inventor： Yong Joon JEON ,  Seung Wook Park ,  Jae Hyun Lim ,  Jung Sun KIM ,  Joon Young PARK ,  Young Hee CHOI ,  Jae Won SUNG ,  Byeong Moon Jeon

IPC: H04N19/593 ,  H04N19/423 ,  H04N19/136 ,  H04N19/176 ,  H04N19/44

CPC classification number: H04N19/593 ,  G06T9/004 ,  H04N19/11 ,  H04N19/132 ,  H04N19/136 ,  H04N19/16 ,  H04N19/176 ,  H04N19/186 ,  H04N19/423 ,  H04N19/44 ,  H04N19/70

Abstract: Disclosed are an intra prediction method of a chrominance block using a luminance sample and an apparatus using the same. An image decoding method comprises the steps of: calculating an intra prediction mode of a chrominance block on the basis of an LM mapping table when the chrominance block uses an LM; and generating a prediction block for the chrominance block on the basis of the calculated intra prediction mode of the chrominance block. When intra prediction mode information of chrominance blocks are decoded, mutually different tables are used depending on whether or not an LM is used, so that encoding and decoding can be performed without an unnecessary waste of bits.

公开(公告)号：US20160191947A1

公开(公告)日：2016-06-30

申请号：US15065048

申请日：2016-03-09

Applicant: LG Electronics Inc.

Inventor： Joon Young PARK ,  Seung Wook PARK ,  Jae Hyun LIM ,  Jung Sun KIM ,  Young Hee CHOI ,  Byeong Moon JEON ,  Yong Joon JEON

IPC: H04N19/56 ,  H04N19/44 ,  H04N19/176 ,  H04N19/139 ,  H04N19/117 ,  H04N19/124 ,  H04N19/61 ,  H04N19/513 ,  H04N19/107

CPC classification number: H04N19/56 ,  H04N19/107 ,  H04N19/117 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/44 ,  H04N19/513 ,  H04N19/52 ,  H04N19/521 ,  H04N19/61

Abstract: A method for selecting a motion vector predictor is provided. The method of selecting a motion vector predictor includes the steps of selecting motion vector predictor candidates for a current block and selecting a motion vector predictor of the current block out of the motion vector predictor candidates, wherein the motion vector predictor candidates for the current block include a motion vector of a first candidate block which is first searched for as an available block out of left neighboring blocks of the current block and a motion vector of a second candidate block which is first searched for as an available block out of upper neighboring blocks of the current block.