公开(公告)号：US20190394471A1

公开(公告)日：2019-12-26

申请号：US16466579

申请日：2016-12-05

Applicant: LG ELECTRONICS INC.

Inventor： Jin HEO

IPC: H04N19/159 ,  H04N19/13 ,  H04N19/105 ,  H04N19/124

Abstract: A method for encoding/decoding an image and a device therefor are disclosed. Specifically, the method for decoding the image by the decoding device, the method includes deriving an intra prediction mode of a current block, constructing reference samples with samples adjacent to an top of the current block and samples adjacent to a left of the current block, and generating a prediction sample, when the intra prediction mode is a vertical/horizontal strong mode, using a reference sample having the same x-coordinate as the sample, a reference sample having the same y-coordinate as the sample, a reference sample adjacent to a bottom-left of the current block, and a reference sample adjacent to an top-right of the current block among the reference samples for each sample in the current block, wherein a weighting value w1 applied to the reference sample having the same y-coordinate as the sample and the reference sample adjacent to the top-right of the current block and a weighting value w2 applied to the reference sample having the same x-coordinate as the sample and the reference sample adjacent to the bottom-left of the current block are set to be different from each other.

公开(公告)号：US20190230352A1

公开(公告)日：2019-07-25

申请号：US16337802

申请日：2017-08-30

Applicant: LG ELECTRONICS INC.

Inventor： Jin HEO ,  Hyeongmoon JANG ,  Sunmi YOO

IPC: H04N19/11 ,  H04N19/593 ,  H04N19/186 ,  H04N19/176 ,  H04N19/159 ,  H04N19/513

Abstract: The image decoding method performed by a decoding apparatus, according to the present invention, comprises the steps of: receiving intra prediction mode information of a current chroma block; deriving intra prediction candidate modes of the current chroma block on the basis of a neighboring chroma block of the current chroma block; deriving an intra prediction mode of the current chroma block on the basis of the intra prediction mode information and the intra prediction candidate modes; and predict the current chroma block on the basis of the intra prediction mode, wherein the intra prediction candidate modes include an intra prediction mode applied to a neighboring chroma block of the current chroma block.

公开(公告)号：US20190174128A1

公开(公告)日：2019-06-06

申请号：US16324452

申请日：2017-02-07

Applicant: LG Electronics Inc.

Inventor： Hyeongmoon JANG ,  Junghak NAM ,  Jaehyun LIM ,  Jin HEO

IPC: H04N19/11 ,  H04N19/132 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

Abstract: Disclosed are an intra-prediction mode-based image processing method and a device therefor. Particularly, a method for processing an image on the basis of an intra-prediction mode may comprise the steps of: configuring a reference sample to be used for prediction of a current block on the basis of width information and height information of the current block when the current block is a non-square block; deriving an intra-prediction mode of the current block; and generating a prediction sample of the current block by using the reference sample on the basis of the intra-prediction mode of the current block.

公开(公告)号：US20180270508A1

公开(公告)日：2018-09-20

申请号：US15757584

申请日：2016-05-13

Applicant: LG Electronics Inc.

Inventor： Jaehyun LIM ,  Naeri PARK ,  Jin HEO

IPC: H04N19/82 ,  H04N19/132 ,  H04N19/176

CPC classification number: H04N19/82 ,  H04N19/105 ,  H04N19/107 ,  H04N19/109 ,  H04N19/117 ,  H04N19/119 ,  H04N19/124 ,  H04N19/132 ,  H04N19/157 ,  H04N19/176 ,  H04N19/61

Abstract: Disclosed are a method for encoding/decoding an image and an apparatus therefor. Specifically, the method for decoding an image may comprise the steps of: performing interpolation filtering of a reference picture; generating predicted samples from samples in the reference picture for which the interpolation filtering has been performed; generating reconstructed samples by adding residual samples and the predicted samples; and performing loop filtering of the reconstructed samples, wherein whether the predicted samples have been generated by applying a predetermined filter when performing the interpolation filtering is determined in units of first blocks; whether the filter is applied to the reconstructed samples is determined in units of second blocks, and whether the filter is applied to the reconstructed samples when performing the loop filtering is determined on the basis of whether the filter has been applied to the predicted samples when performing the interpolation filtering.

公开(公告)号：US20180255304A1

公开(公告)日：2018-09-06

申请号：US15562304

申请日：2016-03-29

Applicant: LG ELECTRONICS INC.

Inventor： Yongjoon JEON ,  Jin HEO ,  Sunmi YOO ,  Seungwook PARK

IPC: H04N19/159 ,  H04N19/70 ,  H04N19/46 ,  H04N19/176

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/11 ,  H04N19/129 ,  H04N19/134 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: The present invention provides a method for decoding a video signal, the method comprising the steps of: obtaining, from a video signal, a flip flag for indicating whether a flip of an angle interval is performed when an intra prediction is performed; deriving a flip angle variable according to an intra prediction mode if the flip of the angle interval is performed according to the flip flag when the intra prediction is performed; and generating an intra prediction sample based on the flip angle variable, wherein the angle interval indicates an interval between angle parameters, which indicate a predicting direction.

公开(公告)号：US20180184131A1

公开(公告)日：2018-06-28

申请号：US15735450

申请日：2016-06-13

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Jin HEO ,  Junghak NAM

IPC: H04N19/91 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44

CPC classification number: H04N19/91 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/48

Abstract: The present invention provides a method for encoding/decoding an image and a device therefor. Particularly, a method for encoding an image by an encoding device may comprise the steps of: dividing a quantized coefficient block into coefficient groups having a predetermined size; searching a first coefficient group which is a last coefficient group including a non-zero coefficient within the quantized coefficient block according to a predetermined inverse-scanning order; searching the first coefficient group for the last non-zero coefficient according to the inverse-scanning order; relocating the non-zero coefficient of the first coefficient group to a second coefficient group which is a preceding coefficient group of the last coefficient group according to the inverse-scanning order; and entropy-encoding by an encoder according to a predetermined scanning order.

公开(公告)号：US20180098074A1

公开(公告)日：2018-04-05

申请号：US15560651

申请日：2015-12-03

Applicant: LG Electronics Inc.

Inventor： Jin HEO ,  Yongjoon JEON ,  Sunmi YOO ,  Eunyong SON ,  Junghak NAM

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/107

CPC classification number: H04N19/159 ,  H04N19/107 ,  H04N19/119 ,  H04N19/176 ,  H04N19/593

Abstract: In the present invention, a method for processing an image on the basis of an intra prediction mode and an apparatus therefor are disclosed. Particularly, the method for processing an image on the basis of an intra prediction mode may comprise the steps of: partitioning a block to be processed, on the basis of an intra prediction mode of the block to be processed; and performing intra prediction for the split block to be processed, wherein the direction in which the block to be processed is split is perpendicular to the prediction direction of the intra prediction mode of the block to be processed.

公开(公告)号：US20180091810A1

公开(公告)日：2018-03-29

申请号：US15560101

申请日：2016-03-22

Applicant: LG Electronics Inc.

Inventor： Eunyong SON ,  Seungwook PARK ,  Yongjoon JEON ,  Moonmo KOO ,  Jin HEO ,  Sunmi YOO

IPC: H04N19/105 ,  H04N19/109 ,  H04N19/115 ,  H04N19/96 ,  H04N19/13

CPC classification number: H04N19/105 ,  H04N19/109 ,  H04N19/11 ,  H04N19/115 ,  H04N19/13 ,  H04N19/96

Abstract: The present invention relates to a method and a device for decoding a bitstream for a video signal, the method comprising the steps of: acquiring, from the bitstream, type number information and type information for a plurality of CTBs; acquiring, from the bitstream, type indication information for a current CTB among the plurality of CTBs; determining the size of the current CTB on the basis of a CTB type indicated by the type indication information; determining one or more coding blocks within the current CTB on the basis of the determined size of the current CTB and the determined minimum size of the coding block; acquiring, from the bitstream, prediction mode information with respect to each of the one or more coding blocks; and reconstructing a current coding block among the one or more coding blocks on the basis of prediction mode information related to the current coding block.

公开(公告)号：US20160286228A1

公开(公告)日：2016-09-29

申请号：US14442669

申请日：2013-11-13

Applicant: LG ELECTRONICS INC.

Inventor： Jaewon SUNG ,  Sehoon YEA ,  Moonmo KOO ,  Jin HEO ,  Taesup KIM ,  Jiwook JUNG ,  Eunyong SON

IPC: H04N19/513 ,  H04N19/139 ,  H04N19/176

CPC classification number: H04N19/513 ,  H04N19/139 ,  H04N19/176 ,  H04N19/436 ,  H04N19/52 ,  H04N19/527 ,  H04N19/597

Abstract: According to the present invention, a method for processing video signals can determine an interview motion vector of a current block using an interview motion vector of a temporal neighboring block in consideration of a global motion vector. The present invention can obtain an accurate interview motion vector according to obtaining the temporal neighboring block of the current block in consideration of a motion change according to output sequence information and accordingly, can increase the accuracy of inter-prediction.

Abstract translation: 根据本发明，用于处理视频信号的方法可以考虑全局运动矢量使用时间相邻块的访问运动矢量来确定当前块的访问运动矢量。 考虑到根据输出序列信息的运动变化，本发明可以根据获得当前块的时间相邻块来获得准确的访问运动矢量，因此可以提高帧间预测的精度。

公开(公告)号：US20250168344A1

公开(公告)日：2025-05-22

申请号：US19028701

申请日：2025-01-17

Applicant: LG Electronics Inc.

Inventor： Jungah CHOI ,  Sunmi YOO ,  Jin HEO ,  Jangwon CHOI ,  Seunghwan KIM

IPC: H04N19/12 ,  H04N19/124 ,  H04N19/167 ,  H04N19/176 ,  H04N19/70

Abstract: An image decoding method performed by a decoding apparatus, according to the present document, comprises the steps of: obtaining a dependent quantization available flag; obtaining a TSRC available flag, on the basis of the dependent quantization available flag; determining a residual coding syntax for a current block, on the basis of the TSRC available flag; obtaining residual information of the determined residual coding syntax for the current block; deriving a residual sample of the current block, on the basis of the residual information; and generating a reconstructed picture, on the basis of the residual sample, wherein the dependent quantization available flag is a flag regarding whether dependent quantization is available, the TSRC available flag is a flag regarding whether TSRC is available, and the TSRC available flag is obtained on the basis of the dependent quantization available flag having a value of 0.