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：US20250063176A1

公开(公告)日：2025-02-20

申请号：US18937174

申请日：2024-11-05

Applicant: LG Electronics Inc.

Inventor： Jin HEO ,  Hyeong Moon JANG ,  Jangwon CHOI

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: An image encoding/decoding method and apparatus include features of generating a prediction block by performing intra prediction on a current block, determining whether to apply position dependent intra prediction combination (PDPC) to the prediction block, and generating a final prediction block of the current block, by applying PDPC to the prediction block based on the determination. The determining whether to apply PDPC to the prediction block may include determining whether a size of the current block satisfies a predetermined condition. Based on the size of the current block satisfying the predetermined condition, it may be determined to apply PDPC to the prediction block. Based on the size of the current block not satisfying the predetermined condition, a determination of a color component of the current block may be skipped and it may be determined not to apply PDPC to the prediction block.

公开(公告)号：US20250039366A1

公开(公告)日：2025-01-30

申请号：US18918823

申请日：2024-10-17

Applicant: LG Electronics Inc.

Inventor： Jangwon CHOI ,  Jaehyun LIM ,  Jin HEO ,  Ling LI ,  Seunghwan KIM

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/167 ,  H04N19/176 ,  H04N19/593

Abstract: An image decoding method performed by a decoding device according to the present document comprises the steps of: obtaining reference line index information and prediction information for a current block; determining an intra prediction mode of the current block on the basis of the prediction information; deriving a reference sample of the current block on the basis of the intra prediction mode and the reference line index information; and generating a prediction sample of the current block on the basis of the reference sample, wherein the intra prediction mode includes a non-directional intra prediction mode, and the reference sample is derived from among surrounding samples of the current block on the basis of the non-directional intra prediction mode and the reference line index information.

公开(公告)号：US20250030840A1

公开(公告)日：2025-01-23

申请号：US18905045

申请日：2024-10-02

Applicant: LG ELECTRONICS INC.

Inventor： Jangwon CHOI ,  Jin HEO ,  Sunmi YOO ,  Ling LI

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: A picture decoding method, performed by a decoding apparatus according to the present dislosure, comprises the steps of: when an intra-prediction mode of a chroma block is a cross-component linear model (CCLM) mode, deriving neighboring chroma reference samples with respect to the chroma block; deriving neighboring luma reference samples of a luma block corresponding to the chroma block and luma samples in the luma block; deriving down-sampled neighboring luma reference samples and downsampled luma samples by down sampling the neighboring luma reference samples and the luma samples, respectively; deriving a linear model parameter on the basis of the down-sampled neighboring luma reference samples and the neighboring chroma reference samples; generating prediction samples with respect to the chroma block on the basis of the linear model parameter and the down-sampled luma samples of the luma block; and reconstructing the chroma block on the basis of the prediction samples with respect to the chroma block.

公开(公告)号：US20240373014A1

公开(公告)日：2024-11-07

申请号：US18772834

申请日：2024-07-15

Applicant: LG Electronics Inc.

Inventor： Jungah CHOI ,  Jaehyun LIM ,  Jin HEO ,  Sunmi YOO ,  Ling LI ,  Jangwon CHOI ,  Seunghwan KIM

IPC: H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

Abstract: An image decoding method, which is performed by a decoding device according to the present document, is characterized by including: a step for receiving a bitstream including residual information about the current block; a step for deriving a maximum value of the number of context-encoding bins for context syntax elements coded on the basis of context included in the residual information; a step for entropy-decoding the context syntax elements on the basis of the maximum value; a step for deriving conversion coefficients for the current block on the basis of the entropy-decoded context syntax elements; a step for deriving a residual sample for the current block on the basis of the conversion coefficients; and a step for generating a reconstructed picture on the basis of the residual sample for the current block.