公开(公告)号：US20180131943A1

公开(公告)日：2018-05-10

申请号：US15570139

申请日：2016-04-27

Applicant: LG Electronics Inc.

Inventor： Naeri PARK ,  Seungwook PARK ,  Jaehyun LIM ,  Chulkeun KIM ,  Jungdong SEO ,  Sunmi YOO ,  Junghak NAM

IPC: H04N19/159 ,  H04N19/139 ,  H04N19/126 ,  H04N19/122 ,  H04N19/96 ,  H04N19/109

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/109 ,  H04N19/122 ,  H04N19/126 ,  H04N19/139 ,  H04N19/513 ,  H04N19/537 ,  H04N19/86 ,  H04N19/96

Abstract: The present invention relates to method and device for decoding a bitstream for a video signal, the method comprising the steps of: obtaining a predicted value for a current block on the basis of a moving vector of the current block; and restoring the current block on the basis of the predicted value for the current block. In case a particular condition is satisfied, the step of obtaining the predicted value for the current block comprises: obtaining of a first predicted value by applying, to an area located at a particular boundary of the current block, a motion vector of a neighboring block adjacent to the area; obtaining of a second predicted value by applying a motion vector of the current block to the area; and obtaining of a weighted sum by applying a first weight to the first predicted value and by applying a second weight to the second predicted value.

公开(公告)号：US20170150178A1

公开(公告)日：2017-05-25

申请号：US15319335

申请日：2015-09-25

Applicant: LG ELECTRONICS INC.

Inventor： Junghak NAM ,  Sehoon YEA ,  Jungdong SEO ,  Sunmi YOO

IPC: H04N19/597 ,  H04N19/124 ,  H04N19/44 ,  H04N19/51 ,  H04N19/172

CPC classification number: H04N19/597 ,  H04N19/124 ,  H04N19/17 ,  H04N19/172 ,  H04N19/44 ,  H04N19/51

Abstract: The present invention relates to 3D video coding device and method. A decoding method, according to the present invention, provides a 3D video decoding method. A decoding method comprises the steps of: obtaining a disparity value on the basis of a reference view and a predetermined value; deriving movement information of a current block in a depth picture on the basis of the disparity value; and generating a prediction sample of the current block on the basis of the movement information, wherein the reference view is a view of a reference picture in a reference picture list. According to the present invention, even when a base view cannot be accessed, a disparity vector can be derived on the basis of an available reference view index in a decoded picture buffer (DPB), and coding efficiency can be enhanced.

公开(公告)号：US20160295240A1

公开(公告)日：2016-10-06

申请号：US15028806

申请日：2014-10-20

Applicant: LG ELECTRONICS INC.

Inventor： Taesup KIM ,  Sehoon YEA ,  Jin HEO ,  Jungdong SEO ,  Sunmi YOO ,  Junghak NAM

IPC: H04N19/597 ,  H04N19/176 ,  H04N19/513 ,  H04N19/105 ,  H04N19/139

CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/119 ,  H04N19/137 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513 ,  H04N19/521

Abstract: The present invention relates to a method for constituting a merge candidate list by using a view synthesis prediction (VSP) and the like in multi-view video coding. The method for constituting the merge candidate list according to the present invention comprises the steps of: determining a prediction mode for a current block; inducing, as a merge candidate, motion information from neighboring blocks of the current block when the prediction mode for the current block is a merge mode or a skip mode; and constituting the merge candidate list by using the motion information of the neighboring blocks and the deep parity information induced from the neighboring blocks of the current block.

Abstract translation: 本发明涉及一种通过在多视点视频编码中使用视图合成预测（VSP）等来构成合并候选列表的方法。 根据本发明的用于构成合并候选列表的方法包括以下步骤：确定当前块的预测模式; 当当前块的预测模式是合并模式或跳过模式时，将来自当前块的相邻块的运动信息作为合并候选; 并通过使用相邻块的运动信息和从当前块的相邻块引起的深奇偶校验信息来构成合并候选列表。

公开(公告)号：US20250126286A1

公开(公告)日：2025-04-17

申请号：US18934064

申请日：2024-10-31

Applicant: LG ELECTRONICS INC.

Inventor： Jaehyun LIM ,  Naeri PARK ,  Jungdong SEO ,  Junghak NAM

IPC: H04N19/51 ,  H04N19/176 ,  H04N19/513 ,  H04N19/523 ,  H04N19/53 ,  H04N19/70

Abstract: Disclosed are an inter prediction mode-based image processing method and an apparatus therefor. Particularly, a method for processing an image on the basis of inter prediction may comprise the steps of: determining whether a motion vector scale adaptation is applied to a block; up-scaling a down-scaled MVD(Motion Vector Difference) when the motion vector scale adaptation is applied to the block; deriving a MV(Motion Vector) for the block, using the up-scaled MVD and a MVP(Motion Vector Predictor); and generating a predictive block of the block, using the derived MV.

公开(公告)号：US20240007646A1

公开(公告)日：2024-01-04

申请号：US18368336

申请日：2023-09-14

Applicant: LG Electronics Inc.

Inventor： Naeri PARK ,  Junghak NAM ,  Jaehyun LIM ,  Seunghwan KIM ,  Jungdong SEO ,  Jaeho LEE ,  Hyeongmoon JANG

IPC: H04N19/139 ,  H04N19/105 ,  H04N19/109 ,  H04N19/176 ,  H04N19/503

CPC classification number: H04N19/139 ,  H04N19/105 ,  H04N19/109 ,  H04N19/176 ,  H04N19/503

Abstract: An image decoding method performed by a decoding apparatus includes the operations: deriving a correspondence block corresponding to the current block of the current picture, the correspondence block being located in a co-located picture; deriving a movement vector of the correspondence block; scaling the movement vector of the correspondence block based on a first temporal distance and second temporal distance, the first temporal distance being the difference between the POC values of the co-located picture and POC values of the reference picture of the correspondence block, and the second temporal distance being the difference between the POC values of the co-located picture and POC values of the current picture containing the current block; deriving the movement vector updated based on the scaled movement vector and location of the current block; and deriving a movement vector of the current block based on the updated movement vector.

公开(公告)号：US20220264141A1

公开(公告)日：2022-08-18

申请号：US17734959

申请日：2022-05-02

Applicant: LG ELECTRONICS INC.

Inventor： Jungdong SEO ,  Jaehyun LIM

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/44 ,  H04N19/109 ,  H04N19/139 ,  H04N19/13 ,  H04N19/172 ,  H04N19/91

Abstract: An image decoding method performed by a decoding device according to the present invention comprises the steps of: acquiring information on inter prediction of a target block through a bit stream; deriving motion information of the target block on the basis of the information on inter prediction; deriving a prediction sample by performing inter prediction for the target block on the basis of the motion information; generating a reconstruction block on the basis of the prediction sample; deriving modified motion information of the target block on the basis of the reconstruction block; and updating the motion information of the target block on the basis of the modified motion information. According to the present invention, modified motion information of the target block can be calculated, and the motion information of the target block can be updated on the basis of the modified motion information, so that the overall coding efficiency can be improved.

公开(公告)号：US20200296414A1

公开(公告)日：2020-09-17

申请号：US16767925

申请日：2018-11-28

Applicant: LG ELECTRONICS INC.

Inventor： Naeri PARK ,  Seethal PALURI ,  Junghak NAM ,  Jungdong SEO ,  Jaeho LEE ,  Hyeongmoon JANG

IPC: H04N19/56 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186

Abstract: An image decoding method that is performed by a decoding apparatus according to the present disclosure comprises the steps of: obtaining information regarding inter-prediction of a current block via a bitstream; forming an MVP candidate list based on neighbouring blocks of the current block; deriving costs with respect to MVP candidates that are included in the MVP candidate list; deriving a revised MVP candidate list based on the costs with respect to the MVP candidates; deriving MVP of the current block based on the revised MVP candidate list; deriving a motion vector of the current block based on the MVP and MVD of the current block; and performing prediction on the current block based on a reference picture index and the motion vector of the current block, wherein the information regarding inter-prediction includes the reference picture index and the MVD.

公开(公告)号：US20200162743A1

公开(公告)日：2020-05-21

申请号：US16628420

申请日：2018-03-14

Applicant: LG Electronics Inc.

Inventor： Naeri PARK ,  Junghak NAM ,  Seunghwan KIM ,  Jungdong SEO ,  Jaeho LEE ,  Hyeongmoon JANG

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/513 ,  H04N19/105 ,  H04N19/139

Abstract: Disclosed herein are an inter prediction mode-based image processing method and an apparatus therefor. Specifically, a method for processing an image based on an inter prediction mode may include: generating a temporary candidate list by using a spatial neighbor block or temporal neighbor block of a current block; calculating a cost for each candidate in the temporary candidate list by using a template of the current block; generating a final candidate list by rearranging candidates of the temporary candidate list based on the calculated cost; decoding a merge index indicating a specific candidate in the final candidate list; and generating a prediction block of the current block by using motion information of a candidate indicated by the merge index.

公开(公告)号：US20200154124A1

公开(公告)日：2020-05-14

申请号：US16628602

申请日：2018-06-22

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho LEE ,  Jungdong SEO ,  Jaehyun LIM

IPC: H04N19/503 ,  H04N19/176 ,  H04N19/105 ,  H04N19/44

Abstract: An image decoding method based on an inter prediction is disclosed. The image decoding method according to an embodiment of the present disclosure includes deriving first motion information of a current block by applying template matching on the current block; determining whether to perform the template matching in subblock units of the current block; if it is determined not to perform the template matching in the subblock units, generating a prediction block of the current block by using the first motion information; if it is determined to perform the template matching in the subblock units, deriving second motion information in subblock units by performing the template matching on a subblock of the current block; and generating a prediction block of the current block by using the derived first motion information and the derived second motion information. The template matching is a mode deriving motion information minimizing a difference value between a neighbor template region of the current block and a neighbor template region of a reference block of a reference picture.

公开(公告)号：US20180302638A1

公开(公告)日：2018-10-18

申请号：US15769261

申请日：2016-10-24

Applicant: LG ELECTRONICS INC.

Inventor： Jungdong SEO ,  Jaehyun LIM ,  Naeri PARK

IPC: H04N19/51 ,  H04N19/46 ,  H04N19/119 ,  H04N19/137 ,  H04N19/176 ,  H04N19/174 ,  H04N19/172 ,  H04N19/70

CPC classification number: H04N19/51 ,  H04N19/119 ,  H04N19/137 ,  H04N19/157 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: Disclosed are a method for encoding/decoding an image and a device therefor. Particularly, a method by which a decoding device decodes an image comprises the steps of: deriving a part mode of a coding block within a predefined part mode set; decoding a motion parameter in a prediction block unit partitioned from the coding block according to the part mode; and generating a predicted block by using the motion parameter decoded in the prediction block unit, wherein the part mode set includes an asymmetric 4-block part mode, the asymmetric 4-block part mode enables four prediction blocks to be partitioned from the coding block, and a horizontal partition and/or a vertical partition can be defined as an asymmetric partition form.