公开(公告)号：US10924730B2

公开(公告)日：2021-02-16

申请号：US16347422

申请日：2016-11-07

Applicant: LG ELECTRONICS INC.

Inventor： Naeri Park ,  Jungdong Seo ,  Jaehyun Lim ,  Junghak Nam

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/172 ,  H04N19/91 ,  H04N19/132 ,  H04N19/86 ,  H04N19/109

Abstract: According to the present invention, an image decoding method performed by a decoding device comprises the steps of: generating a first prediction block and a second prediction block of a current block; selecting a prediction block, to which a Wiener filter is to be applied, among the first prediction block and the second prediction block; deriving Wiener filter coefficients of the selected prediction block based on the first prediction block and the second prediction block; filtering the selected prediction block based on the derived Wiener filter coefficients; and generating a reconstructed block of the current block based on the filtered prediction block. According to the present invention, the overall coding efficiency can be improved by minimizing the difference between prediction blocks.

公开(公告)号：US10893267B2

公开(公告)日：2021-01-12

申请号：US16614705

申请日：2018-05-15

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon Jang ,  Jaehyun Lim

IPC: H04N19/117 ,  H04N19/159 ,  H04N19/593 ,  H04N19/86

Abstract: The present invention provides an image processing method on the basis of an intra prediction mode and an apparatus therefor. Specifically, a method for processing an image on the basis of an intra prediction mode may comprise the steps of: inducing a prediction mode applied to an intra prediction of a current block; determining whether a bi-directional intra prediction using reference samples located at both boundaries of the current block with respect to a prediction direction of the prediction mode is applied to the current block; and generating a prediction sample by using a reference sample neighboring the current block on the basis of the prediction mode, wherein when the bi-directional intra prediction is applied, boundary filtering for the current block is skipped.

公开(公告)号：US10798421B2

公开(公告)日：2020-10-06

申请号：US16715895

申请日：2019-12-16

Applicant: LG Electronics Inc.

Inventor： Seungwook Park ,  Jungsun Kim ,  Yongjoon Jeon ,  Joonyoung Park ,  Byeongmoon Jeon ,  Jaehyun Lim

IPC: H04N19/80 ,  H04N19/13 ,  H04N19/132 ,  H04N19/70 ,  H04N19/61 ,  H04N19/186 ,  H04N19/82 ,  H04N19/117 ,  H04N19/44 ,  H04N19/50 ,  H04N19/126 ,  H04N19/98

Abstract: The present invention relates to a method for encoding and decoding image information and to an apparatus using same, and the method for encoding the image information, according to the present invention, comprises the steps of: generating a recovery block; applying a deblocking filter to the recovery block; applying a sample adaptive offset (SAO) to the recovery block to which the deblocking filter is applied; and transmitting the image information including information on the SAO which is applied, wherein in the step of transmitting, information for specifying bands that cover a scope of a pixel value, to which a band off set is applied, is transmitted when the band offset is applied during the step of applying the SAO.

公开(公告)号：US10791329B2

公开(公告)日：2020-09-29

申请号：US16694279

申请日：2019-11-25

Applicant: LG Electronics Inc.

Inventor： Jaehyun Lim ,  Byeongmoon Jeon ,  Yongjoon Jeon ,  Seungwook Park ,  Jungsun Kim ,  Joonyoung Park ,  Hendry Hendry ,  Naeri Park ,  Chulkeun Kim

IPC: H04N19/122 ,  H04N19/136 ,  H04N19/50 ,  H04N19/96 ,  H04N19/91 ,  H04N19/44 ,  H04N19/174 ,  H04N19/176 ,  H04N19/13

Abstract: The present invention relates to an entropy decoding method which includes: generating context related to a bin that forms a codeword of a syntax element; and performing arithmetic decoding of the bin based on the context.

公开(公告)号：US20200304818A1

公开(公告)日：2020-09-24

申请号：US16898117

申请日：2020-06-10

Applicant: LG ELECTRONICS INC.

Inventor： Moonmo Koo ,  Mehdi Salehifar ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N19/44 ,  H04N19/70 ,  H04N19/625 ,  H04N19/159 ,  H04N19/176

Abstract: A method and a device for processing a video signal are disclosed. In particular, a method for decoding a video signal includes parsing a first syntax element indicating a primary transform kernel applied to a primary transform of a current block; determining whether a secondary transform is applicable to the current block based on the first syntax element; if the secondary transform is applicable to the current block, parsing a second syntax element indicating a secondary transform kernel applied to a secondary transform of the current block; deriving a secondary inverse-transformed block, by performing a secondary inverse-transform for a top-left specific region of the current block using a secondary transform kernel indicated by the second syntax element; and deriving a residual block of the current block, by performing a primary inverse-transform for the secondary inverse-transformed block using a primary transform kernel indicated by the first syntax element.

公开(公告)号：US10742985B2

公开(公告)日：2020-08-11

申请号：US16292037

申请日：2019-03-04

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Byeongmoon Jeon ,  Yongjoon Jeon ,  Seungwook Park ,  Jungsun Kim ,  Joonyoung Park ,  Jaehyun Lim ,  Naeri Park ,  Chulkeun Kim

IPC: H04N5/92 ,  H04N7/32 ,  G11B20/10 ,  H04N19/174 ,  G06K9/36 ,  H04N19/13 ,  H04N19/91 ,  H04N19/436 ,  H04N21/6336 ,  H04N19/124

Abstract: A video encoding method includes deriving entry point information specifying an entry point of a substream for a picture. The entry point information includes an offset syntax element when the number of the offset syntax elements is larger than 0, where the offset syntax element represents an entry point offset between two entry points. The entry point information includes a length syntax element when the number of the offset syntax elements is larger than 0, where the length syntax element represents a bits length for the offset syntax element. The offset syntax element represents the number of bytes between the two entry points. A value of the length syntax element plus one corresponds to the bits length of the offset syntax element. A value of the number syntax element corresponds to the number of offset syntax elements in the slice header.

公开(公告)号：US10715825B2

公开(公告)日：2020-07-14

申请号：US16256533

申请日：2019-01-24

Applicant: LG ELECTRONICS INC.

Inventor： Seungwook Park ,  Jaehyun Lim ,  Yongjoon Jeon ,  Hendry Hendry ,  Younghee Choi ,  Jaewon Sung ,  Jungsun Kim ,  Byeongmoon Jeon ,  Joonyoung Park

IPC: H04N19/513 ,  H04N19/593 ,  H04N19/11 ,  H04N19/573 ,  H04N19/58 ,  H04N19/56 ,  H04N19/105 ,  H04N19/503 ,  H04N19/139 ,  H04N19/176 ,  H04N19/517

Abstract: The present invention relates to the encoding and decoding of image information. According to the present invention, the decoding method comprises the steps of: entropy-decoding received information; performing inter prediction on a current block based on the entropy-decoded information; and restoring images by using the prediction results, wherein, in the inter prediction step, a skip mode or merge mode is applied to the current block and movement information of the current block may be determined based on the movement information of a neighboring block of the current block.

公开(公告)号：US10659801B2

公开(公告)日：2020-05-19

申请号：US16087963

申请日：2016-03-24

Applicant: LG Electronics Inc.

Inventor： Naeri Park ,  Jaehyun Lim ,  Junghak Nam

IPC: H04N21/235 ,  H04N19/119 ,  H04N19/513 ,  H04N19/103 ,  H04N19/44 ,  H04N19/537 ,  H04N19/176

Abstract: A video decoding method performed by a decoding apparatus comprises: deriving control points (CPs) for the current block; obtaining motion vectors for the CPs; deriving a motion vector of a sub-block or a sample unit in the current block on the basis of the obtained motion vectors; deriving a prediction sample for the current block on the basis of the derived motion vector; and generating a reconstruction sample on the basis of the prediction sample. The method enables effective performance of inter prediction through the motion vectors (transformation prediction), not only when an image in the current block is moved in a plane, but also when the image in the current block is rotated, zoomed in, zoomed out, or transformed into a parallelogram. Accordingly, the amount of data for the residual signal for the current block can be eliminated or reduced, and the overall coding efficiency can be improved.

公开(公告)号：US10602141B2

公开(公告)日：2020-03-24

申请号：US15768403

申请日：2016-01-25

Applicant: LG ELECTRONICS INC.

Inventor： Kyuwoon Kim ,  Jaehyun Lim ,  Naeri Park ,  Jungdong Seo

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/503 ,  H04N19/82 ,  H04N19/176 ,  H04N19/513

Abstract: An inter prediction method according to the present invention, which is performed by a decoding apparatus, comprises the steps of: acquiring prediction-related information and residual information from a received bitstream; performing inter prediction on a current block on the basis of the prediction-related information so as to generate prediction samples; generating a list of Wiener filter candidates on the basis of spatially neighboring blocks of the current block, and deriving Wiener filter coefficients for the current block on the basis of candidate blocks in the list of the Wiener filter candidates; filtering the prediction samples on the basis of the derived Wiener filter coefficients; deriving residual samples for the current block on the basis of the residual information; and generating a reconstructed picture on the basis of the filtered prediction samples and the residual samples. The present invention can reduce the amount of data for a residual signal and improve coding efficiency.

公开(公告)号：US10531092B2

公开(公告)日：2020-01-07

申请号：US16244848

申请日：2019-01-10

Applicant: LG Electronics Inc.

Inventor： Jaehyun Lim ,  Byeongmoon Jeon ,  Yongjoon Jeon ,  Seungwook Park ,  Jungsun Kim ,  Joonyoung Park ,  Hendry Hendry ,  Naeri Park ,  Chulkeun Kim

IPC: H04N19/13 ,  H04N19/136 ,  H04N19/50 ,  H04N19/96 ,  H04N19/91 ,  H04N19/44 ,  H04N19/174 ,  H04N19/176

Abstract: The present invention relates to an entropy decoding method which includes: generating context related to a bin that forms a codeword of a syntax element; and performing arithmetic decoding of the bin based on the context.