公开(公告)号：US11677961B2

公开(公告)日：2023-06-13

申请号：US17377005

申请日：2021-07-15

Applicant: LG ELECTRONICS INC.

Inventor： Yong Joon Jeon ,  Seung Wook Park ,  Jung Sun Kim ,  Joon Young Park ,  Byeong Moon Jeon ,  Jae Hyun Lim

IPC: G06V30/00 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593 ,  H04N19/117 ,  H04N19/86 ,  H04N19/00 ,  H04N19/82 ,  H04N19/105

CPC classification number: H04N19/159 ,  H04N19/00 ,  H04N19/117 ,  H04N19/176 ,  H04N19/593 ,  H04N19/86 ,  H04N19/105 ,  H04N19/82

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：US11611772B2

公开(公告)日：2023-03-21

申请号：US17487466

申请日：2021-09-28

Applicant: LG ELECTRONICS INC.

Inventor： Seung Wook Park ,  Jung Sun Kim ,  Yong Hee Choi ,  Byeong Moon Jeon ,  Joon Young Park

IPC: H04N11/02 ,  H04N19/51 ,  H04N19/18 ,  H04N19/176 ,  H04N19/172 ,  H04N19/61 ,  H04N19/11 ,  H04N19/107 ,  H04N19/44 ,  H04N19/86

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. Some implementations may include obtaining a macroblock type, when a macroblock includes the intra prediction coded sub-macroblock and the inter prediction coded sub-macroblock based on the macroblock type, obtaining prediction mode flag information indicating whether the sub-macroblock is the intra prediction coded or the inter prediction coded, and obtaining a prediction value of the sub-macroblock. Accordingly, implementations disclosed herein may 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：US11240520B2

公开(公告)日：2022-02-01

申请号：US17107083

申请日：2020-11-30

Applicant: LG ELECTRONICS INC.

Inventor： Joon Young Park ,  Seung Wook Park ,  Jung Sun Kim ,  Young Hee Choi ,  Byeong Moon Jeon

IPC: H04N19/44 ,  H04N19/70 ,  H04N19/196 ,  H04N19/11 ,  H04N19/176 ,  H04N19/587 ,  H04N19/184 ,  H04N19/61

Abstract: The present invention includes obtaining block type identification information on a partition of the current macroblock when the current macroblock is intra-mixed, specifying a bock type of the current macroblock based on the block type identification information, obtaining an intra prediction mode of the current macroblock according to the block type of the partition of the current macroblock, and predicting the current macroblock using the intra prediction mode and a pixel value of a neighboring block.

公开(公告)号：US11184640B2

公开(公告)日：2021-11-23

申请号：US17006341

申请日：2020-08-28

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

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：US20210344933A1

公开(公告)日：2021-11-04

申请号：US17377005

申请日：2021-07-15

Applicant: LG ELECTRONICS INC.

Inventor： Yong Joon JEON ,  Seung Wook Park ,  Jung Sun Kim ,  Joon Young Park ,  Byeong Moon Jeon ,  Jee Hyun Lim

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

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 anode 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：US20200053375A1

公开(公告)日：2020-02-13

申请号：US16658628

申请日：2019-10-21

Applicant: LG ELECTRONICS INC.

Inventor： Seung Wook Park ,  Jung Sun Kim ,  Yong 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. Some implementations may include obtaining a macroblock type, when a macroblock includes the intra prediction coded sub-macroblock and the inter prediction coded sub-macroblock based on the macroblock type, obtaining prediction mode flag information indicating whether the sub-macroblock is the intra prediction coded or the inter prediction coded, and obtaining a prediction value of the sub-macroblock. Accordingly, implementations disclosed herein may 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：US10469844B2

公开(公告)日：2019-11-05

申请号：US15797895

申请日：2017-10-30

Applicant: LG ELECTRONICS INC.

Inventor： Yong Joon Jeon ,  Seung Wook Park ,  Jung Sun Kim ,  Joon Young Park ,  Byeong Moon Jeon ,  Jae Hyun Lim

IPC: G06K9/36 ,  H04N19/159 ,  H04N19/00 ,  H04N19/117 ,  H04N19/593 ,  H04N19/86 ,  H04N19/176 ,  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：US10405001B2

公开(公告)日：2019-09-03

申请号：US15993229

申请日：2018-05-30

Applicant: LG Electronics Inc.

Inventor： Jung Sun Kim ,  Seung Wook Park ,  Young Hee Choi ,  Jaewon Sung ,  Byeong Moon Jeon ,  Joon Young Park

IPC: H04N19/61 ,  H04N19/625 ,  H04N19/149 ,  H04N19/129 ,  H04N19/18 ,  H04N19/119 ,  H04N19/122 ,  H04N19/176

Abstract: The present invention relates to a method for decoding a video signal, comprising the steps of: acquiring a transform size flag of the current macroblock from a video signal; checking the number of non-zero transform coefficients at each pixel position in a first transform block which corresponds to the transform size flag; changing a scan order of the first transform block by prioritizing the position of the pixel having the greatest number of the non-zero transform coefficients in the first transform block; determining the number of the non-zero transform coefficients at each pixel position in a second transform block, and setting the changed scan order of the first transform block as an initialized scan order of the second transform block; adding the number of the non-zero transform coefficients at each pixel position in the first transform block and the number of the non-zero transform coefficients at each pixel position in the second transform block, and changing the scan order of the second transform block by prioritizing the position of the pixel having the greatest number of the non-zero transform coefficients; and decoding the transform coefficients arranged in the scan order changed in the previous step, wherein the first transform block and the second transform block have sizes corresponding to the transform size flag, and are contained in the current macroblock.

公开(公告)号：US10136158B2

公开(公告)日：2018-11-20

申请号：US15859132

申请日：2017-12-29

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

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：US20180278966A1

公开(公告)日：2018-09-27

申请号：US15997464

申请日：2018-06-04

Applicant: LG Electronics Inc.

Inventor： Jae Hyun LIM ,  Seung Wook Park ,  Young Joon Jeon ,  Chul Keun Kim ,  Young Hee Choi ,  Jung Sun Kim ,  Nae Ri Park ,  Hendry Hendry ,  Byeong Moon Jeon ,  Joon Young Park

IPC: H04N19/91 ,  H04N19/174 ,  H04N19/70 ,  H04N19/52 ,  H04N19/184 ,  H04N19/463 ,  H04N19/13 ,  H04N19/159 ,  H04N19/154 ,  H04N19/146 ,  H04N19/593

CPC classification number: H04N19/91 ,  H04N19/13 ,  H04N19/146 ,  H04N19/154 ,  H04N19/159 ,  H04N19/174 ,  H04N19/184 ,  H04N19/463 ,  H04N19/52 ,  H04N19/593 ,  H04N19/70

Abstract: The present invention relates to an entropy decoding method and to a decoding apparatus using same. The entropy decoding method according to the present invention comprises: a step of decoding a bin of a syntax element; and a step of acquiring information on the syntax element based on the decoded bin. In the step of decoding the bin, context-based decoding or bypass decoding is performed for each bin of the syntax element.