公开(公告)号：US20220141465A1

公开(公告)日：2022-05-05

申请号：US17578402

申请日：2022-01-18

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Geonjung KO ,  Dongcheol KIM ,  Jaehong JUNG ,  Juhyung SON ,  Jinsam KWAK

IPC: H04N19/119 ,  H04N19/186 ,  H04N19/176 ,  H04N19/70

Abstract: This video signal decoding device includes a processor, and the processor is characterized by: determining a result value that indicates the direction for dividing the current transform block (TB) on the basis of preset conditions; dividing the current transform block into a plurality of transform blocks on the basis of the result value; and decoding a video signal by using the plurality of transform blocks, wherein the preset conditions include a condition pertaining to a color component of the current transform block.

公开(公告)号：US20220007027A1

公开(公告)日：2022-01-06

申请号：US17282745

申请日：2019-10-14

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Dongcheol KIM ,  Geonjung KO ,  Jaehong JUNG ,  Juhyung SON ,  Jinsam KWAK

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

Abstract: The video signal processing method comprises the steps of: downsampling luma components of reconstructed blocks adjacent to a current block; acquiring a maximum luma value from among the downsampled luma components based on a first index; acquiring a next-highest maximum luma value from among the downsampled luma components based on a second index; acquiring a maximum average luma value based on an average value of the maximum luma value and the next-highest maximum luma value; acquiring a next-lowest minimum luma value from among the downsampled luma components based on a third index; acquiring a minimum luma value from among the downsampled luma components based on a fourth index; and acquiring a minimum average luma value based on the next-lowest minimum luma value and the minimum luma value.

公开(公告)号：US20210243476A1

公开(公告)日：2021-08-05

申请号：US17234688

申请日：2021-04-19

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Geonjung KO ,  Dongcheol KIM ,  Juhyung SON ,  Jaehong JUNG ,  Jinsam KWAK

IPC: H04N19/70 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52

Abstract: A video signal processing method may comprise the steps of: acquiring a first syntax element indicating whether a subblock-based merging mode is applied to a current block; acquiring a second syntax element indicating whether a merging mode using motion vector difference is applied to the current block, when the first syntax element indicates that the subblock-based merging mode is not applied to the current block; and acquiring a third syntax element indicating a candidate to be used in inter-prediction for the current block, among candidates contained in a mergence candidate list for the current block, when the second syntax element indicates that the merging mode using motion vector difference is applied to the current block.

公开(公告)号：US20210235072A1

公开(公告)日：2021-07-29

申请号：US17227839

申请日：2021-04-12

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Geonjung KO ,  Dongcheol KIM ,  Juhyung SON ,  Jaehong JUNG ,  Jinsam KWAK

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/70 ,  H04N19/186 ,  H04N19/176

Abstract: A video signal processing method comprises the steps of: receiving information for prediction of a current block; determining whether or not a merge mode is applied to the current block on the basis of the information for prediction; when a merge mode is applied to the current block, obtaining a first syntax element indicating whether or not a combined prediction is applied to the current block, wherein the combined prediction indicates a prediction mode that combines inter-prediction and intra-prediction; generating an inter-prediction block and an intra-prediction block of the current block when the first syntax element indicates that the combined prediction is applied to the current block; and generating a combined prediction block of the current block by weighted-summing the inter-prediction block and the intra-prediction block.

公开(公告)号：US20210227213A1

公开(公告)日：2021-07-22

申请号：US17223419

申请日：2021-04-06

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Dongcheol KIM ,  Geonjung KO ,  Jaehong JUNG ,  Juhyung SON ,  Jinsam KWAK

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

Abstract: A video signal processing method comprises the steps of: obtaining information, from a received bitstream, indicating whether an MPM is used in a current block; when at least one of the intra prediction mode of the left block of the current block or the intra prediction mode of the upper block of the current block is an angular mode, generating an MPM list using only the angular mode; determining the intra prediction mode on the basis of the MPM list; and predicting the current block on the basis of the determined intra prediction mode.

公开(公告)号：US20210076070A1

公开(公告)日：2021-03-11

申请号：US17088110

申请日：2020-11-03

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Jaehong JUNG ,  Juhyung SON ,  Dongcheol KIM ,  Geonjung KO ,  Jinsam KWAK

IPC: H04N19/61 ,  H04N19/70 ,  H04N19/176 ,  H04N19/18 ,  H04N19/132

Abstract: A video signal decoding apparatus comprising a processor, wherein the processor is configured to: parse a syntax element related to a secondary transform of a coding unit from a bitstream of a video signal when one or more preset conditions are satisfied; check whether or not the secondary transform is applied to a transform block included in the coding unit based on the parsed syntax element; obtain one or more inverse transform coefficients for a first sub-block by performing an inverse secondary transform based on one or more coefficients of the first sub-block which is one of one or more sub-blocks constituting the transform block when the secondary transform is applied to the transform block; and obtain a residual sample for the transform block by performing an inverse primary transform based on the one or more inverse transform coefficients.

公开(公告)号：US20210051329A1

公开(公告)日：2021-02-18

申请号：US16964967

申请日：2019-01-25

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Geonjung KO ,  Juhyung SON ,  Dongcheol KIM ,  Jinsam KWAK

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

Abstract: A video signal processing method and apparatus for encoding or decoding a video signal is disclosed. More particularly, a video signal processing method and a video signal processing apparatus using the same are disclosed, wherein a method for processing a video signal comprises the steps of: obtaining a set of control point motion vectors for prediction of a current block; obtaining the motion vector of each sub-block of the current block using control point motion vectors of the set of control point motion vectors; obtaining a predictor of the each sub-block of the current block using the motion vectors of the each sub-block; obtaining a predictor of the current block by combining predictors of the each sub-block; and restoring the current block using the predictor of the current block.