公开(公告)号：US12167023B2

公开(公告)日：2024-12-10

申请号：US18490340

申请日：2023-10-19

Applicant: JVCKENWOOD Corporation

Inventor： Hiroya Nakamura ,  Shigeru Fukushima ,  Hideki Takehara

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/139 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/196 ,  H04N19/463 ,  H04N19/52 ,  H04N19/573 ,  H04N19/70

Abstract: A prediction information deriving unit derives the inter-prediction information candidates from inter-prediction information of a prediction block neighboring to a coding target prediction block or a prediction block present at the same position as or near the coding target prediction block in a coded picture at a temporally different position from the coding target prediction block. A candidate supplementing unit supplements inter-prediction information candidates having the same prediction mode, reference index, and motion vector until the number of inter-prediction information candidates reaches the designated number of candidates when the number of inter-prediction information candidates is smaller than the designated number of candidates.

公开(公告)号：US11785211B2

公开(公告)日：2023-10-10

申请号：US17962429

申请日：2022-10-07

Applicant: JVCKENWOOD Corporation

Inventor： Hideki Takehara ,  Hiroya Nakamura ,  Satoru Sakazume ,  Shigeru Fukushima ,  Toru Kumakura ,  Hiroyuki Kurashige

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

Abstract: Technology for improving coding efficiency by performing a block split suitable for picture coding and decoding is provided. A device includes a coding information storage unit configured to add the inter prediction information used in the inter prediction to a history-based motion vector predictor candidate list; a history-based motion vector predictor candidate derivation unit configured to derive history-based motion vector predictor candidates from the history-based motion vector predictor candidate list; and a history-based merging candidate derivation unit configured to derive history-based merging candidates from the history-based motion vector predictor candidate list, wherein the history-based motion vector predictor candidate derivation unit and the history-based merging candidate derivation unit set candidates included in the history-based motion vector predictor candidate list as the history-based motion vector predictor candidates or the history-based merging candidates with reference to the candidates included in the history-based motion vector predictor candidate list in orders different from each other.

公开(公告)号：US11503278B2

公开(公告)日：2022-11-15

申请号：US17269971

申请日：2019-12-20

Applicant: JVCKENWOOD Corporation

Inventor： Shigeru Fukushima ,  Hiroya Nakamura ,  Toru Kumakura ,  Hideki Takehara ,  Satoru Sakazume ,  Hiroyuki Kurashige

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/159 ,  H04N19/46

Abstract: Technology for improving coding efficiency by performing a block split suitable for picture coding and decoding is provided. A moving-picture coding device for performing an affine transform in units of coding blocks includes an affine inheritance merging candidate derivation unit configured to derive an affine inheritance merging candidate for inheriting an affine model of blocks neighboring a coding target block in a space domain, an affine construction merging candidate derivation unit configured to derive an affine construction merging candidate from a plurality of motion information elements of blocks neighboring the coding target block in a space or time domain, and an affine fixation merging candidate derivation unit configured to derive an affine fixation merging candidate in which motion information of an affine control point is fixed. A motion vector of each affine control point is fixed to (0, 0) in the affine fixation merging candidate.

公开(公告)号：US10979710B2

公开(公告)日：2021-04-13

申请号：US16665031

申请日：2019-10-28

Applicant: JVCKENWOOD Corporation

Inventor： Shigeru Fukushima ,  Hiroya Nakamura ,  Toru Kumakura

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/186 ,  H04N19/50 ,  H04N19/96

Abstract: Provided is a picture encoding device that divides a picture into blocks and performs encoding for each of the divided blocks. A primary signal block divider divides a primary signal of the picture into rectangles having a predetermined size, and generates a primary signal block. A secondary signal block divider divides a secondary signal of the picture into rectangles having a predetermined size, and generates a secondary signal block. A primary signal predictor predicts a primary signal, and a secondary signal predictor predicts a secondary signal. The secondary signal predictor can perform inter prediction of predicting a secondary signal from an encoded primary signal, and the inter prediction is restricted based on at least one of a size of the primary signal block and a size of the secondary signal block.

公开(公告)号：US12143572B2

公开(公告)日：2024-11-12

申请号：US18209311

申请日：2023-06-13

Applicant: JVCKENWOOD Corporation

Inventor： Shigeru Fukushima ,  Hiroya Nakamura ,  Toru Kumakura ,  Hideki Takehara ,  Satoru Sakazume ,  Hiroyuki Kurashige

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: Technology for improving coding efficiency by performing a block split suitable for picture coding and decoding is provided. A moving-picture coding device for performing an affine transform in units of coding blocks includes an affine inheritance merging candidate derivation unit configured to derive an affine inheritance merging candidate for inheriting an affine model of blocks neighboring a coding target block in a space domain, an affine construction merging candidate derivation unit configured to derive an affine construction merging candidate from a plurality of motion information elements of blocks neighboring the coding target block in a space or time domain, and an affine fixation merging candidate derivation unit configured to derive an affine fixation merging candidate in which motion information of an affine control point is fixed. A motion vector of each affine control point is fixed to (0, 0) in the affine fixation merging candidate.

公开(公告)号：US12088798B2

公开(公告)日：2024-09-10

申请号：US18210559

申请日：2023-06-15

Applicant: JVCKENWOOD Corporation

Inventor： Shigeru Fukushima ,  Hiroya Nakamura ,  Satoru Sakazume ,  Toru Kumakura ,  Hiroyuki Kurashige ,  Hideki Takehara

IPC: H04N19/107 ,  H04N19/105 ,  H04N19/137 ,  H04N19/176 ,  H04N19/423

CPC classification number: H04N19/107 ,  H04N19/105 ,  H04N19/137 ,  H04N19/176 ,  H04N19/423

Abstract: In order to provide efficient coding technology with a low load, a picture decoding device includes a spatial motion information candidate derivation unit configured to derive a spatial motion information candidate from motion information of a block neighboring a decoding target block in a space domain, a temporal motion information candidate derivation unit configured to derive a temporal motion information candidate from motion information of a block neighboring a decoding target block in a time domain, and a history-based motion information candidate derivation unit configured to derive a history-based motion information candidate from a memory for retaining motion information of a decoded block, wherein the temporal motion information candidate is compared with neither the spatial motion information candidate nor the history-based motion information candidate with respect to the motion information.

公开(公告)号：US11979562B2

公开(公告)日：2024-05-07

申请号：US18206771

申请日：2023-06-07

Applicant: JVCKENWOOD Corporation

Inventor： Hideki Takehara ,  Hiroya Nakamura ,  Satoru Sakazume ,  Shigeru Fukushima ,  Toru Kumakura ,  Hiroyuki Kurashige

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

Abstract: A picture coding device for coding a moving picture using inter prediction based on inter prediction information in units of blocks into which each picture of moving pictures is divided and forming a bitstream, the picture coding device includes a coding information storage unit configured to add the inter prediction information used in the inter prediction to a history-based motion vector predictor candidate list in a FIFO scheme, a history-based motion vector predictor candidate derivation unit configured to derive history-based motion vector predictor candidates from the history-based motion vector predictor candidate list and add the history-based motion vector predictor candidates to a motion vector predictor candidate list as a motion vector predictor candidate, and a history-based merging candidate derivation unit configured to derive history-based merging candidates from the history-based motion vector predictor candidate list and add the history-based merging candidates to a merging candidate list as a merging candidate.

公开(公告)号：US11936849B2

公开(公告)日：2024-03-19

申请号：US17552389

申请日：2021-12-16

Applicant: JVCKENWOOD Corporation

Inventor： Hideki Takehara ,  Hiroya Nakamura ,  Satoru Sakazume ,  Shigeru Fukushima ,  Toru Kumakura ,  Hiroyuki Kurashige

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

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: A picture coding device includes: a block vector candidate derivation unit that derives block vector candidates of a target block in a target picture from coding information stored in coding information storage memory; a selector that selects a selected block vector from the block vector candidates; and a reference position correction unit that performs a correction regarding a reference block to be referred to by the selected block vector so that a reference position of the reference block is to be corrected to refer to an inside of a referenceable region, in which a decoded sample in the target picture is acquired from decoded picture memory as a prediction value of the target block based on the reference position of the reference block.

公开(公告)号：US11870998B2

公开(公告)日：2024-01-09

申请号：US17468776

申请日：2021-09-08

Applicant: JVCKENWOOD Corporation

Inventor： Hiroyuki Kurashige ,  Hideki Takehara ,  Hiroya Nakamura ,  Satoru Sakazume ,  Shigeru Fukushima ,  Toru Kumakura

IPC: H04N19/139 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/139 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46

Abstract: A normal merge mode derivation unit further includes a merging candidate selector structured to add a merge motion vector difference defined by a direction index indicating a direction and a distance index indicating a distance to a motion vector of a merging candidate list, and select one candidate from the merging candidate list as a selected merging candidate on the basis of a merge index, in which, when the motion vector of the selected merging candidate is smaller than a distance indicated by an arbitrary index of the distance index, the merging candidate selector sets a direction of a merge motion vector difference defined by the distance index indicating a larger distance than the motion vector of the selected merging candidate as a diagonal direction, or changes the distance indicated by the distance index.

公开(公告)号：US11856190B2

公开(公告)日：2023-12-26

申请号：US17962421

申请日：2022-10-07

Applicant: JVCKENWOOD Corporation

Inventor： Shigeru Fukushima ,  Hiroya Nakamura ,  Satoru Sakazume ,  Toru Kumakura ,  Hiroyuki Kurashige ,  Hideki Takehara

IPC: H04N19/107 ,  H04N19/105 ,  H04N19/137 ,  H04N19/176 ,  H04N19/423

CPC classification number: H04N19/107 ,  H04N19/105 ,  H04N19/137 ,  H04N19/176 ,  H04N19/423

Abstract: In order to provide efficient coding technology with a low load, a picture decoding device includes a spatial motion information candidate derivation unit configured to derive a spatial motion information candidate from motion information of a block neighboring a decoding target block in a space domain, a temporal motion information candidate derivation unit configured to derive a temporal motion information candidate from motion information of a block neighboring a decoding target block in a time domain, and a history-based motion information candidate derivation unit configured to derive a history-based motion information candidate from a memory for retaining motion information of a decoded block, wherein the temporal motion information candidate is compared with neither the spatial motion information candidate nor the history-based motion information candidate with respect to the motion information.