公开(公告)号：US12225229B2

公开(公告)日：2025-02-11

申请号：US17552397

申请日：2021-12-16

Applicant: JVCKENWOOD Corporation

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

IPC: H04N19/593 ,  H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70

Abstract: A picture coding device includes: a block vector candidate derivation unit that derives block vector candidates of a coding target block in a coding target picture from coding information stored in a coding information storage memory; a selector that selects a selected block vector from the block vector candidates; a storage that stores coded pictures of a predetermined number of intra block copy standard blocks immediately before the coding target block; and a reference region boundary correction unit that removes a coded picture of one intra block copy standard block in the storage from a referenceable region after completion of a coding process of the coding target block, and determines whether an upper left position and a lower right position of a reference block indicated by the selected block vector are both included in the referenceable region.

公开(公告)号：US12022104B2

公开(公告)日：2024-06-25

申请号：US17356714

申请日：2021-06-24

Applicant: JVCKENWOOD Corporation

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

IPC: H04N7/12 ,  H04N19/109 ,  H04N19/172 ,  H04N19/513 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/513 ,  H04N19/109 ,  H04N19/172 ,  H04N19/176 ,  H04N19/70

Abstract: There is provided a technique that includes a merging candidate list constructor that constructs a merging candidate list including spatial merging candidates, and a triangle merging candidate selector that selects, from the merging candidate list, a first triangle merging candidate that is uni-prediction and a second triangle merging candidate that is uni-prediction, in which the triangle merging candidate selector derives a uni-prediction motion information candidate having a same priority in the first triangle merging candidate and the second triangle merging candidate.

公开(公告)号：US11979597B2

公开(公告)日：2024-05-07

申请号：US17963016

申请日：2022-10-10

Applicant: JVCKENWOOD Corporation

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

IPC: H04N19/52 ,  H04N19/105 ,  H04N19/176 ,  H04N19/44

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/176 ,  H04N19/44

Abstract: A picture coding device includes a coding information storage unit configured to initialize to fill a history-based motion vector predictor candidate list with history-based candidates having at least predetermined motion vector and reference index, a motion vector predictor candidate derivation unit configured to derive a history-based candidate included in the history-based motion vector predictor candidate list as a motion vector predictor, a motion vector subtraction unit configured to calculate a motion vector difference by subtracting the derived motion vector predictor from a motion vector by which inter prediction is performed, wherein the coding information storage unit adds the motion vector to the history-based motion vector predictor candidate list as a history-based candidate and updates the history-based motion vector predictor candidate list.

公开(公告)号：US12137212B2

公开(公告)日：2024-11-05

申请号：US18209291

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：US12137211B2

公开(公告)日：2024-11-05

申请号：US18206894

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

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, a spatial motion vector predictor candidate derivation unit configured to derive a spatial motion vector predictor candidate from a block neighboring a target block and add the spatial motion vector predictor candidate to a motion vector predictor candidate list, and 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 the motion vector predictor candidate list as a motion vector predictor candidate.

公开(公告)号：US12101471B2

公开(公告)日：2024-09-24

申请号：US18210512

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：US11917133B2

公开(公告)日：2024-02-27

申请号：US17952282

申请日：2022-09-25

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

CPC classification number: 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：US11800087B2

公开(公告)日：2023-10-24

申请号：US17205036

申请日：2021-03-18

Applicant: JVCKENWOOD Corporation

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

IPC: H04N19/105 ,  H04N19/51 ,  H04N19/139 ,  H04N19/159 ,  H04N19/172

CPC classification number: H04N19/105 ,  H04N19/139 ,  H04N19/159 ,  H04N19/172 ,  H04N19/51

Abstract: There is provided a technique that includes a triangle merging candidate list constructor structured to construct a triangle merging candidate list including spatial merging candidates, a first triangle merging candidate selector structured to select, from the triangle merging candidate list, a first triangle merging candidate that is uni-prediction, and a second triangle merging candidate selector structured to select, from the triangle merging candidate list, a second triangle merging candidate that is uni-prediction, in which in a region where motion compensation by weighted averaging by the first triangle merging candidate and the second triangle merging candidate is performed, uni-prediction motion information of one of the first triangle merging candidate or the second triangle merging candidate is saved.

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.