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：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：US12192447B2

公开(公告)日：2025-01-07

申请号：US18470093

申请日：2023-09-19

Applicant: JVCKENWOOD Corporation

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

IPC: 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：US12096007B2

公开(公告)日：2024-09-17

申请号：US17698351

申请日：2022-03-18

Applicant: JVCKENWOOD Corporation

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

IPC: H04N19/176 ,  H04N19/117 ,  H04N19/119 ,  H04N19/169 ,  H04N19/174 ,  H04N19/436 ,  H04N19/70 ,  H04N19/82

CPC classification number: H04N19/176 ,  H04N19/117 ,  H04N19/119 ,  H04N19/174 ,  H04N19/188 ,  H04N19/436 ,  H04N19/70 ,  H04N19/82

Abstract: An image conversion apparatus adapted to convert a coded picture that includes a slice including an integer number of rectangular areas each including a collection of one or more rows of blocks, the blocks being derived from dividing an image into blocks of a predetermined size, is provided. The apparatus converts the coded picture so as to reconfigure a relationship between the slice and the rectangular areas included in the coded picture, when a slice boundary and a rectangular area boundary in the coded picture are equal in terms of whether to apply a loop filter and converts the coded picture so as not to change the relationship between the slice and the rectangular areas included in the coded picture when the slice boundary and the rectangular area boundary in the coded picture are not equal in terms of whether to apply a loop filter.

公开(公告)号：US11516500B2

公开(公告)日：2022-11-29

申请号：US17269977

申请日：2019-12-19

Applicant: JVCKENWOOD Corporation

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

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

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 fill all history-based candidates in a history-based motion vector predictor candidate list with at least predetermined motion vector and reference index; a merging candidate list generation unit configured to generate a merging candidate list including at least a motion vector and a reference index of a block neighboring a coding target block as a merging candidate; a history-based merging candidate addition unit configured to add a history-based candidate included in the history-based motion vector predictor candidate list to the merging candidate list as a merging candidate and output a second merging candidate list; and a merging candidate selection unit configured to select a merging candidate from the second merging candidate list as a selection merging candidate, wherein the coding information storage unit adds the selection merging candidate to the history-based motion vector predictor candidate list as a history-based candidate and outputs the history-based motion vector predictor candidate list.

公开(公告)号：US11503277B2

公开(公告)日：2022-11-15

申请号：US17269931

申请日：2019-12-11

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: 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：US20220070469A1

公开(公告)日：2022-03-03

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 ,  H04N19/46 ,  H04N19/176

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.