公开(公告)号：US20220124350A1

公开(公告)日：2022-04-21

申请号：US17422425

申请日：2020-01-06

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yuya OMORI ,  Takayuki ONISHI ,  Hiroe IWASAKI ,  Atsushi SHIMIZU

IPC: H04N19/167 ,  H04N19/105 ,  H04N19/137 ,  H04N19/176

Abstract: A reference region determination device is for determining a reference region to be stored in a reference image buffer, and includes: a motion vector acquisition portion configured to acquire a motion vector for each one of already encoded blocks; a position change amount derivation portion configured to derive a position change amount for the reference region based on the acquired motion vectors; and a reference region determination portion configured to determine a position of the reference region to be used in encoding of a next block for encoding after the already encoded blocks based on the position change amount.

公开(公告)号：US20240273874A1

公开(公告)日：2024-08-15

申请号：US18567353

申请日：2021-12-08

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Ken NAKAMURA ,  Yuya OMORI ,  Daisuke KOBAYASHI ,  Shuhei YOSHIDA ,  Saki HATTA ,  Hiroyuki UZAWA ,  Koyo NITTA

IPC: G06V10/77 ,  G06V10/82

CPC classification number: G06V10/7715 ,  G06V10/82

Abstract: When an output feature map to be an output of convolution processing is output, the output feature map is output to a storage unit for each of divided small regions. When each small region is output to the storage unit, in a case where a feature included in the small region is the same as a predetermined feature or a feature of a small region output in the past, the predetermined feature or the feature of a small region output in the past is compressed and output to the storage unit.

公开(公告)号：US20230409914A1

公开(公告)日：2023-12-21

申请号：US18037645

申请日：2020-11-30

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Shuhei YOSHIDA ,  Hiroyuki UZAWA ,  Saki HATTA ,  Yuya OMORI ,  Daisuke KOBAYASHI ,  Ken NAKAMURA ,  Koyo NITTA

IPC: G06N3/082 ,  G06N3/0464

CPC classification number: G06N3/082 ,  G06N3/0464 ,  G06V10/82

Abstract: The integration unit 26, using configuration information of the convolutional neural network model and each filter used in each convolutional layer of the convolutional neural network model as inputs, deletes one or more pieces of activation function processing performed between the plurality of convolutional layers and integrates a plurality of filters used in the plurality of convolutional layers.

公开(公告)号：US20230053579A1

公开(公告)日：2023-02-23

申请号：US17796528

申请日：2020-02-25

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Yuya OMORI ,  Ken NAKAMURA ,  Daisuke KOBAYASHI ,  Hiroe IWASAKI

IPC: H04N19/137 ,  H04N19/96 ,  H04N19/176

Abstract: A coding method is a coding method executed by a coding apparatus. The coding method includes partitioning a first block having a predetermined size in an original image into a group of second blocks each being a block serving as a unit for coding, by quad tree, ternary tree, or binary tree, and predicting movement for each of the second blocks. The partitioning includes first sub-partitioning and second sub-partitioning, the first sub-partitioning includes partitioning the first block into blocks each having a size selected from sizes determined according to the quad tree, the ternary tree, or the binary tree, and the second sub-partitioning includes further partitioning the blocks each having the selected size to generate the second blocks.

公开(公告)号：US20230022215A1

公开(公告)日：2023-01-26

申请号：US17783056

申请日：2019-12-09

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yuya OMORI ,  Ken NAKAMURA ,  Daisuke KOBAYASHI ,  Hiroe IWASAKI

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/182 ,  H04N19/14

Abstract: A coding method encodes an image by dividing the image into blocks, and comprises: dividing a coding target image into a plurality of coding unit blocks; determining whether or not to encode by dividing the coding unit block into a plurality of sub-coding unit blocks, on a basis of an edge direction and an edge strength of an edge obtained for each pixel in the coding unit block; and encoding, in a case of determining to divide the coding unit block into a plurality of sub-coding unit blocks in the determining step, a first sub-coding unit block by referencing a second sub-coding unit block inside the same coding unit block as the first sub-coding unit block.

公开(公告)号：US20220078437A1

公开(公告)日：2022-03-10

申请号：US17414889

申请日：2019-12-05

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yuya OMORI ,  Takayuki ONISHI ,  Hiroe IWASAKI ,  Atsushi SHIMIZU

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: A coding device executes coding having divided an image into blocks, and includes: a candidate obtainment unit that obtains a plurality of provisional motion vector candidates in a coding target block; an evaluation information obtainment unit that obtains a correspondence vector that is a vector having a same direction and a same magnitude as a direction and a magnitude of the obtained provisional motion vector candidates, and evaluation information of a search center indicated by the correspondence vector in a coded block; and a selection unit that, on the basis of the evaluation information, selects, from the plurality of provisional motion vector candidates, a number of motion vector candidates that is lower than the number of the plurality of provisional motion vector candidates.