公开(公告)号：US11695961B2

公开(公告)日：2023-07-04

申请号：US17554960

申请日：2021-12-17

Applicant: NEC Corporation

Inventor： Hirofumi Aoki ,  Keiichi Chono ,  Masato Tsukada

IPC: H04N19/159 ,  H04N19/196 ,  H04N19/70 ,  H04N19/105 ,  H04N19/68 ,  H04N19/50 ,  H04N19/107 ,  H04N19/167 ,  H04N19/174 ,  H04N19/44

CPC classification number: H04N19/68 ,  H04N19/105 ,  H04N19/107 ,  H04N19/159 ,  H04N19/167 ,  H04N19/174 ,  H04N19/196 ,  H04N19/44 ,  H04N19/50 ,  H04N19/70

Abstract: A video decoding device includes a demultiplexing unit which demultiplexes a video bitstream including video data of an encoded slice, first Supplemental-Enhancement-Information having information indicating segments where a refresh has completed in a current picture, and second Supplemental-Enhancement-Information having information indicating a synchronization starting picture and a synchronization completed picture, an extracting unit which extracts the information indicating segments where a refresh has completed in a current picture from a message which is part of the demultiplexed Supplemental-Enhancement-Information; and a video decoding unit which decodes image data from the demultiplexed video bitstream by using at least inter prediction, wherein the synchronization starting picture is a leading picture within a refreshing period, and the synchronization completed picture is the end position of the refreshing period.

公开(公告)号：US11582461B2

公开(公告)日：2023-02-14

申请号：US17066136

申请日：2020-10-08

Applicant: NEC CORPORATION

Inventor： Kenta Senzaki ,  Yuzo Senda ,  Keiichi Chono ,  Hirofumi Aoki

IPC: H04N19/103 ,  H04N19/147 ,  H04N19/503 ,  H04N19/176 ,  H04N19/70 ,  H04N19/119 ,  H04N19/46 ,  H04N19/61 ,  H04N19/109 ,  H04N19/157 ,  H04N19/44 ,  H04N19/91 ,  H04N19/65

Abstract: A video encoding device for encoding video using inter prediction includes encoding control means 11 for controlling an inter-PU partition type of a CU to be encoded, based on a minimum inter-PU size (PA) and a CU size (PB) of the CU to be encoded. A video decoding device includes decoding control means for controlling an inter-PU partition of a CU to be decoded, based on the minimum inter-PU size (PA) and the size (PB) of the CU to be decoded.

公开(公告)号：US11412261B2

公开(公告)日：2022-08-09

申请号：US16905811

申请日：2020-06-18

Applicant: NEC Corporation

Inventor： Hirofumi Aoki ,  Keiichi Chono ,  Masato Tsukada

IPC: H04N19/68 ,  H04N19/159 ,  H04N19/105 ,  H04N19/107 ,  H04N19/50 ,  H04N19/196 ,  H04N19/70 ,  H04N19/167 ,  H04N19/174 ,  H04N19/44

Abstract: A video decoding device includes a demultiplexer which demultiplexes a video bitstream including video data of an encoded slice, Supplemental-Enhancement-Information having first information indicating a leading picture in gradual refresh, and Supplemental-Enhancement-Information having second information indicating segments where a refresh has completed in a current picture; an extractor which extracts the second information from a message which is part of the demultiplexed Supplemental-Enhancement-Information; and a video decoder which decodes image data from the demultiplexed video bitstream by using at least inter prediction, wherein the video decoder starts decoding based on the leading picture in gradual refresh.

公开(公告)号：US20220109881A1

公开(公告)日：2022-04-07

申请号：US17554960

申请日：2021-12-17

Applicant: NEC Corporation

Inventor： Hirofumi Aoki ,  Keiichi Chono ,  Masato Tsukada

IPC: H04N19/68 ,  H04N19/50 ,  H04N19/159 ,  H04N19/196 ,  H04N19/70 ,  H04N19/105 ,  H04N19/107 ,  H04N19/167 ,  H04N19/174 ,  H04N19/44

Abstract: A video decoding device includes a demultiplexing unit which demultiplexes a video bitstream including video data of an encoded slice, first Supplemental-Enhancement-Information having information indicating segments where a refresh has completed in a current picture, and second Supplemental-Enhancement-Information having information indicating a synchronization starting picture and a synchronization completed picture, an extracting unit which extracts the information indicating segments where a refresh has completed in a current picture from a message which is part of the demultiplexed Supplemental-Enhancement-Information; and a video decoding unit which decodes image data from the demultiplexed video bitstream by using at least inter prediction, wherein the synchronization starting picture is a leading picture within a refreshing period, and the synchronization completed picture is the end position of the refreshing period.

公开(公告)号：US09936212B2

公开(公告)日：2018-04-03

申请号：US14931305

申请日：2015-11-03

Applicant: NEC CORPORATION

Inventor： Keiichi Chono ,  Yuzo Senda ,  Junji Tajime ,  Hirofumi Aoki ,  Kenta Senzaki

IPC: H04N7/12 ,  H04N19/44 ,  H04N19/182 ,  H04N19/172 ,  H04N19/91

CPC classification number: H04N19/44 ,  H04N19/00781 ,  H04N19/12 ,  H04N19/156 ,  H04N19/17 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/46 ,  H04N19/60 ,  H04N19/61 ,  H04N19/91

Abstract: A video encoding device includes: pixel bit length increasing means for increasing a pixel bit length of an input image based on pixel bit length increase information; transform means for transforming output data of the pixel bit length increasing means; entropy encoding means for entropy-encoding output data of the transform means; non-compression encoding means for non-compression-encoding input data; multiplexed data selection means for selecting output data of the entropy encoding means or output data of the non-compression encoding means; and multiplexing means for multiplexing the pixel bit length increase information in a bitstream, wherein a pixel bit length of an image corresponding to the output data of the entropy encoding means and a pixel bit length of an image corresponding to the output data of the non-compression encoding means are different from each other.

公开(公告)号：US20140307779A1

公开(公告)日：2014-10-16

申请号：US14355455

申请日：2012-10-25

Applicant: NEC Corporation

Inventor： Keiichi Chono ,  Hirofumi Aoki ,  Yuzo Senda

IPC: H04N19/70 ,  H04N19/12 ,  H04N19/13 ,  H04N19/176

CPC classification number: H04N19/463 ,  H04N19/12 ,  H04N19/156 ,  H04N19/176 ,  H04N19/70

Abstract: A video encoding device includes: a transformer for transforming an image block; an entropy encoder for entropy-encoding transformed data of the image block transformed by the transformer; a PCM encoder for PCM-encoding an image block; a multiplexed data selector for selecting output data of the entropy encoder or output data of the PCM encoder, for each block of an externally set block size; and a multiplexer for embedding a PCM header into a bitstream, in a block of the externally set block size, wherein the number of successive PCM-encoded blocks is embedded into the PCM header, and PCM data for the number of successive PCM-encoded blocks is multiplexed into the bitstream.

Abstract translation: 视频编码装置包括：变换器，用于变换图像块; 用于对由变压器变换的图像块的变换数据进行熵编码的熵编码器; 用于对图像块进行PCM编码的PCM编码器; 复用数据选择器，用于为外部设置的块大小的每个块选择熵编码器的输出数据或PCM编码器的输出数据; 以及多路复用器，用于在外部设置的块大小的块中将PCM头部嵌入到比特流中，其中连续的PCM编码块的数量被嵌入到PCM头部中，并且PCM数据用于连续的PCM编码块的数量 被复用到比特流中。

公开(公告)号：US20230156198A1

公开(公告)日：2023-05-18

申请号：US18099020

申请日：2023-01-19

Applicant: NEC Corporation

Inventor： Kenta SENZAKI ,  Yuzo Senda ,  Keiichi Chono ,  Hirofumi Aoki

IPC: H04N19/147 ,  H04N19/503 ,  H04N19/176 ,  H04N19/70 ,  H04N19/119 ,  H04N19/46 ,  H04N19/61 ,  H04N19/109 ,  H04N19/157 ,  H04N19/103 ,  H04N19/44

CPC classification number: H04N19/147 ,  H04N19/503 ,  H04N19/176 ,  H04N19/70 ,  H04N19/119 ,  H04N19/46 ,  H04N19/61 ,  H04N19/109 ,  H04N19/157 ,  H04N19/103 ,  H04N19/44 ,  H04N19/91

Abstract: A video decoding device for decoding video using inter prediction includes entropy decoding means for decoding an inter-PU partition type syntax; and decoding control means for making the entropy decoding means decode the inter-PU (Prediction Unit) partition type syntax of a CU (Coding Unit) to be decoded, based on whether the prediction mode of the CU to be decoded is an inter prediction mode and whether a size of the CU to be decoded is equal to a predetermined minimum inter-PU size.

公开(公告)号：US11647205B2

公开(公告)日：2023-05-09

申请号：US17685579

申请日：2022-03-03

Applicant: NEC Corporation

Inventor： Kenta Senzaki ,  Yuzo Senda ,  Keiichi Chono ,  Hirofumi Aoki

IPC: H04N11/02 ,  H04N19/139 ,  H04N19/61 ,  H04N19/109 ,  H04N19/119 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/147 ,  H04N19/70 ,  H04N19/91 ,  H04N19/65

CPC classification number: H04N19/139 ,  H04N19/109 ,  H04N19/119 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/61 ,  H04N19/70 ,  H04N19/65 ,  H04N19/91

Abstract: A video encoding device includes encoding control means 11 for controlling an inter-PU partition type of a CU to be encoded, based on the maximum number (PA) of motion vectors allowed for an image block having a predetermined area and the number (PB) of motion vectors of an encoded image block contained in the image block having the predetermined area. A video decoding device includes decoding control means for controlling an inter-PU partition type of a CU to be decoded, based on the maximum number (PA) of motion vectors allowed for an image block having a predetermined area and the number (PB) of motion vectors of a decoded image block contained in the image block having the predetermined area.

公开(公告)号：US11496749B2

公开(公告)日：2022-11-08

申请号：US16984957

申请日：2020-08-04

Applicant: NEC CORPORATION

Inventor： Hirofumi Aoki ,  Keiichi Chono ,  Yuzo Senda ,  Kenta Senzaki

IPC: H04N7/12 ,  H04N19/159 ,  H04N19/196 ,  H04N19/593 ,  H04N19/124 ,  H04N19/157

Abstract: In a video decoding device, a quantization step size decoding unit calculates a quantization step size that controls a granularity of the inverse quantization by, based on an image prediction, selectively using a mean value of at least a quantization step size assigned to a leftwardly adjacent neighboring image block already decoded and a quantization step size assigned to a upwardly adjacent neighboring image block already decoded or a quantization step size assigned to an image block decoded immediately before.

公开(公告)号：US11323720B2

公开(公告)日：2022-05-03

申请号：US17060828

申请日：2020-10-01

Applicant: NEC CORPORATION

Inventor： Kenta Senzaki ,  Yuzo Senda ,  Keiichi Chono ,  Hirofumi Aoki

IPC: H04N11/02 ,  H04N19/139 ,  H04N19/61 ,  H04N19/109 ,  H04N19/119 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/147 ,  H04N19/70 ,  H04N19/91 ,  H04N19/65

Abstract: A video encoding device includes encoding control means 11 for controlling an inter-PU partition type of a CU to be encoded, based on the maximum number (PA) of motion vectors allowed for an image block having a predetermined area and the number (PB) of motion vectors of an encoded image block contained in the image block having the predetermined area. A video decoding device includes decoding control means for controlling an inter-PU partition type of a CU to be decoded, based on the maximum number (PA) of motion vectors allowed for an image block having a predetermined area and the number (PB) of motion vectors of a decoded image block contained in the image block having the predetermined area.