公开(公告)号：US20180352260A1

公开(公告)日：2018-12-06

申请号：US15777980

申请日：2016-11-14

Applicant: NEC CORPORATION

Inventor： Takayuki ISHIDA ,  Keiichi CHONO

IPC: H04N19/70 ,  H04N19/30 ,  H04N19/103

CPC classification number: H04N19/114 ,  H04N19/136 ,  H04N19/177 ,  H04N19/31 ,  H04N19/70

Abstract: A video encoding device is a video encoding device for appropriately selecting a scalable encoding structure from a plurality of scalable encoding structures to generate a bitstream, using dynamic range-related video signal information, and includes an encoding section for selecting the scalable encoding structure capable of transmitting the dynamic range-related video signal information for switching a dynamic range, when a video signal to be encoded is switched from an SDR (a standard dynamic range) signal to an HDR (a high dynamic range) signal or switched from the HDR signal to the SDR signal in a temporal direction.

公开(公告)号：US20170201773A1

公开(公告)日：2017-07-13

申请号：US15314551

申请日：2015-06-05

Applicant: NEC Corporation

Inventor： Kenta TOKUMITSU ,  Keiichi CHONO

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/33 ,  H04N19/513

CPC classification number: H04N19/96 ,  H04N19/115 ,  H04N19/119 ,  H04N19/162 ,  H04N19/167 ,  H04N19/30 ,  H04N19/33 ,  H04N19/513 ,  H04N19/52

Abstract: A video coding apparatus for outputting a scalable bit stream obtained by multiplexing a base layer bit stream and an enhancement layer bit stream, includes: a rectangular area generation unit configured to generate a rectangular area that is of a multiple of a CTU (Coding Tree Unit) size and includes a particular rectangular area; a determination unit configured to determine whether a CTU of a coding target is included in the rectangular area of the multiple of the CTU size; and a prediction unit configured to, when the CTU of the coding target is not included in the rectangular area of the multiple of the CTU size, divide the CTU of the coding target by a minimum number of CU blocks, and predict each of obtained CUs with a prediction signal of a zero motion vector from the base layer.

公开(公告)号：US20160323604A1

公开(公告)日：2016-11-03

申请号：US15210414

申请日：2016-07-14

Applicant: NEC Corporation

Inventor： Keiichi CHONO

IPC: H04N19/96 ,  H04N19/107 ,  H04N19/119 ,  H04N19/124 ,  H04N19/146 ,  H04N19/176 ,  H04N19/70 ,  H04N19/91 ,  H04N19/44 ,  H04N19/12

CPC classification number: H04N19/96 ,  H04N19/107 ,  H04N19/119 ,  H04N19/12 ,  H04N19/124 ,  H04N19/146 ,  H04N19/176 ,  H04N19/44 ,  H04N19/70 ,  H04N19/91

Abstract: Although a video encoding device multiplexes ctu_pcm_flag syntax indicating whether all image blocks belonging to a coding tree unit as a set of image blocks are PCM blocks, at the top of the coding tree unit, when all image blocks belonging to the coding tree unit are PCM blocks, at least cu_split_flag syntax indicative of the splitting pattern of the coding tree unit is not multiplexed to transmit PCM data efficiently.

公开(公告)号：US20160301941A1

公开(公告)日：2016-10-13

申请号：US14772287

申请日：2014-07-25

Applicant: NEC CORPORATION

Inventor： Keiichi CHONO ,  Seiya SHIBATA ,  Takayuki ISHIDA ,  Kensuke SHIMOFURE

IPC: H04N19/40 ,  H04N19/146

CPC classification number: H04N19/40 ,  H04N19/103 ,  H04N19/146 ,  H04N19/157 ,  H04N19/176 ,  H04N19/194

Abstract: A video encoding device includes: a first video encoding section 11 for encoding an input image to generate first coded data; a buffer 12 for storing the input image; a coded data transcoding/merging section 13 for transcoding and then merging the first coded data generated by the first video encoding section 11, to generate second coded data; and a second video encoding section 14 for estimating a syntax value for encoding the input image stored in the buffer 12 based on the second coded data supplied from the coded data transcoding/merging section 13, to generate a bitstream. The first video encoding section 11 has a function of handling a first encoding process included in a second encoding process handled by the second video encoding section 14. The coded data transcoding/merging section 13 transcodes coded data by the first encoding process to coded data corresponding to the second encoding process.

Abstract translation: 视频编码装置包括：第一图像编码部分11，用于对输入图像进行编码以产生第一编码数据; 用于存储输入图像的缓冲器12; 编码数据代码转换/合并部分13，用于对由第一视频编码部分11产生的第一编码数据进行代码转换，然后合并，以产生第二编码数据; 以及第二视频编码部分14，用于基于从编码数据代码转换/合并部分13提供的第二编码数据估计用于对存储在缓冲器12中的输入图像进行编码的语法值，以生成比特流。 第一视频编码部分11具有处理包括在由第二视频编码部分14处理的第二编码处理中的第一编码处理的功能。编码数据代码转换/合并部分13通过第一编码处理将编码数据转码成对应于编码数据 到第二编码过程。

公开(公告)号：US20160057455A1

公开(公告)日：2016-02-25

申请号：US14931181

申请日：2015-11-03

Applicant: NEC CORPORATION

Inventor： Keiichi CHONO ,  Yuzo SENDA ,  Junji TAJIME ,  Hirofumi AOKI ,  Kenta SENZAKI

IPC: H04N19/60 ,  H04N19/17 ,  H04N19/91 ,  H04N19/182

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：US20150358632A1

公开(公告)日：2015-12-10

申请号：US14759469

申请日：2013-12-11

Applicant: NEC CORPORATION

Inventor： Keiichi CHONO

IPC: H04N19/44 ,  H04N19/91 ,  H04N19/96 ,  H04N19/176

CPC classification number: H04N19/96 ,  H04N19/107 ,  H04N19/119 ,  H04N19/12 ,  H04N19/124 ,  H04N19/146 ,  H04N19/176 ,  H04N19/44 ,  H04N19/70 ,  H04N19/91

Abstract: Although a video encoding device multiplexes ctu_pcm_flag syntax indicating whether all image blocks belonging to a coding tree unit as a set of image blocks are PCM blocks, at the top of the coding tree unit, when all image blocks belonging to the coding tree unit are PCM blocks, at least cu_split_flag syntax indicative of the splitting pattern of the coding tree unit is not multiplexed to transmit PCM data efficiently.

Abstract translation: 尽管视频编码装置将表示属于编码树单位的所有图像块作为一组图像块的ctu_pcm_flag语法复用在编码树单元的顶部，但是当属于编码树单元的所有图像块都是PCM 块，至少表示编码树单元的分割模式的cu_split_flag语法不被多路复用以有效地发送PCM数据。

公开(公告)号：US20150326859A1

公开(公告)日：2015-11-12

申请号：US14410215

申请日：2013-06-06

Applicant: NEC Corporation

Inventor： Keiichi CHONO

IPC: H04N19/13 ,  H04N19/593 ,  H04N19/463 ,  H04N19/169 ,  H04N19/126

CPC classification number: H04N19/13 ,  H04N19/126 ,  H04N19/1887 ,  H04N19/463 ,  H04N19/593

Abstract: A video quantization parameter encoding device includes: a prediction unit (11) for generating a predicted quantization parameter from a past reconstructed quantization parameter; a computing unit (12) for generating a delta quantization parameter from a quantization parameter and the predicted quantization parameter; and a quantization parameter encoding unit (13) for generating an exponential Golomb bin string of a value obtained by converting the delta quantization parameter into an unsigned expression, performing adaptive binary arithmetic encoding on a first bin of the exponential Golomb bin string, indicating whether the value of the unsigned expression of the delta quantization parameter is significant, and, when the first bin indicates the value is significant, performing fixed binary arithmetic encoding on other bins of the exponential Golomb bin string.

Abstract translation: 视频量化参数编码装置包括：预测单元，用于从过去的重建量化参数产生预测量化参数; 计算单元（12），用于从量化参数和所述预测量化参数产生增量量化参数; 以及量化参数编码单元（13），用于生成通过将所述增量量化参数转换为无符号表达式而获得的值的指数哥伦布bin列，对所述指数格隆字符串串的第一个bin执行自适应二进制算术编码， delta量化参数的无符号表达式的值是显着的，并且当第一个bin指示该值是有效时，对指数Golomb bin字符串的其他bin执行固定的二进制算术编码。

公开(公告)号：US20250017494A1

公开(公告)日：2025-01-16

申请号：US18896992

申请日：2024-09-26

Applicant: NEC Corporation

Inventor： Takashi SHIBATA ,  Shoji YACHIDA ,  Chisato FUNAYAMA ,  Masato TSUKADA ,  Yuka OGINO ,  Keiichi CHONO ,  Emi KITAGAWA ,  Yasuhiko YOSHIDA ,  Yusuke MORI

IPC: A61B5/1171 ,  G06F21/32 ,  G06V10/26

Abstract: An authentication device includes an image acquisition unit, an identification unit, and an authentication unit. The image acquisition unit acquires an image of an eye of a subject. The identification unit identifies the colored pattern of a colored contact lens worn by the subject by comparing a reference image with the image of the eye. The authentication unit identifies the subject, using a feature in a region other than a colored region of the colored pattern in the iris region of the eye.

公开(公告)号：US20240163448A1

公开(公告)日：2024-05-16

申请号：US18420036

申请日：2024-01-23

Applicant: NEC Corporation

Inventor： Kenta SENZAKI ,  Yuzo SENDA ,  Keiichi CHONO ,  Hirofumi AOKI

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

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

Abstract: In a video decoding device for decoding video using inter prediction, decoding control means sets capable values of an inter-PU (Prediction Unit) partition type of a CU (Coding Unit) to be decoded, based on whether or not a size of the CU to be decoded is equal to a minimum inter-PU size.

公开(公告)号：US20240129482A1

公开(公告)日：2024-04-18

申请号：US18483984

申请日：2023-10-10

Applicant: NEC Corporation

Inventor： Kenta IIDA ,  Kenta TOKUMITSU ,  Tatsuji MORIYOSHI ,  Keiichi CHONO

IPC: H04N19/139 ,  H04N19/132 ,  H04N19/176

CPC classification number: H04N19/139 ,  H04N19/132 ,  H04N19/176

Abstract: The video coding device is a video coding device capable of executing a predictive coding process including a specific process in which a coded frame of a different resolution from a resolution of a frame to be processed is used as a reference frame, and includes a coding unit which executes the predictive coding process, and a controller which prohibits, in the predictive coding process, execution of a first process which uses information, which is determined based on a spatial position of the block to be coded, on blocks in frames at different times, a second process which performs correction using information computed when decoding is performed, or both the first process and the second process.