公开(公告)号：US11501570B2

公开(公告)日：2022-11-15

申请号：US17280226

申请日：2018-09-27

Applicant: NEC Corporation

Inventor： Keiichi Chono ,  Masato Tsukada ,  Chisato Funayama ,  Ryuichi Akashi ,  Yuka Ogino ,  Takashi Shibata ,  Shoji Yachida ,  Hiroshi Imai ,  Emi Kitagawa ,  Yasuhiko Yoshida ,  Yusuke Mori

IPC: G06V10/20 ,  G06V40/19 ,  G06V40/18 ,  G06V10/147 ,  G06V10/62

Abstract: An authentication system according to one aspect of the present disclosure includes: at least one memory storing a set of instructions; and at least one processor configured to execute the set of instructions to: track an object included in a video captured by a first capture device; detect a candidate for biometric authentication in the object being tracked; determine whether biometric authentication has been performed for the candidate based on a record of biometric authentication performed for the object being tracked; and perform the biometric authentication for the candidate based on a video of an authentication part of the candidate when the biometric authentication has not been performed for the candidate, the video of the authentication part being captured by a second capture device having a capture range including a part of a capture range of the first capture device.

公开(公告)号：US11483571B2

公开(公告)日：2022-10-25

申请号：US16984913

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：US20220232223A1

公开(公告)日：2022-07-21

申请号：US17686727

申请日：2022-03-04

Applicant: NEC Corporation

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

IPC: H04N19/156 ,  H04N19/503 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61 ,  H04N19/593 ,  H04N19/12 ,  H04N19/172 ,  H04N19/184

Abstract: A video decoding device and method, including extracting PCM block size information including a threshold, from a bitstream, determining the threshold based on the extracted PCM block size information; parsing a PCM header from the bitstream with respect to an encoded block, only when said encoded block is prediction mode of intra prediction and a block size of said encoded block is equal to or greater than the determined threshold, controlling an entropy decoding process and a PCM decoding process based on the parsed PCM header; parsing transformed data of a prediction error data of an image in the bitstream; and PCM-decoding PCM data of the image in the bitstream, wherein the decoding performs the decoding operation based on the prediction mode being intra prediction and based on the block size of the encoded block being equal to or greater than the determined threshold.

公开(公告)号：US20220180662A1

公开(公告)日：2022-06-09

申请号：US17680786

申请日：2022-02-25

Applicant: NEC Corporation

Inventor： Takashi SHIBATA ,  Shoji Yachida ,  Chisato Funayama ,  Masato Tsukada ,  Yuka Ogino ,  Keiichi Chono ,  Emi Kitagawa ,  Yasuhiko Yoshida ,  Yusuke Mori

IPC: G06V40/18 ,  G06V40/16 ,  G06V40/19 ,  G06V40/70 ,  G06V40/20

Abstract: The disclosure is inputting a first image obtained by capturing an object of authentication moving in a specific direction; inputting a second image at least for one eye obtained by capturing a right eye or a left eye of the object; determining whether the second image is of the left eye or the right eye of the object, based on information including the first image, and outputting a determination result associated with the second image as left/right information; comparing characteristic information relevant to the left/right information, the characteristic information being acquired from a memory that stores the characteristic information of a right eye and a left eye pertaining to object to be authenticated, with characteristic information associated with the left/right information, and calculating a verification score; and authenticating the object captured in the first image and the second image, based on the verification score, and outputting an authentication result.

公开(公告)号：US11039141B2

公开(公告)日：2021-06-15

申请号：US15516223

申请日：2015-08-12

Applicant: NEC Corporation

Inventor： Keiichi Chono

IPC: H04N19/126 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/136

Abstract: A video coding device is able to select, from among a plurality of color spaces, a color space of a prediction error signal in coded block units, and includes: an adaptive chroma quantization offset derivation unit for deriving a quantization offset for each color space; and an inverse quantization unit for inverse-quantizing a quantization coefficient image by using the chroma quantization offset for each color space.

公开(公告)号：US10827201B2

公开(公告)日：2020-11-03

申请号：US16824778

申请日：2020-03-20

Applicant: NEC CORPORATION

Inventor： Takayuki Ishida ,  Keiichi Chono

IPC: H04N19/70 ,  H04N19/114 ,  H04N19/136 ,  H04N19/103 ,  H04N19/177 ,  H04N19/30 ,  H04N19/31

Abstract: In a video encoding device, a transmission section sets a value corresponding to characteristics specified by ITU-R BT.709 to 1 in the transfer characteristics syntax when the dynamic range of the video signal is a SDR (Standard Dynamic Range), and sets a value corresponding to one of characteristics specified by HLG (Hybrid Log Gamma) to 18 or a value corresponding to one of characteristics specified by PQ (Perceptual Quantizer) to 16 when the dynamic range of the video signal is a HDR (High Dynamic Range).

公开(公告)号：US10298941B2

公开(公告)日：2019-05-21

申请号：US15111239

申请日：2015-01-22

Applicant: NEC Corporation

Inventor： Naoya Tsuji ,  Takayuki Ishida ,  Suguru Nagayama ,  Kensuke Shimofure ,  Keiichi Chono

IPC: H04N19/40 ,  H04N19/70 ,  H04N19/91 ,  H04N19/11 ,  H04N19/176 ,  H04N19/159 ,  H04N19/147 ,  H04N19/96

Abstract: A video encoding device includes a coded data transcoding section 131 for transcoding first coded data generated by a first video encoding section 11 to generate second coded data, wherein the coded data transcoding section 131 includes: a prediction mode adding section 1312 for generating intra prediction modes unusable by the first video encoding section 11 and usable by a second video encoding section 14; and a prediction mode selecting section 1313 for evaluating the prediction modes generated by the prediction mode adding section 1312 and, based on the evaluation results, selecting a prediction mode used by the second video encoding section 14.

公开(公告)号：US10097847B2

公开(公告)日：2018-10-09

申请号：US15344635

申请日：2016-11-07

Applicant: NEC CORPORATION

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

IPC: H04N7/12 ,  H04N19/44 ,  H04N19/61 ,  H04N19/91 ,  H04N19/182

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：US10003804B2

公开(公告)日：2018-06-19

申请号：US14651466

申请日：2013-12-03

Applicant: NEC Corporation

Inventor： Kenta Tokumitsu ,  Keiichi Chono

IPC: H04N19/126 ,  H04N19/65 ,  H04N19/91 ,  H04N19/149 ,  H04N19/13 ,  H04N19/132 ,  H04N19/18 ,  H04N19/147 ,  H04N19/15 ,  H04N19/124

CPC classification number: H04N19/126 ,  H04N19/124 ,  H04N19/13 ,  H04N19/132 ,  H04N19/147 ,  H04N19/149 ,  H04N19/15 ,  H04N19/18 ,  H04N19/65 ,  H04N19/91

Abstract: The quantization unit calculates the number of bits of location information determined based on the location of a coefficient level to be significant first in order of transmission and included in the image block, calculates the number of value information bits of a coefficient level to be significant, and sets a coefficient level to be significant in which the number of location information bits and the number of value information bits meet a predetermined condition to 0.

公开(公告)号：US09712826B2

公开(公告)日：2017-07-18

申请号：US14877453

申请日：2015-10-07

Applicant: NEC CORPORATION

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

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

CPC classification number: H04N19/147 ,  H04N19/109 ,  H04N19/119 ,  H04N19/157 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/503 ,  H04N19/61 ,  H04N19/65 ,  H04N19/70 ,  H04N19/91

Abstract: A video decoding device for decoding video using inter prediction comprises decoding control unit setting partition type of CU to be decoded to a type other than N×N which indicates a size of PU obtained by dividing a CU to be decoded is a minimum size, when a prediction mode of the CU to be decoded is an inter prediction and a size of the CU to be decoded is equal to a minimum CU size.