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    AUTHENTICATION DEVICE, AUTHENTICATION METHOD, AND RECORDING MEDIUM
    82.
    发明申请
    AUTHENTICATION DEVICE, AUTHENTICATION METHOD, AND RECORDING MEDIUM 有权

    公开(公告)号：US20210406567A1

    公开(公告)日：2021-12-30

    申请号：US17279237

    申请日：2018-09-28

    Applicant: NEC Corporation

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

    IPC: G06K9/00

    Abstract: The disclosure is detecting an authentication target who is moving in a predetermined direction in a video; inputting a first image in which an entire body of the target; calculating characteristic information from an image of the entire body in the first image, comparing the calculated characteristic information with characteristic information of the entire body stored in first memory that stores characteristic information of entire bodies of targets, and extracting candidate information of the targets from the first memory based on a first authentication result; inputting a second image in which an iris of the target; and comparing characteristic information of irises stored in second memory that stores the characteristic information of the irises of targets with characteristic information of an iris from the second image, calculating a verification score, executing second authentication on the target in the second image based on the verification score, and outputting an authentication result.

    VIDEO ENCODING OR DECODING APPARATUS, VIDEO ENCODING OR DECODING METHOD, PROGRAM, AND RECORDING MEDIUM
    84.
    发明申请
    VIDEO ENCODING OR DECODING APPARATUS, VIDEO ENCODING OR DECODING METHOD, PROGRAM, AND RECORDING MEDIUM 有权

    公开(公告)号：US20210136412A1

    公开(公告)日：2021-05-06

    申请号：US17254937

    申请日：2019-02-14

    Applicant: NEC Corporation

    Inventor： Keiichi CHONO

    IPC: H04N19/593 ,  H04N19/105 ,  H04N19/167 ,  H04N19/176 ,  H04N19/169

    Abstract: The problem when the use range of images for use in intra-prediction is expanded is that the requirement for line buffer size increases depending on the range of expansion, and, in order to solve this problem, the use range of imaged for use in intra-prediction is adaptively controlled. The intra-prediction apparatus 100 of the present invention has, a control section 115 that controls, based on the relationship between the position of a candidate image for use in intra-prediction for a block to be processed and the position of the unit where the block to be processed belongs, the partial range for use for intra-prediction beyond the end portion of the unit in a predetermined direction in the use range of the image for use for intra-prediction to be equal to or less than a predetermined maximum range.

    VIDEO DECODING DEVICE, METHOD, AND PROGRAM
    86.
    发明申请
    VIDEO DECODING DEVICE, METHOD, AND PROGRAM 审中-公开

    公开(公告)号：US20200322638A1

    公开(公告)日：2020-10-08

    申请号：US16905811

    申请日：2020-06-18

    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 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.

    IMAGE QUANTIZATION PARAMETER ENCODING METHOD AND IMAGE QUANTIZATION PARAMETER DECODING METHOD
    89.
    发明申请
    IMAGE QUANTIZATION PARAMETER ENCODING METHOD AND IMAGE QUANTIZATION PARAMETER DECODING METHOD 审中-公开

    公开(公告)号：US20170324957A1

    公开(公告)日：2017-11-09

    申请号：US15655500

    申请日：2017-07-20

    Applicant: NEC Corporation

    Inventor： Keiichi CHONO ,  Hirofumi Aoki

    IPC: H04N19/126 ,  H04N19/463 ,  H04N19/44 ,  H04N19/169 ,  H04N19/154 ,  H04N19/91 ,  H04N19/13

    CPC classification number: H04N19/126 ,  H04N19/13 ,  H04N19/154 ,  H04N19/1887 ,  H04N19/44 ,  H04N19/463 ,  H04N19/91

    Abstract: Disclosed are image quantization parameter decoding method and systems for decoding a quantization parameter for a video decoding process that is based on context-based adaptive binary arithmetic coding. In one embodiment, an image quantization parameter decoding method includes binary-arithmetic-decoding a first bin indicating whether or not a delta quantization parameter is significant, other bins, which are subsequent to the first bin, indicating an absolute value of the delta quantization parameter, and a sign bin, which is subsequent to the other bins, indicating whether the delta quantization parameter is positive or negative. The method further includes generating a delta quantization parameter by de-binarizing the first bin, the other bins and the sign bin. The method further includes generating a re-constructed quantization parameter by adding a predicted quantization parameter to the delta quantization parameter. The binary-arithmetic-decoding is performed using contexts for the first bin and the other bins, and using no context for the sign bin.

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