公开(公告)号：EP3910954A1

公开(公告)日：2021-11-17

申请号：EP21183211.8

申请日：2017-08-07

申请人： SHARP Kabushiki Kaisha ,  FG INNOVATION COMPANY LIMITED

发明人： YASUGI, Yukinobu ,  IKAI, Tomohiro ,  YAMAMOTO, Yoshiya

IPC分类号： H04N19/463 ,  H04N19/593 ,  H04N19/70 ,  H04N19/105 ,  H04N19/11 ,  H04N19/176 ,  H04N19/96

摘要： An image decoding apparatus for using a binary tree division in addition to a quad tree division when dividing a picture includes an intra prediction parameter decoding control unit and a prediction image generation unit. The intra prediction parameter decoding control unit changes a first association between a plurality of prediction directions and a plurality of mode indices in an intra prediction mode into a second association based on a shape of a block. The prediction image generation unit generates a prediction image by the mode indices and the second association. The intra prediction parameter decoding control unit changes a number of first portions of the prediction directions based on the shape to generate a plurality of changed prediction directions for determining the second association based on the changed prediction directions. The prediction directions directed toward a first direction region are the first portions of the prediction directions.

公开(公告)号：EP3506638A1

公开(公告)日：2019-07-03

申请号：EP17843381.9

申请日：2017-08-07

申请人： Sharp Kabushiki Kaisha ,  FG INNOVATION COMPANY LIMITED

发明人： YASUGI, Yukinobu ,  IKAI, Tomohiro ,  YAMAMOTO, Yoshiya

IPC分类号： H04N19/463 ,  H04N19/593 ,  H04N19/70

摘要： An image decoding apparatus includes: an MPM candidate list deriving unit that derives an MPM candidate list by adding a plurality of different intra prediction modes to the MPM candidate list based on a shape of a target block, and an MPM parameter decoding unit decoding parameters for deriving the intra-prediction modes from the MPM candidate list.

公开(公告)号：EP3457690A1

公开(公告)日：2019-03-20

申请号：EP17795893.1

申请日：2017-04-17

申请人： Sharp Kabushiki Kaisha

发明人： YAMAMOTO, Yoshiya ,  IKAI, Tomohiro

IPC分类号： H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/196 ,  H04N19/423 ,  H04N19/70 ,  H04N19/82

摘要： It is an object to provide an image decoding device and an image encoding device that can achieve high coding efficiency with a low throughput. An image decoding device (31) includes a block parameter deriver (5211) configured to derive a block index by referring to a pixel value of an unfiltered decoded image in a target unit area, and a filter processor (525) configured to perform adaptive filter processing on the unfiltered decoded image in the target unit area, by using a filter coefficient in accordance with the block index.

公开(公告)号：EP2903285A1

公开(公告)日：2015-08-05

申请号：EP13841962.7

申请日：2013-09-26

申请人： Sharp Kabushiki Kaisha

发明人： IKAI, Tomohiro ,  UCHIUMI, Tadashi ,  YAMAMOTO, Yoshiya

IPC分类号： H04N19/52 ,  H04N19/30

CPC分类号： H04N19/503 ,  H04N19/30 ,  H04N19/36 ,  H04N19/44 ,  H04N19/52 ,  H04N19/55 ,  H04N19/597 ,  H04N19/70

摘要： A disparity vector generation section generates disparity vectors indicating a part of a disparity between a first layer image and a second layer image different from the first layer image and different part of the disparity based on a code indicating the part of the disparity. A predicted image generation section reads a reference image of a region indicated by the disparity vector generated by the disparity vector generation section from a reference image storage section that stores the reference image and generates a predicted image based on the read reference image.

摘要翻译： 视差矢量生成部基于表示视差的一部分的码，生成表示第一层图像与第一层图像不同的第二层图像和视差的不同部分之间的视差的一部分的视差矢量。 预测图像生成部分从存储参考图像的参考图像存储部分读取由视差矢量生成部分生成的视差向量所指示的区域的参考图像，并且基于读取的参考图像生成预测图像。