公开(公告)号：EP2755388A4

公开(公告)日：2015-04-29

申请号：EP12847873

申请日：2012-11-01

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： MATSUO SHOHEI ,  TAKAMURA SEISHI ,  SHIMIZU ATSUSHI ,  JOZAWA HIROHISA

IPC分类号： H04N19/105 ,  H04N19/50 ,  H04N19/11 ,  H04N19/117 ,  H04N19/132 ,  H04N19/134 ,  H04N19/136 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/46 ,  H04N19/503 ,  H04N19/59 ,  H04N19/593 ,  H04N19/60 ,  H04N19/61 ,  H04N19/625 ,  H04N19/63 ,  H04N19/70 ,  H04N19/82

CPC分类号： H04N19/00793 ,  H04N19/105 ,  H04N19/117 ,  H04N19/136 ,  H04N19/157 ,  H04N19/176 ,  H04N19/59 ,  H04N19/593

摘要： An object is to reduce an intra-prediction error and improve coding efficiency by introducing an adaptive reference pixel generating process in accordance with coding conditions into intra-prediction. In picture encoding or picture decoding for generating a prediction signal using spatial inter-pixel prediction and encoding or decoding a picture using a prediction residual signal which is a difference between the prediction signal and an original signal, a tap length of an interpolation filter necessary for generating a reference pixel of intra-prediction is set based on one or both of a size of a block which is a processing unit of coding, transform, or prediction and a quantization parameter of the block for the reference pixel, a filtering process which generates the reference pixel is performed using the interpolation filter corresponding to the set tap length, and an intra-prediction signal corresponding to a designated intra-prediction mode is generated using the generated reference pixel.

公开(公告)号：EP2169962A4

公开(公告)日：2012-04-11

申请号：EP08791042

申请日：2008-07-10

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： SHIMIZU ATSUSHI ,  NAKAJIMA YASUYUKI

IPC分类号： H04N19/50 ,  H04N19/12 ,  H04N19/126 ,  H04N19/134 ,  H04N19/136 ,  H04N19/137 ,  H04N19/149 ,  H04N19/189 ,  H04N19/196 ,  H04N19/423 ,  H04N19/503 ,  H04N19/51 ,  H04N19/513 ,  H04N19/593 ,  H04N19/60 ,  H04N19/61 ,  H04N19/82 ,  H04N19/91

CPC分类号： H04N19/436 ,  H04N19/124 ,  H04N19/137 ,  H04N19/149 ,  H04N19/15 ,  H04N19/152 ,  H04N19/61

公开(公告)号：EP0921688A4

公开(公告)日：2002-09-18

申请号：EP98929681

申请日：1998-06-25

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： SHIMIZU ATSUSHI ,  JOZAWA HIROHISA ,  KAMIKURA KAZUTO ,  WATANABE HIROSHI ,  SAGATA ATSUSHI ,  TAKAMURA SEISHI

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/36 ,  H04N7/32

CPC分类号： H04N19/51 ,  H04N19/517 ,  H04N19/527 ,  H04N19/537

摘要： A moving vector predictive coding method by which the amount of codes produced for a moving vector is reduced and the efficiency of the moving vector prediction is improved; a moving vector decoding method; predictive coding and decoding devices; and a recording medium stored with a moving vector predictive coding and decoding programs. When a motion compensation mode for a small block to be coded is a global motion compensation method, and a coding mode for a coded small block is an interframe coding mode, while a motion compensation mode is a global motion compensation method, a moving vector of a translation moving model is determined for each pixel of the coded small block from the global moving vector (steps S1-S5). Next, from the moving vector of each pixel of the coded small block, a representative moving vector is calculated (step S6) and taken as a predicted vector. Finally, the prediction error is calculated for each component of the moving vector and then coded (step S7, S8).

公开(公告)号：EP2787729A4

公开(公告)日：2015-08-19

申请号：EP13740619

申请日：2013-01-22

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： KITAHARA MASAKI ,  SHIMIZU ATSUSHI ,  NAKAMURA KEN ,  KYOCHI SEISUKE ,  ONO NAOKI

IPC分类号： H04N19/176 ,  H04N19/103 ,  H04N19/107 ,  H04N19/115 ,  H04N19/124 ,  H04N19/152 ,  H04N19/167

CPC分类号： H04N19/107 ,  H04N19/115 ,  H04N19/124 ,  H04N19/132 ,  H04N19/152 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18

摘要： In an intra-picture, a predetermined region is set as a normal encoding region, and a region other than the predetermined region is set as a simplified encoding region. In a subsequent picture, the normal encoding region is set as a larger region including a normal encoding region of a previous picture, and a region other than the normal encoding region is set as a simplified encoding region. In each picture, normal encoding is performed on a block of the normal encoding region, and simplified encoding in which a generated code amount and a computation amount are smaller than in the normal encoding is performed on a block of the simplified encoding region.

公开(公告)号：EP2775718A4

公开(公告)日：2015-07-29

申请号：EP12857396

申请日：2012-12-12

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： WATANABE MAYUKO ,  KITAHARA MASAKI ,  SHIMIZU ATSUSHI

IPC分类号： H04N19/137 ,  H04N19/50 ,  H04N19/105 ,  H04N19/132 ,  H04N19/134 ,  H04N19/154 ,  H04N19/167 ,  H04N19/176 ,  H04N19/46 ,  H04N19/463 ,  H04N19/503 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86

CPC分类号： H04N19/593 ,  H04N19/105 ,  H04N19/137 ,  H04N19/154 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86

摘要： Compared to conventional intra divided-picture encoding, deterioration in the coding efficiency is suppressed and the encoding computational complexity and the decoding computational complexity are reduced. A divided picture generating unit divides an input encoding target picture into blocks of the same size and generates divided pictures having the same size by collecting pixels having the same relative position within each block. An intra divided-picture encoding processing unit performs intra divided-picture encoding on part of the divided pictures. An inter divided-picture encoding processing unit performs inter divided-picture encoding using another encoded divided picture as a reference picture. When there are a plurality of candidates for the reference picture, a correlation direction calculating unit obtains a combination in which a correlation of a pixel on an original picture is high among combinations of encoded divided pictures and their reference pictures. A reference picture selecting unit selects an encoded divided picture in a direction in which a correlation with an encoding target divided picture is high as the reference picture to be used in the inter divided-picture encoding processing unit.

公开(公告)号：EP2536148A4

公开(公告)日：2014-06-04

申请号：EP11742184

申请日：2011-02-07

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： KITAHARA MASAKI ,  SHIMIZU ATSUSHI ,  WATANABE MAYUKO

IPC分类号： H04N19/56 ,  H04N19/513 ,  H04N19/52 ,  H04N19/533

CPC分类号： H04N19/521 ,  H04N19/52 ,  H04N19/533 ,  H04N19/56

摘要： In a moving picture encoding apparatus, a primary candidate reference motion vector-setting unit sets N primary candidate reference motion vectors. A degree of reliability calculation unit calculates the reliability of each primary candidate reference motion vector, which represents effectiveness in predicting a motion vector of a block to be decoded, using coded or decoded image information. A reference motion vector determination unit selects M (M

公开(公告)号：EP2120463A4

公开(公告)日：2010-06-23

申请号：EP08721379

申请日：2008-03-05

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： SHIMIZU ATSUSHI ,  TANIDA RYUICHI

IPC分类号： H04N19/50 ,  H04N19/126 ,  H04N19/136 ,  H04N19/14 ,  H04N19/147 ,  H04N19/15 ,  H04N19/176 ,  H04N19/196 ,  H04N19/423 ,  H04N19/503 ,  H04N19/51 ,  H04N19/593 ,  H04N19/60 ,  H04N19/61 ,  H04N19/91

CPC分类号： H04N19/124 ,  H04N19/115 ,  H04N19/147 ,  H04N19/149 ,  H04N19/172 ,  H04N19/46 ,  H04N19/61

公开(公告)号：EP2536149A4

公开(公告)日：2015-06-24

申请号：EP11742207

申请日：2011-02-08

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： KITAHARA MASAKI ,  SHIMIZU ATSUSHI ,  WATANABE MAYUKO

IPC分类号： H04N19/56 ,  H04N19/513 ,  H04N19/52

CPC分类号： H04N19/521 ,  H04N19/52 ,  H04N19/56

公开(公告)号：EP2779645A4

公开(公告)日：2015-06-03

申请号：EP13740874

申请日：2013-01-21

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： ONO NAOKI ,  SHIMIZU ATSUSHI ,  NAKAMURA KEN ,  KITAHARA MASAKI ,  KYOCHI SEISUKE

IPC分类号： H04N7/26

CPC分类号： H04N19/172 ,  H04N19/132 ,  H04N19/146 ,  H04N19/156 ,  H04N19/587

公开(公告)号：EP2725801A4

公开(公告)日：2015-02-25

申请号：EP12819900

申请日：2012-07-31

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： WATANABE MAYUKO ,  KITAHARA MASAKI ,  SHIMIZU ATSUSHI

IPC分类号： H04N19/105 ,  H04N19/593 ,  H04N19/117 ,  H04N19/136 ,  H04N19/146 ,  H04N19/147 ,  H04N19/154 ,  H04N19/157 ,  H04N19/19 ,  H04N19/196 ,  H04N19/33 ,  H04N19/50 ,  H04N19/503 ,  H04N19/59 ,  H04N19/80

CPC分类号： H04N19/14 ,  H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/33 ,  H04N19/503 ,  H04N19/593

摘要： The encoding computational complexity and the decoding computational complexity are reduced while suppressing deterioration of coding efficiency in comparison with conventional intra divided-picture coding. A divided picture generation unit divides an input encoding target picture into blocks having the same size, and collects pixels having the same relative position in the blocks to generate divided pictures having the same size. An intra divided-picture encoding unit performs intra divided-picture encoding on some divided pictures. A reference picture selection unit selects, as a reference picture, an encoded divided picture in which a pixel position on an original picture is close in order to encode the other encoding target divided pictures. An inter divided-picture predictive encoding unit generates a predicted picture using the selected reference picture and encodes an encoding target divided picture through inter divided-picture prediction in units of divided pictures.