公开(公告)号：US08396132B2

公开(公告)日：2013-03-12

申请号：US12724809

申请日：2010-03-16

申请人： Kiyofumi Abe ,  Shinya Kadono ,  Makoto Hagai ,  Satoshi Kondo

发明人： Kiyofumi Abe ,  Shinya Kadono ,  Makoto Hagai ,  Satoshi Kondo

IPC分类号： H04N11/02

CPC分类号： H04N19/00024 ,  H04N19/105 ,  H04N19/114 ,  H04N19/115 ,  H04N19/14 ,  H04N19/149 ,  H04N19/156 ,  H04N19/162 ,  H04N19/164 ,  H04N19/177 ,  H04N19/51 ,  H04N19/573 ,  H04N19/58 ,  H04N19/61

摘要： A moving picture coding apparatus (10a) according to the present invention includes a level analyzer (100a) that decides the maximum number of intra frame pixels which can be coded (Nfpx) and the maximum number of storage pixels which can be stored in a picture memory of a decoding apparatus (Nspx) on the basis of a level identifier (Lst) indicating a coding level that is designated by the user, thereby judging whether coding of an input image is possible or not and calculating the maximum number of reference pictures (Nrpn) as the number of reference candidate pictures which can be referred to at inter picture prediction coding, on the basis of the maximum number of intra frame pixels (Nfpx) and the input image size (the number of vertical pixels (Nhpx) and the number of horizontal pixels (Nwpx)). A decoding apparatus to which a bit stream from the moving picture coding apparatus (10a) is supplied can always decode the bit stream satisfactorily, and perform inter picture prediction decoding corresponding to the inter picture prediction coding on the coding end. Consequently, memory areas of a coding apparatus and a decoding apparatus that are adapted to a coding method in which there is no restraint on the capacity of the memory area can be designed.

摘要翻译： 根据本发明的运动图像编码装置（10a）包括：电平分析器（100a），其决定可编码的帧内像素的最大数目（Nfpx）和可以存储在图像中的最大存储像素数 基于指示用户指定的编码电平的电平识别符（Lst），解码装置（Nspx）的存储器，从而判断输入图像的编码是否可行，并且计算参考图像的最大数量（ Nrpn）作为帧间预测编码时可参照的参考候选图像的数量，基于帧内像素的最大数目（Nfpx）和输入图像大小（垂直像素数（Nhpx））和 水平像素数（Nwpx））。 提供来自运动图像编码装置（10a）的比特流的解码装置可以令人满意地解码比特流，并且对编码结束中的帧间预测编码执行帧间预测解码。 因此，可以设计适合于对存储区域的容量没有约束的编码方法的编码装置和解码装置的存储区域。

公开(公告)号：US08290286B2

公开(公告)日：2012-10-16

申请号：US12240379

申请日：2008-09-29

申请人： Kiyofumi Abe ,  Shinya Kadono ,  Satoshi Kondo ,  Makoto Hagai

发明人： Kiyofumi Abe ,  Shinya Kadono ,  Satoshi Kondo ,  Makoto Hagai

IPC分类号： G06K9/36 ,  H04N7/12 ,  H03M7/40

CPC分类号： G06T9/004 ,  H04N19/105 ,  H04N19/11 ,  H04N19/13 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593 ,  H04N19/60 ,  H04N19/61

摘要： The method includes the following units: a coefficient number detecting unit (109) for detecting the number of coefficients which has a value other than 0 for each block according to the generated coefficient, a coefficient number storing unit (110) for storing the number of coefficients detected, a coefficient number coding unit (111) for selecting a table for variable length coding based on the numbers of coefficients in the coded blocks located on the periphery of a current block to be coded with reference to the selected table for variable length coding so as to perform variable length coding for the number of coefficients.

公开(公告)号：US08290049B2

公开(公告)日：2012-10-16

申请号：US12766254

申请日：2010-04-23

申请人： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

发明人： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

IPC分类号： H04N11/02

CPC分类号： H04N19/52 ,  H04N19/103 ,  H04N19/105 ,  H04N19/107 ,  H04N19/127 ,  H04N19/136 ,  H04N19/137 ,  H04N19/159 ,  H04N19/16 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/30 ,  H04N19/423 ,  H04N19/46 ,  H04N19/51 ,  H04N19/513 ,  H04N19/573 ,  H04N19/577 ,  H04N19/58 ,  H04N19/583 ,  H04N19/61 ,  H04N19/70

摘要： When a block (MB22) of which motion vector is referred to in the direct mode contains a plurality of motion vectors, 2 motion vectors MV23 and MV24, which are used for inter picture prediction of a current picture (P23) to be coded, are determined by scaling a value obtained from averaging the plurality of motion vectors or selecting one of the plurality of the motion vectors.

摘要翻译： 当以直接模式参考运动矢量的块（MB22）包含多个运动矢量时，用于要编码的当前图像（P23）的帧间预测的2个运动矢量MV23和MV24是 通过缩放从多个运动矢量的平均得到的值或选择多个运动矢量之一来确定。

公开(公告)号：US08265153B2

公开(公告)日：2012-09-11

申请号：US12570423

申请日：2009-09-30

申请人： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai

发明人： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai

IPC分类号： H04B1/66 ,  H04N7/12

CPC分类号： H04N19/00 ,  H04N19/103 ,  H04N19/105 ,  H04N19/107 ,  H04N19/127 ,  H04N19/136 ,  H04N19/137 ,  H04N19/157 ,  H04N19/159 ,  H04N19/16 ,  H04N19/172 ,  H04N19/176 ,  H04N19/423 ,  H04N19/43 ,  H04N19/44 ,  H04N19/46 ,  H04N19/50 ,  H04N19/51 ,  H04N19/573 ,  H04N19/577 ,  H04N19/58 ,  H04N19/61 ,  H04N19/70

摘要： A moving picture coding apparatus for performing inter-picture predictive coding on pictures constituting a moving picture is provided with a coding unit for performing predictive error coding on image data; a decoding unit for performing predictive error decoding on an output from the coding unit; a reference picture memory for holding output data from the decoding unit; and a motion vector detection unit for detecting forward and backward motion vectors on the basis of decoded image data stored in the memory. When coding a B picture, a picture that is timewise closest to the target picture is used as a candidate picture for forward reference, and an I or P picture that is timewise closest to the target picture is used as a candidate picture for backward reference. The moving picture coding apparatus so constructed can improve coding efficiency of a B picture to be subjected to bidirectional predictive coding.

摘要翻译： 用于对构成运动图像的图像执行画面间预测编码的运动图像编码装置设置有用于对图像数据执行预测误差编码的编码单元; 解码单元，用于对来自编码单元的输出进行预测误差解码; 用于保存来自解码单元的输出数据的参考图像存储器; 以及运动矢量检测单元，用于基于存储在存储器中的解码图像数据检测前向和后向运动矢量。 当对B图像进行编码时，将最接近目标图像的图像用作用于正向参考的候选图像，并且使用时间上最接近目标图像的I图像或P图像作为用于反向参考的候选图像。 这样构成的运动图像编码装置能够提高要进行双向预测编码的B图像的编码效率。

公开(公告)号：US08254468B2

公开(公告)日：2012-08-28

申请号：US11928517

申请日：2007-10-30

申请人： Zhong Xue ,  Sheng Mei Shen ,  Teck Wee Foo ,  Chak Joo Lee ,  Shinya Kadono

发明人： Zhong Xue ,  Sheng Mei Shen ,  Teck Wee Foo ,  Chak Joo Lee ,  Shinya Kadono

IPC分类号： H04N7/12

CPC分类号： H04N19/80 ,  G06T5/001 ,  H04N19/105 ,  H04N19/112 ,  H04N19/117 ,  H04N19/124 ,  H04N19/136 ,  H04N19/137 ,  H04N19/14 ,  H04N19/154 ,  H04N19/157 ,  H04N19/159 ,  H04N19/16 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/46 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86

摘要： A coding distortion removal method for removing coding distortion in an image which was has been divided in to a plurality of macroblocks. The method operates under the following conditions such that: (i) a size of a pixel in a motion compensation block is smaller than a size of a pixel in said macroblock; (ii) a size of a pixel in a motion compensation block is larger than a size of a pixel in a coding unit; and (iii) a pixel difference between two adjacent motion compensation blocks located inside the macroblock is zero. The method disables the coding distortion removal at a boundary between blocks located inside each of the two adjacent motion compensation blocks, and enables the coding distortion removal at a boundary between the two adjacent motion compensation blocks.

摘要翻译： 一种用于去除被划分为多个宏块的图像中的编码失真的编码失真去除方法。 该方法在以下条件下操作，使得：（i）运动补偿块中的像素的大小小于所述宏块中的像素的大小; （ii）运动补偿块中的像素的大小大于编码单元中的像素的大小; 和（iii）位于宏块内的两个相邻运动补偿块之间的像素差为零。 该方法禁止在位于两个相邻运动补偿块的每一个内的块之间的边界处的编码失真去除，并且使得能够在两个相邻运动补偿块之间的边界处的编码失真去除。

公开(公告)号：US08194759B2

公开(公告)日：2012-06-05

申请号：US11979014

申请日：2007-10-30

申请人： Makoto Hagai ,  Shinya Kadono

发明人： Makoto Hagai ,  Shinya Kadono

IPC分类号： H04N7/12

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/14 ,  H04N19/156 ,  H04N19/159 ,  H04N19/162 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/46 ,  H04N19/527 ,  H04N19/61 ,  H04N19/82

摘要： A picture coding apparatus (300) is a picture coding apparatus that codes a difference between picture data (Img) representing an input picture and predictive picture data (Pred) representing a predictive picture for the input picture and generates coded picture data, and includes a picture decoding unit (104) for decoding coded picture data (Img) after the picture data (Img) is coded; inter pixel filters A and B (303 and 304) for performing inter pixel filter operation for decoded picture data (Recon) obtained by the picture decoding unit (104); switches (301 and 302) for selecting one of the inter pixel filters; and an inter picture predicting unit (108) for generating the predictive picture data (Pred) for the input picture data (Img) using filtered decoded picture data (FilteredImg1), as reference picture data (Ref), obtained by the selected inter pixel filter.

摘要翻译： 图像编码装置（300）是编码表示输入图像的图像数据（Img）与表示输入图像的预测图像的预测图像数据（Pred）之间的差的图像编码装置，生成编码图像数据，并且包括 在图像数据（Img）被编码之后，解码编码图像数据（Img）的图像解码单元（104） 用于对由图像解码单元（104）获得的解码图像数据（Recon）执行像素间滤波操作的像素间滤波器A和B（303和304）; 用于选择所述像素间滤波器之一的开关（301和302） 以及帧间预测单元，用于使用经过滤波的解码图像数据（FilteredImg1）作为参考图像数据（Ref），通过所选择的像素间滤波器（Ref）产生用于输入图像数据（Img）的预测图像数据（Pred） 。

公开(公告)号：US08179963B2

公开(公告)日：2012-05-15

申请号：US10563357

申请日：2004-07-23

申请人： Youji Shibahara ,  Shinya Kadono

发明人： Youji Shibahara ,  Shinya Kadono

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC分类号： H04N19/146 ,  H04N19/51 ,  H04N19/523 ,  H04N19/57

摘要： The invention provides an apparatus enabling a selection of an appropriate coding mod. This apparatus determines one of a plurality of candidate coding modes of an image block. A full-pel prediction step derives a coding cost of each coding mode, based on motion estimation with integer pixel accuracy for small blocks, which are obtained with division methods of each coding mode. A candidate division method selecting step selects a subset of candidate division methods of a plurality of coding modes, based on the coding costs derived by the full-pel prediction). A sub-pel prediction step derives a coding cost of each candidate division method, based on motion estimation with non-integer pixel accuracy for the small blocks obtained with a subset of the subset of candidate division methods. A division method determining step determines a division method of the image block, based on the coding costs derived by the sub-pel prediction.

摘要翻译： 本发明提供一种能够选择适当编码模式的装置。 该装置确定图像块的多个候选编码模式之一。 基于每个编码模式的分割方法获得的基于小块的整数像素精度的运动估计，全像素预测步骤导出每个编码模式的编码成本。 候选分割方法选择步骤基于由全像素预测导出的编码成本，选择多种编码模式的候选分割方法的子集）。 子像素预测步骤基于用候选分割方法的子集的子集获得的小块的非整数像素精度的运动估计，导出每个候选分割方法的编码成本。 分割方法确定步骤基于由子像素预测导出的编码成本，确定图像块的分割方法。

公开(公告)号：US08160147B2

公开(公告)日：2012-04-17

申请号：US11980661

申请日：2007-10-31

申请人： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

发明人： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04B1/66

CPC分类号： H04N19/61 ,  H04N19/176 ,  H04N19/51 ,  H04N19/513 ,  H04N19/517 ,  H04N19/52 ,  H04N19/573

摘要： A motion vector coding method and apparatus that improves efficiency of coding motion vectors when a current block is coded using a plurality of motion vectors. The apparatus includes a motion vector coding unit that codes a motion vector inputted from a motion vector detecting unit. A motion vector for each current block is coded based on a difference between the motion vector and a predicted vector obtained from motion vectors for previously coded neighboring blocks. The predicted vector is generated by one of the following processes: (A) the motion vectors which refer to the same picture are selected from among the motion vectors for the neighboring blocks so as to generate the predicted vector; (B) the motion vectors for the respective neighboring blocks are ordered in the predetermined order, and the motion vectors of the same order rank are selected from the ordered motion vectors so as to generate the predicted vector; and (C) the predicted vector for the second motion vector of the current block shall be the first motion vector, and if the second motion vector and the first motion vector refer to different pictures, the first motion vector is scaled according to the temporal distance between the pictures so as to generate the predicted vector.

摘要翻译： 一种使用多个运动矢量对当前块进行编码时提高编码运动矢量效率的运动矢量编码方法和装置。 该装置包括对从运动矢量检测单元输入的运动矢量进行编码的运动矢量编码单元。 基于运动矢量与从先前编码的相邻块的运动矢量获得的预测矢量之间的差来对每个当前块的运动矢量进行编码。 通过以下处理之一生成预测矢量：（A）从相邻块的运动矢量中选择引用相同图像的运动矢量，以生成预测矢量; （B）各个相邻块的运动矢量以预定顺序排列，从有序运动矢量中选择相同次序秩的运动矢量，以产生预测矢量; 和（C）当前块的第二运动矢量的预测矢量应为第一运动矢量，如果第二运动矢量和第一运动矢量指的是不同的图像，则第一运动矢量根据时间距离 在图像之间产生预测矢量。

公开(公告)号：US08155188B2

公开(公告)日：2012-04-10

申请号：US11980618

申请日：2007-10-31

申请人： Kiyofumi Abe ,  Shinya Kadono ,  Satoshi Kondo

发明人： Kiyofumi Abe ,  Shinya Kadono ,  Satoshi Kondo

IPC分类号： H04N7/12

CPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/112 ,  H04N19/119 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/573 ,  H04N19/577 ,  H04N19/61 ,  H04N19/70

摘要： A moving picture coding method for coding a picture with switching between frame coding and field coding adaptively on a block-by-block basis includes: determining the maximum number of reference indices for field coding for specifying fields which are to be referred to at the time of field coding, using the maximum number of reference indices for frame coding for specifying frames which are to be referred to at the time of frame coding; and assigning to fields the reference indices for field coding for specifying fields which are to be referred to at the time of field coding, within a range of the determined maximum number thereof, using the reference indices for frame coding for specifying frames which are to be referred to at the time of frame coding.

摘要翻译： 一种用于在逐块基础上自适应地切换帧编码和场编码的图像编码的运动图像编码方法包括：确定用于字段编码的参考索引的最大数量，用于指定当时将被引用的字段 使用用于帧编码的参考索引的最大数目来指定帧编码时将要参考的帧的场编码; 并且在所确定的最大数量的范围内，使用用于指定将要被指定的帧的帧编码的参考索引，向字段分配用于指定字段编码时要参考的字段的字段编码的参考索引 在帧编码时参考。

公开(公告)号：US08126057B2

公开(公告)日：2012-02-28

申请号：US11980598

申请日：2007-10-31

申请人： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai

发明人： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai

IPC分类号： H04N7/12 ,  H04N11/02

CPC分类号： H04N19/00 ,  H04N19/103 ,  H04N19/105 ,  H04N19/107 ,  H04N19/127 ,  H04N19/136 ,  H04N19/137 ,  H04N19/157 ,  H04N19/159 ,  H04N19/16 ,  H04N19/172 ,  H04N19/176 ,  H04N19/423 ,  H04N19/43 ,  H04N19/44 ,  H04N19/46 ,  H04N19/50 ,  H04N19/51 ,  H04N19/573 ,  H04N19/577 ,  H04N19/58 ,  H04N19/61 ,  H04N19/70

摘要： A moving picture coding apparatus performs inter-picture predictive coding on pictures constituting a moving picture and includes a coding unit for performing predictive error coding on image data; a decoding unit for performing predictive error decoding on an output from the coding unit; a reference picture memory for holding output data from the decoding unit; and a motion vector detection unit for detecting forward and backward motion vectors on the basis of decoded image data stored in the memory. When coding a B picture, a picture that is timewise closest to the target picture is used as a candidate picture for forward reference, and an I or P picture that is timewise closest to the target picture is used as a candidate picture for backward reference.

摘要翻译： 运动图像编码装置对构成运动图像的图像执行画面间预测编码，并且包括用于对图像数据进行预测误差编码的编码单元; 解码单元，用于对来自编码单元的输出进行预测误差解码; 用于保存来自解码单元的输出数据的参考图像存储器; 以及运动矢量检测单元，用于基于存储在存储器中的解码图像数据检测前向和后向运动矢量。 当对B图像进行编码时，将最接近目标图像的图像用作用于正向参考的候选图像，并且使用时间上最接近目标图像的I图像或P图像作为用于反向参考的候选图像。