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：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。

公开(公告)号：US08126056B2

公开(公告)日：2012-02-28

申请号：US11980563

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： H04N7/32 ,  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.

公开(公告)号：US20110193728A1

公开(公告)日：2011-08-11

申请号：US13091611

申请日：2011-04-21

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

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

IPC分类号： H03M7/34

CPC分类号： G06T9/005 ,  G11B20/1426 ,  H03M5/145 ,  H03M7/40 ,  H03M7/46 ,  H04N19/13 ,  H04N19/134 ,  H04N19/136 ,  H04N19/162 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60 ,  H04N19/61 ,  H04N19/69 ,  H04N19/89 ,  H04N19/93

摘要： An image coding apparatus provides a run-length encoding unit RLE1 that subjects quantized coefficients which are obtained by quantizing frequency components of an image signal to a variable length coding process by using a run value Run that indicates the number of successive zero coefficients and a level value Lev that indicates a value of a non-zero coefficient following the zero coefficients. The run-length encoding unit RLE1 includes a reordering unit Lreodr for reordering level values Lev; a variable length coder LVLC for coding reordered level values ROLev by using a code table that is selected according to the value of a quantization parameter QP; a reordering unit Rreodr for reordering run values Run from high frequency component of the quantized coefficients to low frequency component; and a variable length coder RVLC for coding reordered run values RORun by using a code table that is selected according to the number of already-processed run values

摘要翻译： 图像编码装置提供游程长度编码单元RLE1，该游程长度编码单元RLE1对通过使用指示连续零系数的数量的运行值Run和可变长度编码处理的等级来计算通过将图像信号的频率分量量化为可变长度编码处理而获得的量化系数 值Lev，其表示零系数之后的非零系数的值。 游程长度编码单元RLE1包括用于重新排列水平值Lev的重排序单元Lreodr; 可变长度编码器LVLC，用于通过使用根据量化参数QP的值选择的码表来对重新排序的电平值ROLev进行编码; 用于重新排序运行值的重新排序单元Rreodr从量化系数的高频分量运行到低频分量; 以及可变长度编码器RVLC，用于通过使用根据已经处理的运行值的数量选择的代码表来对重新排序的运行值RORun进行编码

公开(公告)号：US07864838B2

公开(公告)日：2011-01-04

申请号：US10491174

申请日：2003-09-22

申请人： Shinya Kadono ,  Satoshi Kondo ,  Kiyofumi Abe

发明人： Shinya Kadono ,  Satoshi Kondo ,  Kiyofumi Abe

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

CPC分类号： H04N19/16 ,  H04N19/105 ,  H04N19/112 ,  H04N19/176 ,  H04N19/196 ,  H04N19/70

摘要： A weighting factor mode determination unit determines whether to code an interlaced picture in a field mode or a frame mode, based on a value of a flag “AFF” indicating whether or not to switch between the field mode and the frame mode on a block-by-block basis and notifies switches and a multiplexing unit of the determined mode. The switches select either the field mode or the frame mode according to the notified mode. A field weighting factor coding unit or a frame weighting factor coding unit performs respectively the coding of respective weighting factors when the respective modes are selected.

摘要翻译： 加权系数模式确定单元基于在块模式决定单元中的表示是否在场模式和帧模式之间切换的标志“AFF”的值来确定是否以场模式或帧模式对隔行扫描图像进行编码， 并通知所述确定模式的开关和多路复用单元。 交换机根据通知模式选择现场模式或帧模式。 当选择各个模式时，场权重因子编码单元或帧加权因子编码单元分别执行各个加权因子的编码。

公开(公告)号：US07769238B2

公开(公告)日：2010-08-03

申请号：US11976758

申请日：2007-10-26

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：US20100141485A1

公开(公告)日：2010-06-10

申请号：US12708884

申请日：2010-02-19

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

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

IPC分类号： H03M7/40

CPC分类号： G06T9/005 ,  G11B20/1426 ,  H03M5/145 ,  H03M7/40 ,  H03M7/46 ,  H04N19/13 ,  H04N19/134 ,  H04N19/136 ,  H04N19/162 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60 ,  H04N19/61 ,  H04N19/69 ,  H04N19/89 ,  H04N19/93

摘要： An image coding apparatus provides a run-length encoding unit RLE1 that subjects quantized coefficients which are obtained by quantizing frequency components of an image signal to a variable length coding process by using a run value Run that indicates the number of successive zero coefficients and a level value Lev that indicates a value of a non-zero coefficient following the zero coefficients. The run-length encoding unit RLE1 includes a reordering unit Lreodr for reordering level values Lev; a variable length coder LVLC for coding reordered level values ROLev by using a code table that is selected according to the value of a quantization parameter QP; a reordering unit Rreodr for reordering run values Run from high frequency component of the quantized coefficients to low frequency component; and a variable length coder RVLC for coding reordered run values RORun by using a code table that is selected according to the number of already-processed run values

摘要翻译： 图像编码装置提供游程长度编码单元RLE1，该游程长度编码单元RLE1对通过使用指示连续零系数的数量的运行值Run和可变长度编码处理的等级来计算通过将图像信号的频率分量量化为可变长度编码处理而获得的量化系数 值Lev，其表示零系数之后的非零系数的值。 游程长度编码单元RLE1包括用于重新排列水平值Lev的重排序单元Lreodr; 可变长度编码器LVLC，用于通过使用根据量化参数QP的值选择的码表来对重新排序的电平值ROLev进行编码; 用于重新排序运行值的重新排序单元Rreodr从量化系数的高频分量运行到低频分量; 以及可变长度编码器RVLC，用于通过使用根据已经处理的运行值的数量选择的代码表来对重新排序的运行值RORun进行编码

公开(公告)号：US07649944B2

公开(公告)日：2010-01-19

申请号：US11980535

申请日：2007-10-31

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

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

IPC分类号： H04B1/66 ,  H04N7/12

CPC分类号： H04N19/52 ,  G06F1/03 ,  G06F2101/12 ,  H04N19/105 ,  H04N19/124 ,  H04N19/172 ,  H04N19/176 ,  H04N19/30 ,  H04N19/43 ,  H04N19/503 ,  H04N19/51 ,  H04N19/513 ,  H04N19/577 ,  H04N19/587 ,  H04N19/61 ,  H04N19/625 ,  H04N21/2743

摘要： A motion vector derivation unit includes a comparison unit for comparing a parameter TR1 for a reference vector with a predetermined value to determine whether it exceeds the predetermined value or not; a switching unit for switching selection between the maximum value of a pre-stored parameter TR and the parameter TR1 according to the comparison result by the comparison unit; a multiplier parameter table (for multipliers); and a multiplier parameter table (for divisors) for associating the parameter TR1 with a value approximate to the inverse value (1/TR1) of this parameter TR1.

摘要翻译： 运动矢量导出单元包括比较单元，用于将参考矢量的参数TR1与预定值进行比较，以确定其是否超过预定值; 切换单元，用于根据比较单元的比较结果切换预存储参数TR的最大值与参数TR1之间的选择; 乘数参数表（用于乘数）; 以及用于将参数TR1与接近该参数TR1的反相值（1 / TR1）的值相关联的乘数参数表（用于除数）。