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1. 发明授权

US08565307B2 Picture encoding method and picture encoding device 失效
标题翻译：图像编码方法和图像编码装置
公开(公告)号：US08565307B2
公开(公告)日：2013-10-22
申请号：US11587414
申请日：2005-12-26
申请人： Naoki Matsuda , Youji Shibahara , Shinya Kadono
发明人： Naoki Matsuda , Youji Shibahara , Shinya Kadono
IPC分类号： H04N11/02
CPC分类号： H04N19/577 , H04N19/105 , H04N19/107 , H04N19/119 , H04N19/134 , H04N19/139 , H04N19/152 , H04N19/176 , H04N19/51 , H04N19/517 , H04N19/61
摘要： For encoding of a picture whose macroblock is divided into parts of various sizes, a picture encoding method is provided to appropriately reduce a coding amount of a motion vector, without lowering coding efficiency. In order to reduce a processing amount and an increase of a coding amount, which result from generation of a large number of motion vectors due to bi-directional prediction selected for a small-sized part, a motion estimation unit selects the optimal prediction method from prediction method candidates decided by a prediction-method-candidate determination unit. Thereby, when motion compensation is performed for a large-sized part, forward-directional, backward-directional, and bi-directional prediction can be permitted. On the other hand when motion compensation is performed for a small-sized part, the bi-directional prediction is prohibited but the forward-directional or backward-directional prediction is permitted.
摘要翻译：对于将宏块划分为各种大小的部分的图像的编码，提供了一种图像编码方法，以适当地减小运动矢量的编码量，而不降低编码效率。为了减少由于针对小型部分选择的双向预测而产生大量运动矢量而产生的编码量的处理量和增加，运动估计单元从由预测方法候选确定单元确定的预测方法候选。因此，当对大尺寸部分进行运动补偿时，可以允许前向，后向和双向的预测。另一方面，当对小尺寸部分进行运动补偿时，禁止双向预测，但允许前向或后向预测。

2. 发明申请

US20070217512A1 Picture Encoding Method and Picture Encoding Device 失效
标题翻译：图像编码方法和图像编码装置
公开(公告)号：US20070217512A1
公开(公告)日：2007-09-20
申请号：US11587414
申请日：2005-12-26
申请人： Naoki Matsuda , Youji Shibahara , Shinya Kadono
发明人： Naoki Matsuda , Youji Shibahara , Shinya Kadono
IPC分类号： H04N11/02 , H04N11/04
CPC分类号： H04N19/577 , H04N19/105 , H04N19/107 , H04N19/119 , H04N19/134 , H04N19/139 , H04N19/152 , H04N19/176 , H04N19/51 , H04N19/517 , H04N19/61
摘要： For encoding of a picture whose macroblock is divided into parts of various sizes, a picture encoding method is provided to appropriately reduce a coding amount of a motion vector, without lowering coding efficiency. In order to reduce a processing amount and an increase of a coding amount, which result from generation of a large number of motion vectors due to bi-directional prediction selected for a small-sized part, a motion estimation unit (112) selects the optimal prediction method from prediction method candidates decided by a prediction-method-candidate determination unit (13). Thereby, when motion compensation is performed for a large-sized part, forward-directional, backward-directional, and bi-directional prediction can be permitted. On the other hand when motion compensation is performed for a small-sized part, the bi-directional prediction is prohibited but the forward-directional or backward-directional prediction is permitted.
摘要翻译：对于将宏块划分为各种大小的部分的图像的编码，提供了一种图像编码方法，以适当地减小运动矢量的编码量，而不降低编码效率。为了减少由于为小尺寸部选择的双向预测而产生大量运动矢量而产生的编码量的处理量和增加，运动估计单元（112）选择最优由预测方法候选确定单元（13）确定的预测方法候选的预测方法。因此，当对大尺寸部分进行运动补偿时，可以允许前向，后向和双向的预测。另一方面，当对小尺寸部分进行运动补偿时，禁止双向预测，但允许前向或后向预测。

3. 发明授权

US08179963B2 Coding mode determining apparatus, image coding apparatus, coding mode determining method and coding mode determining program 有权
标题翻译：编码模式确定装置，图像编码装置，编码模式确定方法和编码模式确定程序
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。

4. 发明申请

US20070002948A1 Encoding mode deciding apparatus, image encoding apparatus, encoding mode deciding method, and encoding mode deciding program 有权
标题翻译：编码模式决定装置，图像编码装置，编码模式决定方法以及编码模式决定程序
公开(公告)号：US20070002948A1
公开(公告)日：2007-01-04
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 , H04N11/04 , H04B1/66 , H04N11/02
CPC分类号： H04N19/146 , H04N19/51 , H04N19/523 , H04N19/57
摘要： The invention provides a coding mode determining apparatus that enables selection of an appropriate coding mode with a smaller processing amount. This coding mode determining apparatus is an apparatus that determines at least one of a plurality of candidate coding modes of an image block. A full-pel prediction step (S41) derives a coding cost of each of the coding modes, based on motion estimation with integer pixel accuracy for small blocks, which are partitions of the image block that are obtained with the division methods of each of the coding modes. A candidate division method selecting step (S42) selects a subset of candidate division methods of a plurality of coding modes, based on the coding costs derived by the full-pel prediction step (S41). A sub-pel prediction step (S43) derives a coding cost of each of the candidate division methods, based on motion estimation with non-integer pixel accuracy for the small blocks obtained with at least a subset of the subset of candidate division methods. A division method determining step (S44) determines a division method of the image block, based on the coding costs derived by the sub-pel prediction step (S43).
摘要翻译：本发明提供一种编码模式确定装置，其能够以较小的处理量选择适当的编码模式。该编码模式确定装置是确定图像块的多个候选编码模式中的至少一个的装置。全像素预测步骤（S41）基于用于小块的整数像素精度的运动估计来导出每个编码模式的编码成本，该小块是使用每个编码模式的分割方法获得的图像块的分区编码模式。候选分割方法选择步骤（S42）基于由全像素预测步骤导出的编码成本，选择多种编码模式的候选分割方法的子集（S41）。子像素预测步骤（S 43）基于用候选分割方法的子集的至少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（S44）基于由子像素预测步骤导出的编码成本来确定图像块的分割方法（S43）。

5. 发明申请

US20050190844A1 Motion estimation method and moving picture coding method 有权
标题翻译：运动估计方法和运动图像编码方法
公开(公告)号：US20050190844A1
公开(公告)日：2005-09-01
申请号：US11063871
申请日：2005-02-23
申请人： Shinya Kadono , Youji Shibahara
发明人： Shinya Kadono , Youji Shibahara
IPC分类号： H04N5/14 , H04N7/12 , H04N7/26 , H04N7/36 , H04N7/50
CPC分类号： H04N19/533 , H04N5/145 , H04N19/61 , H04N21/41422 , H04N21/6143
摘要： The motion vector estimation unit (106) is comprised of: an error calculation unit (202) that calculates errors SAD1 to SAD9 that are differences between the current block data tar_img and the respective neighboring reference block data ref_img; a minimum-error block determination unit (203) that determines, as a minimum-error block, a reference block that includes the smallest error of all the errors SAD1 to SAD9, and outputs a motion vector mvmin corresponding to the position of the determined minimum-error block; an end judgment unit (204) that judges whether or not the motion estimation should be ended; and a search center determination unit (205) that determines, as a reference block serving as the next search center, a reference block that is two pixels or more away from the current search center, according to the position of the minimum-error block.
摘要翻译：运动矢量估计单元（106）包括：误差计算单元（202），其计算作为当前块数据tar_img和各个相邻参考块数据ref_img之间的差的误差SAD 1至SAD 9; 确定作为最小误差块的包括所有误差SAD 1至SAD 9的最小误差的参考块的最小误差块确定单元（203），并且输出与所述差分块的位置相对应的运动矢量mvmin 确定的最小误差块; 判断运动估计是否应该结束的结束判断单元（204）以及搜索中心确定单元，其根据最小误差块的位置，将作为下一个搜索中心的参考块确定为距离当前搜索中心两个或更多个的参考块。

6. 发明授权

US07894526B2 Motion estimation method and moving picture coding method 有权
标题翻译：运动估计方法和运动图像编码方法
公开(公告)号：US07894526B2
公开(公告)日：2011-02-22
申请号：US11063871
申请日：2005-02-23
申请人： Shinya Kadono , Youji Shibahara
发明人： Shinya Kadono , Youji Shibahara
IPC分类号： H04N7/12
CPC分类号： H04N19/533 , H04N5/145 , H04N19/61 , H04N21/41422 , H04N21/6143
摘要： The motion vector estimation unit (106) is comprised of: an error calculation unit (202) that calculates errors SAD1 to SAD9 that are differences between the current block data tar_img and the respective neighboring reference block data ref_img; a minimum-error block determination unit (203) that determines, as a minimum-error block, a reference block that includes the smallest error of all the errors SAD1 to SAD9, and outputs a motion vector mvmin corresponding to the position of the determined minimum-error block; an end judgment unit (204) that judges whether or not the motion estimation should be ended; and a search center determination unit (205) that determines, as a reference block serving as the next search center, a reference block that is two pixels or more away from the current search center, according to the position of the minimum-error block.
摘要翻译：运动矢量估计单元（106）包括：误差计算单元（202），其计算作为当前块数据tar_img和相应的相邻参考块数据ref_img之间的差的误差SAD1至SAD9; 确定作为最小误差块的包含所有误差SAD1至SAD9的最小误差的参考块的最小误差块确定单元（203），并输出与所确定的最小值的位置相对应的运动矢量mvmin 错误块判断运动估计是否应该结束的结束判断单元（204）以及搜索中心确定单元，其根据最小误差块的位置，确定作为下一个搜索中心的参考块，离开当前搜索中心两个或更多个的参考块。

7. 发明申请

US20100150240A1 REFERENCE PICTURE SELECTION METHOD AND APPARATUS 失效
标题翻译：参考图片选择方法和装置
公开(公告)号：US20100150240A1
公开(公告)日：2010-06-17
申请号：US12089126
申请日：2006-10-02
申请人： Viktor Wahadaniah , Chong Soon Lim , Youji Shibahara , Shinya Kadono
发明人： Viktor Wahadaniah , Chong Soon Lim , Youji Shibahara , Shinya Kadono
IPC分类号： H04N7/26
CPC分类号： H04N19/577 , H04N19/107 , H04N19/109 , H04N19/137 , H04N19/16 , H04N19/51 , H04N19/573
摘要： The reference picture selection method according to the present invention is a method for selecting a reference picture for a current bottom field, and includes: predicting a degree of a motion of the current bottom field using a specific field which precedes the current bottom field in coding order; setting reference picture candidates suitable for coding the current bottom field based on the predicted degree of motion; and selecting a reference picture of the current bottom field among the set reference picture candidates.
摘要翻译：根据本发明的参考图像选择方法是用于选择当前底场的参考图像的方法，并且包括：使用在编码中的当前底部场之前的特定场来预测当前底场的运动程度订购; 基于预测的运动程度设置适合于编码当前底部场景的参考图像候选; 以及在所设置的参考图像候选中选择当前底部场的参考图像。

8. 发明申请

US20050207496A1 Moving picture coding apparatus 审中-公开
标题翻译：运动图像编码装置
公开(公告)号：US20050207496A1
公开(公告)日：2005-09-22
申请号：US11078481
申请日：2005-03-14
申请人： Daisaku Komiya , Youji Shibahara , Shinya Kadono
发明人： Daisaku Komiya , Youji Shibahara , Shinya Kadono
IPC分类号： H04N7/26 , H04N7/36 , H04N7/46 , H04N7/50 , H04N7/12
CPC分类号： H04N19/105 , H04N19/15 , H04N19/176 , H04N19/51 , H04N19/517 , H04N19/523 , H04N19/533 , H04N19/577 , H04N19/61 , H04N19/80
摘要： A motion vector estimation circuit (101) interpolates, with sub-pixel precision, a prediction block indicated by a motion vector estimated with integer-pixel precision as well as a region around the prediction block within a search area in a reference picture, using a 2-tap pixel interpolator (605), and estimates two or more motion vectors indicating positions of prediction blocks having high correlation with a current block to be coded, within the interpolated region. A motion compensation circuit (102) interpolates, with sub-pixel precision, each of the prediction blocks indicated by the estimated motion vectors, using a 6-tap pixel interpolator (901), compares the coding costs of the interpolated prediction blocks, and determines a motion vector indicating a position of a prediction block having highest correlation with the current block, from among the estimated motion vectors. As mentioned above, the number of motion vector candidates is narrowed down by sub-pixel precision motion prediction using a reference image created by a 2-tap filter, and then motion compensation is performed on these motion vector candidates using a 6-tap filter. Therefore, it becomes possible to achieve moving picture compression performance as high as sub-pixel precision motion prediction using a reference image created by a 6-tap filter.
摘要翻译：运动矢量估计电路（101）以子像素精度内插由以像素精度估计的运动矢量表示的预测块以及参考图像内的搜索区域内的预测块周围的区域，使用 2帧图像像素内插器（605），并且在内插区域内估计指示与要编码的当前块具有高相关性的预测块的位置的两个或更多个运动矢量。运动补偿电路（102）利用6位图像像素内插器（901）以子像素精度内插由所估计的运动矢量表示的每个预测块，比较内插预测块的编码成本，并确定从所估计的运动矢量中，指示与当前块具有最高相关性的预测块的位置的运动矢量。如上所述，使用由2抽头滤波器创建的参考图像，通过子像素精度运动预测来缩小运动矢量候选的数量，然后使用6抽头滤波器对这些运动矢量候选进行运动补偿。因此，可以使用由6抽头滤波器创建的参考图像来实现与子像素精度运动预测一样高的运动图像压缩性能。

9. 发明授权

US08687694B2 Reference picture selection method and apparatus 失效
标题翻译：参考图片选择方法和装置
公开(公告)号：US08687694B2
公开(公告)日：2014-04-01
申请号：US12089126
申请日：2006-10-02
申请人： Viktor Wahadaniah , Chong Soon Lim , Youji Shibahara , Shinya Kadono
发明人： Viktor Wahadaniah , Chong Soon Lim , Youji Shibahara , Shinya Kadono
IPC分类号： H04N7/26
CPC分类号： H04N19/577 , H04N19/107 , H04N19/109 , H04N19/137 , H04N19/16 , H04N19/51 , H04N19/573
摘要： The reference picture selection method according to the present invention is a method for selecting a reference picture for a current bottom field, and includes: predicting a degree of a motion of the current bottom field using a specific field which precedes the current bottom field in coding order; setting reference picture candidates suitable for coding the current bottom field based on the predicted degree of motion; and selecting a reference picture of the current bottom field among the set reference picture candidates.
摘要翻译：根据本发明的参考图像选择方法是用于选择当前底场的参考图像的方法，并且包括：使用在编码中的当前底部场之前的特定场来预测当前底场的运动程度订购; 基于预测的运动程度设置适合于编码当前底部场景的参考图像候选; 以及在所设置的参考图像候选中选择当前底部场的参考图像。

10. 发明授权

US08964839B2 Moving picture coding method, and moving picture decoding method 有权
公开(公告)号：US08964839B2
公开(公告)日：2015-02-24
申请号：US13486358
申请日：2012-06-01
申请人： Satoshi Kondo , Shinya Kadono , Makoto Hagai
发明人： Satoshi Kondo , Shinya Kadono , Makoto Hagai
IPC分类号： H04N19/00 , H04N19/423 , H04N19/51 , H04N19/583 , H04N19/16 , H04N19/44 , H04N19/70 , H04N19/105 , H04N19/107 , H04N19/137 , H04N19/172 , H04N19/176 , H04N19/127 , H04N19/61 , H04N19/136 , H04N19/43 , H04N19/103 , H04N19/577 , H04N19/46 , H04N19/157
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 for pictures constituting a moving picture is provided with a coding unit for performing predictive error coding for image data; a decoding unit for performing predictive error decoding for 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 motion vectors on the basis of the decoded image data stored in the memory. When coding a B picture as a target picture, information indicating whether or not the target picture should be used as a reference picture when coding another picture is added as header information. Therefore, in a decoding apparatus for decoding a bit stream Bs outputted from the moving picture coding apparatus, management of a memory for holding the reference picture can be facilitated on the basis of the header information.

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