公开(公告)号：US20070092002A1

公开(公告)日：2007-04-26

申请号：US11614126

申请日：2006-12-21

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： H04N11/04 ,  H04B1/66

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： Mosaic-shaped block noise occurs when a compressed video signal is reproduced. This block noise is removed, but removing block noise from every block using a deblocking filter imposes a significant load on the deblocking filter. This load is therefore reduced by determining whether coding distortion removal (deblocking) is necessary, and applying a deblocking filter only when needed.

摘要翻译： 当压缩视频信号被再现时，会发生马赛克状块噪声。 该块噪声被去除，但是使用去块滤波器从每个块去除块噪声对去块滤波器施加了显着的负载。 因此，通过确定是否需要编码失真去除（去块）来减少该负载，并且仅在需要时应用去块滤波器。

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）。

公开(公告)号：US20060269154A1

公开(公告)日：2006-11-30

申请号：US11453062

申请日：2006-06-15

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

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：US20060239350A1

公开(公告)日：2006-10-26

申请号：US11472396

申请日：2006-06-22

申请人： Makoto Hagai ,  Shinya Kadono

发明人： Makoto Hagai ,  Shinya Kadono

IPC分类号： H04N11/04 ,  H04B1/66 ,  H04N11/02 ,  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.

公开(公告)号：US07126989B2

公开(公告)日：2006-10-24

申请号：US10416002

申请日：2002-09-11

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） 以及帧间图像预测单元，用于使用经过滤波的解码图像数据（FilteredImg 1）作为参考图像数据（Ref）生成用于输入图像数据（Img）的预测图像数据（Pred） 过滤。

公开(公告)号：US20060233449A1

公开(公告)日：2006-10-19

申请号：US11453078

申请日：2006-06-15

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

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：US07050502B2

公开(公告)日：2006-05-23

申请号：US10243844

申请日：2002-09-16

申请人： Tomoko Yasunari ,  Shinya Kadono ,  Satoshi Kondo

发明人： Tomoko Yasunari ,  Shinya Kadono ,  Satoshi Kondo

IPC分类号： H04N7/12

CPC分类号： H04N19/137 ,  G06T7/238 ,  H04N5/145 ,  H04N19/51 ,  H04N19/56 ,  H04N19/57

摘要： A method and apparatus for performing motion estimation under a motion estimation mode suitable for an amount of motion within each E-block detects a motion vector with a small amount of computation. A block division section divides a frame to be encoded into E-blocks of a predetermined pixel size. For each target E-block, a motion estimation mode detection section relies on a past motion vector of a predetermined block to predict an amount of motion, and determines a motion estimation mode defining a search area that enables detection of the predicted amount of motion among a plurality of predefined motion estimation modes. If the predicted amount of motion is small, a mode defining a narrow search area and a fine search resolution is selected. If the predicted amount of motion is large, a mode defining a broad search area and a coarse search resolution is selected.

摘要翻译： 在适于每个E块内的运动量的运动估计模式下执行运动估计的方法和装置利用少量的计算来检测运动矢量。 块分割部将要编码的帧划分为预定像素大小的E块。 对于每个目标E块，运动估计模式检测部分依赖于预定块的过去运动矢量来预测运动量，并且确定运动估计模式，其定义能够检测预测运动量的检索区域 多个预定义的运动估计模式。 如果预测的运动量小，则选择定义窄搜索区域和精细搜索分辨率的模式。 如果预测的运动量大，则选择定义广泛搜索区域和粗略搜索分辨率的模式。

公开(公告)号：US06947659B2

公开(公告)日：2005-09-20

申请号：US10751476

申请日：2004-01-06

申请人： Takahiro Nishi ,  Shinya Kadono ,  Choong Seng Boon

发明人： Takahiro Nishi ,  Shinya Kadono ,  Choong Seng Boon

IPC分类号： H04N5/92 ,  G06T9/00 ,  H04N7/08 ,  H04N7/081 ,  H04N7/24 ,  H04N7/50 ,  H04N7/52 ,  H04N19/00 ,  H04N19/46 ,  H04N19/503 ,  H04N19/70 ,  H04N19/85 ,  H04N21/2343 ,  H04N21/235 ,  H04N21/236 ,  H04N21/242 ,  H04N21/43 ,  H04N21/434 ,  H04N21/435 ,  H04N21/6332 ,  H04N21/654 ,  H06N5/91 ,  H04N5/91

CPC分类号： H04N7/52 ,  H04N19/46 ,  H04N21/234318 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/242 ,  H04N21/4307 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/6332 ,  H04N21/654

摘要： A data structure of an image signal includes a reproduction cycle identifier indicating whether the cycle of image display for each frame is variable or not. When the display cycle identifier indicates that the display cycle is fixed, display cycle data is inserted in a header of the coded image data, and data relating to the frame number is inserted in each frame. On the other hand, when the display cycle identifier indicates that the display cycle is variable, display time data is inserted for each frame. Therefore, when decoding and displaying the coded image data having a fixed display cycle, the decoded image data can be displayed by a simple circuit structure, i.e., based on the display cycle data and the frame number data having a relatively small data quantity (bit number), without referring to the display time data having a relatively large data quantity for each frame. Furthermore, this data structure can be applied to a coded image signal having a variable display cycle.

摘要翻译： 图像信号的数据结构包括指示每帧的图像显示周期是否可变的再现周期标识符。 当显示周期标识符指示显示周期固定时，将显示周期数据插入编码图像数据的标题中，并且在每帧中插入与帧号相关的数据。 另一方面，当显示周期标识符指示显示周期是可变的时，针对每个帧插入显示时间数据。 因此，当解码和显示具有固定显示周期的编码图像数据时，解码图像数据可以通过简单的电路结构显示，即，基于显示周期数据和具有相对较小数据量的位数（bit 数字），而不参考每帧具有相对较大数据量的显示时间数据。 此外，该数据结构可以应用于具有可变显示周期的编码图像信号。

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。

公开(公告)号：US20050117642A1

公开(公告)日：2005-06-02

申请号：US10500291

申请日：2003-05-29

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： G06T9/00 ,  H04N7/26 ,  H04N7/36 ,  H04N7/46 ,  H04N7/50 ,  H04N7/12

CPC分类号： H04N19/577 ,  H04N19/105 ,  H04N19/159 ,  H04N19/44 ,  H04N19/46 ,  H04N19/51 ,  H04N19/61

摘要： In the coding method of the present invention, by adding an identification signal for indicating that there is no need to reorder coded pictures in the case where no picture coded by referring to a single or two pictures in the backward direction in display order is included in the sequence data, a restriction on pictures not to refer to any picture except the pictures that are positioned in the temporally forward direction is imposed and pictures are coded in the same order as the display order. Also, in the decoding method, only pictures that are positioned in the temporally forward direction are referred to according to the above-mentioned identification signal and these coded pictures are decoded in the same order as the display order.

摘要翻译： 在本发明的编码方法中，通过添加用于指示不需要对编码图像进行重新排序的识别信号，在不包括以显示顺序参考向后方向的一个或两个图像编码的图像的情况下 序列数据，对图像的限制，不涉及除了位于时间上正向的图像之外的任何图像，并且以与显示顺序相同的顺序对图像进行编码。 此外，在解码方法中，仅根据上述识别信号参考位于时间上正向的图像，并且以与显示顺序相同的顺序对这些编码图像进行解码。