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1. 发明授权

US09113139B2 Moving-picture encoding apparatus and moving-picture decoding apparatus 有权
公开(公告)号：US09113139B2
公开(公告)日：2015-08-18
申请号：US13716916
申请日：2012-12-17
申请人： Akiyuki Tanizawa , Taichiro Shiodera , Takeshi Chujoh , Jun Yamaguchi
发明人： Akiyuki Tanizawa , Taichiro Shiodera , Takeshi Chujoh , Jun Yamaguchi
IPC分类号： H04N19/00 , H04N19/103 , H04N19/159 , H04N19/176 , H04N19/147 , H04N19/122 , H04N19/129 , H04N19/11 , H04N19/12 , H04N19/136 , H04N19/18 , H04N19/61
CPC分类号： H04N19/103 , H04N19/11 , H04N19/12 , H04N19/122 , H04N19/129 , H04N19/136 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/18 , H04N19/61 , H04N19/91
摘要： According to one embodiment, an encoding apparatus includes a prediction unit, a classifying unit, a first transformer, a second transformer, an order controller, and an entropy coder. The prediction unit obtains a predictive residual signal to be encoded, by using a mode selected from intra-prediction modes. The first transformer obtains first transformation coefficients by subjecting the signal to an orthogonal transformation by use of a first transformation basis if the selected mode is classified into a mode having a prediction direction. The first transformation basis is preset so that a coefficient density after the orthogonal transformation is higher than a coefficient density.

2. 发明申请

US20130107955A1 MOVING-PICTURE ENCODING APPARATUS AND MOVING-PICTURE DECODING APPARATUS 有权
公开(公告)号：US20130107955A1
公开(公告)日：2013-05-02
申请号：US13716916
申请日：2012-12-17
申请人： Akiyuki TANIZAWA , Taichiro Shiodera , Takeshi Chujoh , Jun Yamaguchi
发明人： Akiyuki TANIZAWA , Taichiro Shiodera , Takeshi Chujoh , Jun Yamaguchi
IPC分类号： H04N7/26 , H04N7/32
CPC分类号： H04N19/103 , H04N19/11 , H04N19/12 , H04N19/122 , H04N19/129 , H04N19/136 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/18 , H04N19/61 , H04N19/91
摘要： According to one embodiment, an encoding apparatus includes a prediction unit, a classifying unit, a first transformer, a second transformer, an order controller, and an entropy coder. The prediction unit obtains a predictive residual signal to be encoded, by using a mode selected from intra-prediction modes. The first transformer obtains first transformation coefficients by subjecting the signal to an orthogonal transformation by use of a first transformation basis if the selected mode is classified into a mode having a prediction direction. The first transformation basis is preset so that a coefficient density after the orthogonal transformation is higher than a coefficient density.

3. 发明授权

US09113138B2 Moving-picture encoding apparatus and moving-picture decoding apparatus 有权
公开(公告)号：US09113138B2
公开(公告)日：2015-08-18
申请号：US13543237
申请日：2012-07-06
申请人： Akiyuki Tanizawa , Taichiro Shiodera , Takeshi Chujoh , Jun Yamaguchi
发明人： Akiyuki Tanizawa , Taichiro Shiodera , Takeshi Chujoh , Jun Yamaguchi
IPC分类号： H04N19/00 , H04N19/103 , H04N19/159 , H04N19/176 , H04N19/147 , H04N19/122 , H04N19/129 , H04N19/11 , H04N19/12 , H04N19/136 , H04N19/18 , H04N19/61
CPC分类号： H04N19/103 , H04N19/11 , H04N19/12 , H04N19/122 , H04N19/129 , H04N19/136 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/18 , H04N19/61 , H04N19/91
摘要： According to one embodiment, an encoding apparatus includes a prediction unit, a classifying unit, a first transformer, a second transformer, an order controller, and an entropy coder. The prediction unit obtains a predictive residual signal to be encoded, by using a mode selected from intra-prediction modes. The first transformer obtains first transformation coefficients by subjecting the signal to an orthogonal transformation by use of a first transformation basis if the selected mode is classified into a mode having a prediction direction. The first transformation basis is preset so that a coefficient density after the orthogonal transformation is higher than a coefficient density.

4. 发明申请

US20090310677A1 IMAGE ENCODING AND DECODING METHOD AND APPARATUS 审中-公开
标题翻译：图像编码和解码方法和装置
公开(公告)号：US20090310677A1
公开(公告)日：2009-12-17
申请号：US12375230
申请日：2006-07-28
申请人： Taichiro Shiodera , Akiyuki Tanizawa , Takeshi Chujoh
发明人： Taichiro Shiodera , Akiyuki Tanizawa , Takeshi Chujoh
IPC分类号： G06K9/36 , G06K9/46 , H04N7/32
CPC分类号： H04N19/19 , H04N19/11 , H04N19/119 , H04N19/147 , H04N19/593 , H04N19/70
摘要： An image encoding apparatus includes a first selector selecting a prediction-order to sub-blocks obtained by further dividing pixel-blocks obtained by dividing a frame of an input-image-signal from predetermined prediction-orders, a second selector selecting, from prediction-modes regulating a manner of referring to an encoded-pixel when a first-prediction-signal of each-sub-block is generated with reference to the encoded-pixel, the number of prediction-modes used in prediction of the first-prediction-signal, a third selector selecting prediction-modes the number of which is the selected number from prediction-modes to use the prediction-modes in prediction of the first-prediction-signal, a generator generating the first-prediction-signal in the selected prediction order by using the selected prediction-modes the number of which is the selected number to generate a second-prediction-signal corresponding to the pixelblock, and an encoder encoding a prediction-residual-error-signal expressing a difference between an image-signal of the pixel-block and the second-prediction-signal to generate encoded data obtained by the prediction-encoding.
摘要翻译：一种图像编码装置包括：第一选择器，对通过对从预定预测顺序划分输入图像信号的帧而获得的像素块进行分割而获得的子块进行预测顺序;第二选择器，参照编码像素生成每个子块的第一预测信号时，调整参考编码像素的方式的模式，用于预测第一预测信号的预测模式的数量从预测模式中选择预测模式的第三选择器，以预测模式预测模式，以在第一预测信号的预测中使用预测模式;生成器，以所选择的预测顺序生成第一预测信号通过使用其选择数量的所选择的预测模式来生成与像素块对应的第二预测信号，以及编码预测残差误差信号expr 提出像素块的图像信号与第二预测信号之间的差异，以生成通过预测编码获得的编码数据。

5. 发明申请

US20100118943A1 METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE 审中-公开
标题翻译：用于编码和解码图像的方法和装置
公开(公告)号：US20100118943A1
公开(公告)日：2010-05-13
申请号：US12522614
申请日：2008-01-09
申请人： Taichiro Shiodera , Akiyuki Tanizawa , Takeshi Chujoh
发明人： Taichiro Shiodera , Akiyuki Tanizawa , Takeshi Chujoh
IPC分类号： H04N7/26
CPC分类号： H04N19/182 , H04N19/105 , H04N19/11 , H04N19/176 , H04N19/593 , H04N19/61
摘要： An image encoding apparatus includes a multidirectional predicting unit configured to predict a plurality of pixel blocks by using an encoded pixel as a reference pixel according to a plurality of prediction modes having different prediction directions to generate a plurality of first prediction signals corresponding to the pixel blocks obtained by dividing a frame of an input image signal a setting unit configured to set a weighting factor depending on the prediction directions of the plurality of prediction modes and a spatial distance between a prediction pixel in the pixel block and the reference pixel, a weighted average unit configured to calculate a weighted average of the plurality of first prediction signals according to the weighting factor to generate one second prediction signal corresponding to the pixel blocks, and an encoding unit configured to encode a prediction residual error signal representing a difference between an image signal of the pixel block and at least the second prediction signal to generate encoded data.
摘要翻译：一种图像编码装置包括：多向预测单元，被配置为根据具有不同预测方向的多个预测模式，通过使用编码像素作为参考像素来预测多个像素块，以生成与像素块对应的多个第一预测信号通过将输入图像信号的帧分割成根据多个预测模式的预测方向设定加权系数的设定单位和像素块中的预测像素与参考像素之间的空间距离的加权平均值被配置为根据加权因子计算多个第一预测信号的加权平均值，以生成与像素块对应的一个第二预测信号;以及编码单元，对表示图像信号之间的差的预测残差信号进行编码的像素块和至少第二预测信号以产生编码数据。

6. 发明申请

US20100135389A1 METHOD AND APPARATUS FOR IMAGE ENCODING AND IMAGE DECODING 审中-公开
标题翻译：用于图像编码和图像解码的方法和装置
公开(公告)号：US20100135389A1
公开(公告)日：2010-06-03
申请号：US12647112
申请日：2009-12-24
申请人： Akiyuki TANIZAWA , Taichiro Shiodera , Takeshi Chujoh
发明人： Akiyuki TANIZAWA , Taichiro Shiodera , Takeshi Chujoh
IPC分类号： H04N7/50
CPC分类号： H04N19/86 , H04N19/117 , H04N19/159 , H04N19/176 , H04N19/61 , H04N19/82
摘要： An image encoding apparatus includes a transform/quantization unit configured to perform transform and quantization with respect to a prediction error signal indicative of a difference value between a predicted image signal and an input image signal in order to generate a quantized transform coefficient, a encoding unit configured to perform entropy encoding with respect to the quantized transform coefficient in order to generate encoded data, a derivation unit configured to derive prediction complexity indicative of a degree of complication of the prediction processing, a determination unit configured to determine filtering strength for a locally decoded image signal to become low as the prediction complexity increases, a filter unit configured to perform deblocking filter processing with respect to the locally decoded image signal in accordance with the filtering strength, and a storage unit configured to store the locally decoded image signal after the deblocking filter processing.
摘要翻译：图像编码装置包括：变换量化部，被配置为对于表示预测图像信号和输入图像信号之间的差值的预测误差信号进行变换和量化，以生成量化的变换系数;编码部被配置为对所述量化变换系数执行熵编码以生成编码数据;导出单元，被配置为导出指示所述预测处理的复杂度的预测复杂度;确定单元，被配置为确定本地解码的滤波强度图像信号随着预测复杂度的增加而变低，滤波单元被配置为根据滤波强度对本地解码图像信号执行解块滤波处理，以及存储单元，被配置为在去块之后存储局部解码的图像信号过滤处理。

7. 发明授权

US10009623B2 Image encoding method and image decoding method 有权
公开(公告)号：US10009623B2
公开(公告)日：2018-06-26
申请号：US13647140
申请日：2012-10-08
申请人： Taichiro Shiodera , Saori Asaka , Akiyuki Tanizawa , Takeshi Chujoh
发明人： Taichiro Shiodera , Saori Asaka , Akiyuki Tanizawa , Takeshi Chujoh
IPC分类号： H04N19/105 , H04N19/119 , H04N19/124 , H04N19/137 , H04N19/139 , H04N19/15 , H04N19/159 , H04N19/176 , H04N19/182 , H04N19/61 , H04N19/70 , H04N19/96 , H04N19/513 , H04N19/52
CPC分类号： H04N19/521 , H04N19/105 , H04N19/109 , H04N19/119 , H04N19/124 , H04N19/137 , H04N19/139 , H04N19/15 , H04N19/159 , H04N19/176 , H04N19/182 , H04N19/52 , H04N19/61 , H04N19/70 , H04N19/96
摘要： According to one embodiment, an image encoding method includes selecting a motion reference block from an encoded pixel block to which an inter prediction is applied. The method includes selecting one or more available blocks from the motion reference block. The method includes selecting a selection block from the available blocks. The method includes generating a predicted image of the encoding target block using motion information of the selection block. The method includes encoding a prediction error between the predicted image and an original image. The method includes encoding selection information specifying the selection block by referring to a code table decided according to a number of the available blocks.

8. 发明申请

US20130028328A1 IMAGE ENCODING METHOD AND IMAGE DECODING METHOD 审中-公开
标题翻译：图像编码方法和图像解码方法
公开(公告)号：US20130028328A1
公开(公告)日：2013-01-31
申请号：US13647124
申请日：2012-10-08
申请人： Taichiro Shiodera , Saori Asaka , Akiyuki Tanizawa , Takeshi Chujoh
发明人： Taichiro Shiodera , Saori Asaka , Akiyuki Tanizawa , Takeshi Chujoh
IPC分类号： H04N7/32
CPC分类号： H04N19/521 , H04N19/105 , H04N19/109 , H04N19/119 , H04N19/124 , H04N19/137 , H04N19/139 , H04N19/15 , H04N19/159 , H04N19/176 , H04N19/182 , H04N19/52 , H04N19/61 , H04N19/70 , H04N19/96
摘要： According to one embodiment, an image encoding method includes selecting a motion reference block from an already-encoded pixel block. The method includes selecting an available block including different motion information from the motion reference block, and selecting a selection block from the available block. The method includes generating a predicted image of the encoding target block using motion information of the selection block. The method includes encoding a prediction error between the predicted image and an original image. The method includes encoding selection information identifying the selection block by referring to a code table decided according to a number of the available block.
摘要翻译：根据一个实施例，图像编码方法包括从已经编码的像素块中选择运动参考块。该方法包括从运动参考块中选择包括不同运动信息的可用块，以及从可用块中选择一个选择块。该方法包括使用选择块的运动信息生成编码对象块的预测图像。该方法包括对预测图像与原始图像之间的预测误差进行编码。该方法包括通过参考根据可用块的数量确定的代码表来对识别选择块的选择信息进行编码。

9. 发明申请

US20100118945A1 METHOD AND APPARATUS FOR VIDEO ENCODING AND DECODING 审中-公开
标题翻译：视频编码和解码的方法和装置
公开(公告)号：US20100118945A1
公开(公告)日：2010-05-13
申请号：US12532057
申请日：2008-03-18
申请人： Naofumi Wada , Takeshi Chujoh , Tadaaki Masuda , Reiko Noda , Akiyuki Tanizawa , Goki Yasuda , Taichiro Shiodera
发明人： Naofumi Wada , Takeshi Chujoh , Tadaaki Masuda , Reiko Noda , Akiyuki Tanizawa , Goki Yasuda , Taichiro Shiodera
IPC分类号： H04N7/32
CPC分类号： H04N19/19 , H04N19/11 , H04N19/119 , H04N19/174 , H04N19/176 , H04N19/593 , H04N19/70
摘要： An video encoding apparatus includes a dividing unit 101 to divide an input image signal into to-be-encoded pixel blocks, a reblocking unit 102 to reblock each of the to-be-encoded pixel blocks to generate a first pixel block and a second pixel block, a first prediction unit 108A to perform prediction for the first pixel block using a first local decoded image corresponding to an encoded pixel to generate a first predicted image, a generation unit to generate a second local decoded image corresponding to the first pixel block using a first prediction error representing the difference between the first pixel block and the first predicted image, a second prediction unit 108B to perform prediction for the second pixel block using the first local decoded image and the second local decoded image to generate a second predicted image, an encoding unit 103-105 to transform and encode the first prediction error and a second prediction error representing the difference between the second pixel block and the second predicted image to generate first encoded data and second encoded data, and a multiplexing unit 111 to multiplex the first encoded data and the second encoded data to generate an encoded bitstream.
摘要翻译：视频编码装置包括：分割单元101，用于将输入图像信号分割成待编码的像素块;重新锁定单元102，重新锁定待编码的像素块中的每一个以产生第一像素块和第二像素块，第一预测单元108A，使用与编码像素相对应的第一局部解码图像来执行第一像素块的预测，以生成第一预测图像;生成单元，用于生成与第一像素块对应的第二局部解码图像，所述第二局部解码图像使用表示第一像素块和第一预测图像之间的差的第一预测误差，使用第一局部解码图像和第二局部解码图像对第二像素块进行预测以生成第二预测图像的第二预测单元108B，编码单元103-105，用于对第一预测误差进行变换和编码，以及表示第二像素b之间的差的第二预测误差锁定和第二预测图像以产生第一编码数据和第二编码数据，以及多路复用单元111，用于复用第一编码数据和第二编码数据以生成编码比特流。

10. 发明申请

US20120121012A1 IMAGE CODING METHOD AND IMAGE DECODING METHOD 有权
标题翻译：图像编码方法和图像解码方法
公开(公告)号：US20120121012A1
公开(公告)日：2012-05-17
申请号：US13358691
申请日：2012-01-26
申请人： Taichiro Shiodera , Shinichiro Koto
发明人： Taichiro Shiodera , Shinichiro Koto
IPC分类号： H04N7/30
CPC分类号： H04N19/00121 , H04N19/124 , H04N19/13 , H04N19/14 , H04N19/176 , H04N19/18 , H04N19/60 , H04N19/61
摘要： According to an embodiment, an image coding method includes a transforming and quantizing step of orthogonally transforming and quantizing each of a plurality of blocks as a unit within a target region of an input image to obtain coefficients; and a variable-length coding step of coding a plurality of coefficient strings each having coefficients of same frequency component among the blocks within the target region by using a plurality of variable length coding schemes: The variable-length coding step includes switching among the variable-length coding schemes for each coefficient string.
摘要翻译：根据实施例，图像编码方法包括：将输入图像的目标区域内的多个块中的每一个正交变换和量化的变换量化步骤，以获得系数; 以及可变长度编码步骤，通过使用多个可变长度编码方案，对目标区域内的各块中的各个具有相同频率成分的系数的多个系数串进行编码。可变长度编码步骤包括：每个系数字符串的长度编码方案。

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