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1. 发明授权

US08718149B2 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：US08718149B2
公开(公告)日：2014-05-06
申请号：US13148957
申请日：2010-10-13
申请人： Takeshi Tanaka , Hisao Sasai
发明人： Takeshi Tanaka , Hisao Sasai
IPC分类号： H04N7/26 , H04N7/50 , H03M7/40
CPC分类号： H04N19/44 , H03M7/4006 , H03M7/4018 , H04N19/13 , H04N19/176 , H04N19/194 , H04N19/46 , H04N19/61 , H04N19/91
摘要： An image coding method for improving coding efficiency by using more appropriate probability information is provided. The image coding method includes: a first coding step of coding a first set of blocks included in a first region sequentially based on first probability information; and a second coding step of coding a second set of blocks included in a second region sequentially based on second probability information. In the first coding step, the first probability information is updated depending on data of a target block to be coded, after coding the target block and before coding a next target block. In the second coding step, the second probability information is updated depending on the first probability information updated in the first coding step, before coding the first target block.
摘要翻译：提供了一种通过使用更合适的概率信息来提高编码效率的图像编码方法。图像编码方法包括：第一编码步骤，基于第一概率信息，顺序地编码包括在第一区域中的第一组块; 以及第二编码步骤，基于第二概率信息顺序地对包括在第二区域中的第二组块进行编码。在第一编码步骤中，根据要编码的目标块的数据，在对目标块进行编码之后并在编码下一个目标块之前更新第一概率信息。在第二编码步骤中，在对第一目标块进行编码之前，根据在第一编码步骤中更新的第一概率信息来更新第二概率信息。

2. 发明申请

US20110317769A1 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：US20110317769A1
公开(公告)日：2011-12-29
申请号：US13148957
申请日：2010-10-13
申请人： Takeshi Tanaka , Hisao Sasai
发明人： Takeshi Tanaka , Hisao Sasai
IPC分类号： H04N7/26
CPC分类号： H04N19/44 , H03M7/4006 , H03M7/4018 , H04N19/13 , H04N19/176 , H04N19/194 , H04N19/46 , H04N19/61 , H04N19/91
摘要： An image coding method for improving coding efficiency by using more appropriate probability information is provided. The image coding method includes: a first coding step (S811) of coding a first set of blocks included in a first region sequentially based on first probability information; and a second coding step (S812) of coding a second set of blocks included in a second region sequentially based on second probability information. In the first coding step (S811), the first probability information is updated depending on data of a target block to be coded, after coding the target block and before coding a next target block. In the second coding step (S812), the second probability information is updated depending on the first probability information updated in the first coding step (S811), before coding the first target block.
摘要翻译：提供了一种通过使用更合适的概率信息来提高编码效率的图像编码方法。图像编码方法包括：基于第一概率信息，顺序地对包含在第一区域中的第一组块进行编码的第一编码步骤（S811）以及基于第二概率信息顺序地对包括在第二区域中的第二组块进行编码的第二编码步骤（S812）。在第一编码步骤（S811）中，根据要编码的目标块的数据，在对目标块进行编码之后并对下一个目标块进行编码之前，更新第一概率信息。在第二编码步骤（S812）中，在对第一目标块进行编码之前，根据第一编码步骤（S811）中更新的第一概率信息来更新第二概率信息。

3. 发明授权

US10841573B2 Methods and apparatuses for encoding and decoding video using multiple reference pictures 有权
公开(公告)号：US10841573B2
公开(公告)日：2020-11-17
申请号：US13983581
申请日：2012-02-07
申请人： Viktor Wahadaniah , Chong Soon Lim , Sue Mon Thet Naing , Takahiro Nishi , Youji Shibahara , Hisao Sasai , Toshiyasu Sugio
发明人： Viktor Wahadaniah , Chong Soon Lim , Sue Mon Thet Naing , Takahiro Nishi , Youji Shibahara , Hisao Sasai , Toshiyasu Sugio
IPC分类号： H04N19/105 , H04N19/61 , H04N19/573
CPC分类号： H04N19/105 , H04N19/573 , H04N19/61
摘要： A video encoding method using reference pictures includes: writing a parameter indicating a temporal level of a reference picture or a period of a type of a reference picture into the reference picture for each of the reference pictures, creating a first list of reference pictures comprising the reference pictures sorted based on the parameter; and encoding a current picture of the video using at least the first list of reference pictures. A video decoding method using a reference pictures includes: parsing a parameter indicating a temporal level of a reference picture or a period of a type of a reference picture from each of the reference pictures; creating a first list of reference pictures comprising the reference pictures sorted based on the parameter; and decoding a current picture of the video using at least the first list of reference pictures. Corresponding video encoding and decoding apparatuses are provided.

4. 发明授权

US09712846B2 Filter positioning and selection 有权
公开(公告)号：US09712846B2
公开(公告)日：2017-07-18
申请号：US13640388
申请日：2011-04-11
申请人： Matthias Narroschke , Hisao Sasai
发明人： Matthias Narroschke , Hisao Sasai
IPC分类号： H04N19/82 , H04N19/86 , H04N19/147 , H04N19/46 , H04N19/61 , H04N19/117 , H04N19/136 , H04N19/48 , H04N19/80
CPC分类号： H04N19/117 , H04N19/136 , H04N19/147 , H04N19/439 , H04N19/44 , H04N19/46 , H04N19/48 , H04N19/61 , H04N19/615 , H04N19/635 , H04N19/68 , H04N19/80 , H04N19/82 , H04N19/86
摘要： The present invention relates to a method for encoding and decoding an image signal and to corresponding apparatuses therefor. In particular, during the encoding and/or decoding of an image signal filtering with at least two filters is performed. The sequence of the filter application and possibly the filters are selected and the filtering is applied in the selected filtering order and with the selected filters. The determination of the sequence of applying the filters may be performed either separately in the same way at the encoder and at the decoder, or, it may be determined at the encoder and signaled to the decoder.

5. 发明授权

US09445129B2 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：US09445129B2
公开(公告)日：2016-09-13
申请号：US13639524
申请日：2011-04-12
申请人： Hisao Sasai , Takahiro Nishi , Youji Shibahara
发明人： Hisao Sasai , Takahiro Nishi , Youji Shibahara
IPC分类号： H04N19/86 , H04N19/176 , H04N19/122 , H04N19/117 , H04N19/18
CPC分类号： H04N19/117 , H04N19/122 , H04N19/176 , H04N19/18 , H04N19/513 , H04N19/86
摘要： An image coding method for coding an input image per block to generate a coded image signal includes: predicting for each prediction unit which is an area obtained by partitioning a target block to generate a prediction image of the target block; comparing a transform unit which is an area obtained by partitioning the target block and is a processing unit for frequency transform with the prediction unit, to detect part of a boundary of the prediction unit, the boundary being located within the transform unit; performing boundary filtering on the detected part of the boundary in the generated prediction image; calculating a difference between a filtered prediction image and the input image to generate a difference image of the target block; and performing frequency transform on the difference image for each transform unit.
摘要翻译：一种用于编码每个块的输入图像以生成编码图像信号的图像编码方法包括：对作为通过划分目标块而获得的区域的每个预测单元预测生成目标块的预测图像; 比较作为通过划分目标块而获得的区域的变换单元，并且是用于与预测单元进行频率变换的处理单元，以检测位于变换单元内的边界的预测单元的边界的一部分; 对生成的预测图像中的检测出的边界部分进行边界滤波; 计算滤波后的预测图像和输入图像之间的差以产生目标块的差分图像; 并对每个变换单元对差分图像进行频率变换。

6. 发明授权

US09363525B2 Image decoding method, image coding method, image decoding apparatus, image coding apparatus, and image coding and decoding apparatus 有权
标题翻译：图像解码方法，图像编码方法，图像解码装置，图像编码装置以及图像编码和解码装置
公开(公告)号：US09363525B2
公开(公告)日：2016-06-07
申请号：US13534363
申请日：2012-06-27
申请人： Hisao Sasai , Takahiro Nishi , Youji Shibahara , Toshiyasu Sugio , Kyoko Tanikawa , Toru Matsunobu
发明人： Hisao Sasai , Takahiro Nishi , Youji Shibahara , Toshiyasu Sugio , Kyoko Tanikawa , Toru Matsunobu
IPC分类号： H04N7/26 , H04M7/00 , H04N19/463 , H04N19/176 , H04N19/70 , H04N19/13 , H04N19/134 , H04N19/593 , H04N19/159 , H04N19/12
CPC分类号： H04N19/134 , H04N19/12 , H04N19/13 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/186 , H04N19/463 , H04N19/593 , H04N19/70
摘要： The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is “no_residual_data_flag”.
摘要翻译：图像解码方法包括：从多个上下文中确定要处理的当前块中使用的上下文; 以及使用所确定的上下文对与当前块相对应的比特序列执行算术解码，其中在所述确定中：在使用当前块的相邻块的控制参数的条件下确定所述上下文，当所述信号类型为第一类型，相邻块是当前块的左块和上块; 并且在信号类型是第二类型且第二类型是“no_residual_data_flag”的情况下，在不使用上部块的控制参数的条件下确定上下文。

7. 发明授权

US09167247B2 Methods and apparatuses for encoding and decoding video using inter-color-plane prediction 有权
标题翻译：使用彩色间预测对视频进行编码和解码的方法和装置
公开(公告)号：US09167247B2
公开(公告)日：2015-10-20
申请号：US13810736
申请日：2012-05-18
申请人： Viktor Wahadaniah , Chong Soon Lim , Sue Mon Thet Naing , Jin Li , Haiwei Sun , Takahiro Nishi , Hisao Sasai , Youji Shibahara , Kyoko Tanikawa , Toshiyasu Sugio , Toru Matsunobu
发明人： Viktor Wahadaniah , Chong Soon Lim , Sue Mon Thet Naing , Jin Li , Haiwei Sun , Takahiro Nishi , Hisao Sasai , Youji Shibahara , Kyoko Tanikawa , Toshiyasu Sugio , Toru Matsunobu
IPC分类号： H04N19/61 , H04N19/103 , H04N19/50 , H04N19/176 , H04N19/46 , H04N19/186
CPC分类号： H04N19/50 , H04N19/103 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/61
摘要： Methods and apparatuses for performing inter-color-plane prediction with adaptability to various existing video content representations are provided. A plurality of predetermined rescaling schemes based on a color plane format is selected. A first block of original samples of a first color plane is encoded into a compressed bitstream. A block of reconstructed samples of the first color plane is reconstructed. An inter-color-plane prediction process is performed to produce samples of a second color plane. Said block of prediction samples of the second color plane is subtracted from a second block of original samples of the second color plane to produce a block of residual samples of the second color plane where the positions of the first block and the second block of original samples are aligned. Finally, the block of residual samples of the second color plane is encoded.
摘要翻译：提供了用于对各种现有视频内容表示适应性进行彩色间预测的方法和装置。选择基于彩色平面格式的多个预定重定标方案。将第一颜色平面的原始样本的第一块编码为压缩比特流。重建第一色平面的重建样本块。执行色间平面预测处理以产生第二色平面的样本。从第二颜色平面的原始样本的第二块中减去所述第二颜色平面的预测样本块，以产生第二颜色平面的残差样本块，其中第一块和第二块原始样本的位置对齐。最后，编码第二色平面的残差样本块。

8. 发明授权

US09100655B2 Motion compensation method, image decoding method, image coding method, motion compensation apparatus, program, and integrated circuit 有权
标题翻译：运动补偿方法，图像解码方法，图像编码方法，运动补偿装置，程序和集成电路
公开(公告)号：US09100655B2
公开(公告)日：2015-08-04
申请号：US13638681
申请日：2011-04-01
申请人： Youji Shibahara , Steffen Wittmann , Takahiro Nishi , Hisao Sasai , Kyoko Tanikawa
发明人： Youji Shibahara , Steffen Wittmann , Takahiro Nishi , Hisao Sasai , Kyoko Tanikawa
IPC分类号： H04N19/51
CPC分类号： H04N19/51
摘要： A motion compensation method includes: specifying, using a motion vector of a current block, a reference image area for use in motion compensation for each of the current block and a current sub-block spatially adjacent to the current block, to read out reference pixel data of the specified area from a frame memory; performing motion compensation using the reference pixel data read out in the readout, to generate prediction pixel data for each of the current block and the current sub-block; outputting the prediction pixel data for the current block, generated in the performing of motion compensation; and temporarily storing the prediction pixel data for the current sub-block, generated in the performing of motion compensation.
摘要翻译：运动补偿方法包括：使用当前块的运动矢量指定用于当前块中的每一个的运动补偿的参考图像区域和与当前块空间相邻的当前子块，以读出参考像素来自帧存储器的指定区域的数据; 使用在读出中读出的参考像素数据执行运动补偿，以生成当前块和当前子块中的每一个的预测像素数据; 输出在执行运动补偿中产生的当前块的预测像素数据; 并且暂时存储在执行运动补偿中产生的当前子块的预测像素数据。

9. 发明授权

US08743969B2 Image decoding method and apparatus based on a signal type of the control parameter of the current block 有权
标题翻译：基于当前块的控制参数的信号类型的图像解码方法和装置
公开(公告)号：US08743969B2
公开(公告)日：2014-06-03
申请号：US13530218
申请日：2012-06-22
申请人： Hisao Sasai , Takahiro Nishi , Youji Shibahara , Toshiyasu Sugio , Kyoko Tanikawa , Toru Matsunobu
发明人： Hisao Sasai , Takahiro Nishi , Youji Shibahara , Toshiyasu Sugio , Kyoko Tanikawa , Toru Matsunobu
IPC分类号： H04N7/12
CPC分类号： H04N19/157 , H04N19/13 , H04N19/176 , H04N19/197 , H04N19/463
摘要： The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type.
摘要翻译：图像解码方法包括：从多个上下文中确定要处理的当前块中使用的上下文; 以及使用所确定的上下文对与当前块相对应的比特序列执行算术解码，其中在所述确定中：在使用当前块的相邻块的控制参数的条件下确定所述上下文，当所述信号类型为第一类型，相邻块是当前块的左块和上块; 并且当信号类型是第二类型时，在不使用上部块的控制参数的条件下确定上下文。

10. 发明申请

US20140105283A1 METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO USING INTRA PREDICTION MODE DEPENDENT ADAPTIVE QUANTIZATION MATRIX 有权
标题翻译：使用内部预测模式依赖自适应量化矩阵编码和解码视频的方法和装置
公开(公告)号：US20140105283A1
公开(公告)日：2014-04-17
申请号：US14125753
申请日：2012-06-12
申请人： Jin Li , Chong Soon Lim , Viktor Wahadaniah , Sue Mon Thet Naing , Hai Wei Sun , Hisao Sasai , Takahiro Nishi , Youji Shibahara , Toshiyasu Sugio , Kyoko Tanikawa , Toru Matsunobu
发明人： Jin Li , Chong Soon Lim , Viktor Wahadaniah , Sue Mon Thet Naing , Hai Wei Sun , Hisao Sasai , Takahiro Nishi , Youji Shibahara , Toshiyasu Sugio , Kyoko Tanikawa , Toru Matsunobu
IPC分类号： H04N19/124 , H04N19/129 , H04N19/159
CPC分类号： H04N19/157 , H04N19/11 , H04N19/124 , H04N19/126 , H04N19/129 , H04N19/159 , H04N19/176 , H04N19/625
摘要： A method of encoding video using intra prediction mode dependent quantization matrix includes: calculating an array of quantizers for each size of block unit (100); encoding the arrays of quantizers into header of compressed video stream (102); selecting one scanning order based on a selected intra prediction mode among a plurality of scanning orders (112); scanning the array of quantizers to obtain a block of quantizers based on the selected scanning order (114).
摘要翻译：使用帧内预测模式相关量化矩阵编码视频的方法包括：针对块单元（100）的每个大小计算量化器阵列; 将量化器阵列编码为压缩视频流（102）的报头; 在多个扫描顺序（112）中基于所选择的帧内预测模式选择一个扫描顺序; 扫描量化器阵列以基于所选择的扫描顺序获得量化器块（114）。

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