公开(公告)号：US08976864B2

公开(公告)日：2015-03-10

申请号：US13402319

申请日：2012-02-22

申请人： Tomonobu Yoshino ,  Sei Naitou

发明人： Tomonobu Yoshino ,  Sei Naitou

IPC分类号： H04N11/02 ,  H04N19/557 ,  H04N19/80 ,  H04N19/523

CPC分类号： H04N19/557 ,  H04N19/523 ,  H04N19/80

摘要： A video encoding apparatus, video encoding method, and computer program, which are capable of employing an adaptive filter that provides improved encoding performance while reducing the processing cost required for calculation. A video encoding apparatus estimates interpolation filter coefficients by means of an image frequency characteristic analysis. When a loop continuation condition is satisfied, the video encoding apparatus performs re-estimation of the interpolation filter coefficients. As the loop continuation condition, a first condition can be used, in which the number of times the re-estimation has been consecutively performed for the current frame to be processed is smaller than a predetermined number, for example.

摘要翻译： 一种视频编码装置，视频编码方法和计算机程序，其能够采用提供改善的编码性能的自适应滤波器，同时降低计算所需的处理成本。 视频编码装置通过图像频率特性分析来估计内插滤波器系数。 当满足循环持续条件时，视频编码装置对内插滤波器系数进行再估计。 作为循环继续条件，例如可以使用第一条件，其中针对当前要处理的帧连续执行重新估计的次数小于预定数量。

公开(公告)号：US08731057B2

公开(公告)日：2014-05-20

申请号：US13209875

申请日：2011-08-15

申请人： Tomonobu Yoshino ,  Sei Naitou ,  Shigeyuki Sakazawa

发明人： Tomonobu Yoshino ,  Sei Naitou ,  Shigeyuki Sakazawa

IPC分类号： H04N1/417

CPC分类号： H04N19/523 ,  H04N19/117 ,  H04N19/174 ,  H04N19/70

摘要： It is a purpose of the present invention to provide a video encoding apparatus, a video decoding apparatus, a video encoding method, a video decoding method, and a computer program, which allow adaptive filter coefficients to be used with a reduced amount of coding. A video encoding apparatus AA selects a suitable coefficient from among multiple kinds of interpolation filter coefficients determined beforehand by means of a component external to the video encoding apparatus AA. Subsequently, the video encoding apparatus AA records identification information uniquely defined for the selected interpolation filter coefficient in control information for each slice. Furthermore, the video encoding apparatus AA uses the interpolation filter coefficient thus selected to generate encoded data c including the identification information uniquely defined for the interpolation filter coefficient thus selected.

摘要翻译： 本发明的目的是提供一种视频编码装置，视频解码装置，视频编码方法，视频解码方法和计算机程序，其允许以减少的编码量使用自适应滤波器系数。 视频编码装置AA从通过视频编码装置AA外部的分量预先确定的多种内插滤波器系数中选择合适的系数。 随后，视频编码装置AA将针对所选择的内插滤波器系数唯一地定义的识别信息记录在每个切片的控制信息中。 此外，视频编码装置AA使用这样选择的内插滤波器系数来生成包含为所选择的内插滤波器系数唯一定义的识别信息的编码数据c。

公开(公告)号：US08199818B2

公开(公告)日：2012-06-12

申请号：US12054756

申请日：2008-03-25

申请人： Tomonobu Yoshino ,  Sei Naito ,  Atsushi Koike

发明人： Tomonobu Yoshino ,  Sei Naito ,  Atsushi Koike

IPC分类号： H04B1/66

CPC分类号： H04N19/136 ,  H04N19/11 ,  H04N19/176 ,  H04N19/61

摘要： There is provided an intra prediction system having high prediction performance and satisfactory encoding efficiency in a pattern image in which pixel value is periodically changed and a pattern image in which pixel value has a constant change tendency like gradation effect. A frequency component extraction unit allows a pixel value of an encoded MB to be made one-dimensional for one-dimensional orthogonal conversion. A frequency component-considering prediction value calculation unit receives, as inputs, a pixel value of an encoded adjacent MB and an alternating current frequency component output to create an orthogonal conversion coefficient. The orthogonal conversion coefficient then is subjected inverted orthogonal conversion (IDCT) to generate a prediction value p(i). A prediction direction determination unit selects and outputs a prediction value p′(i) in a prediction direction having the highest encoding efficiency among a conventional prediction value calculation unit and a prediction value calculation unit according to the present invention.

摘要翻译： 提供一种在像素值周期性变化的图案图像中具有高预测性能和令人满意的编码效率的帧内预测系统以及其中像素值具有恒定变化趋势的图案图像，如灰度效果。 频率分量提取单元允许将编码的MB的像素值制成一维用于一维正交变换。 频率分量考虑预测值计算单元接收编码的相邻MB的像素值和输出的交流频率分量作为输入，以产生正交变换系数。 然后对正交变换系数进行反向正交变换（IDCT），生成预测值p（i）。 预测方向确定单元根据本发明在常规预测值计算单元和预测值计算单元中选择并输出具有最高编码效率的预测方向的预测值p'（i）。

公开(公告)号：US20100246684A1

公开(公告)日：2010-09-30

申请号：US12727278

申请日：2010-03-19

申请人： Sei Naito ,  Tomonobu Yoshino

发明人： Sei Naito ,  Tomonobu Yoshino

IPC分类号： H04N7/50

CPC分类号： H04N19/567 ,  H04N19/103 ,  H04N19/119 ,  H04N19/14 ,  H04N19/147 ,  H04N19/176 ,  H04N19/53

摘要： A video encoder according to the present invention improves coding efficiency of a super high definition video by setting an area of MB size and optimally determining size of the area. A locally decoded image (a) is subjected to frequency analysis in a frequency analyzing unit. Based on the result, an area setting unit sets a local area in a picture to which the maximum MB size is applied. An area boundary correcting unit corrects an area boundary in accordance with a representative motion characteristic, and an N-value calculating unit determines the maximum MB size (N×N) of each area based on a result of encoding a neighboring picture. The area setting and the N-value calculation are performed step by step.

摘要翻译： 根据本发明的视频编码器通过设置MB大小的面积并且最佳地确定区域的大小来提高超高分辨率视频的编码效率。 在频率分析单元中对本地解码图像（a）进行频率分析。 基于该结果，区域设置单元设置应用了最大MB大小的图片中的局部区域。 区域边界校正单元根据代表运动特性校正区域边界，并且N值计算单元基于对相邻图像进行编码的结果来确定每个区域的最大MB大小（N×N）。 进行区域设定和N值运算。

公开(公告)号：US08780995B2

公开(公告)日：2014-07-15

申请号：US12963138

申请日：2010-12-08

申请人： Tomonobu Yoshino ,  Sei Naito ,  Shigeyuki Sakazawa

发明人： Tomonobu Yoshino ,  Sei Naito ,  Shigeyuki Sakazawa

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04B1/66 ,  G06K9/36 ,  G06K9/46

CPC分类号： H04N19/117 ,  H04N19/139 ,  H04N19/176 ,  H04N19/523 ,  H04N19/61

摘要： It is a purpose of the present invention to provide a video encoding apparatus and a video decoding apparatus which are capable of providing real-time processing having improved coding performance. A video encoding apparatus AA includes an inter-encoding predicted value generating unit 2 configured to receive, as input signals, an input image a, a local decoded value d acquired from an encoded block, prediction direction information e acquired from the encoded block, and interpolation filter initial control information b. The inter-encoding predicted value generating unit 2 includes a filter control unit 21. The filter control unit 21 extracts the tap size N of the interpolation filter and the initial value c0(i,j) of the filter coefficient of the interpolation filter from the interpolation filter initial control information b, and uses the initial value c0(i,j) of the filter coefficient of the interpolation filter as the filter coefficient c(i,j) of the interpolation filter.

摘要翻译： 本发明的目的是提供能够提供具有改进的编码性能的实时处理的视频编码装置和视频解码装置。 视频编码装置AA包括帧间编码预测值生成单元2，其被配置为接收输入图像a，从编码块获取的局部解码值d，从编码块获取的预测方向信息e，以及 内插滤波器初始控制信息b。 帧间编码预测值生成单元2包括滤波器控制单元21.滤波器控制单元21从插值滤波器的抽头尺寸N提取内插滤波器的滤波器系数的初始值c0（i，j） 内插滤波器初始控制信息b，并且使用内插滤波器的滤波器系数的初始值c0（i，j）作为内插滤波器的滤波器系数c（i，j）。

公开(公告)号：US20100322316A1

公开(公告)日：2010-12-23

申请号：US12814634

申请日：2010-06-14

申请人： Tomonobu Yoshino ,  Sei Naito ,  Shigeyuki Sakazawa

发明人： Tomonobu Yoshino ,  Sei Naito ,  Shigeyuki Sakazawa

IPC分类号： H04N7/32

CPC分类号： H04N19/18 ,  H04N19/103 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/513 ,  H04N19/61

摘要： As the encoding mode, a moving-picture encoding apparatus includes an encoding mode that relies only on inference based on encoding information of a previously encoded unit block so as to encode a picture of a unit block. The encoding information in this encoding mode is imparted with secondary encoding information for improving the prediction performance, e.g., MV information. The MV information is produced by an MV-information producing unit 21 to which an input picture and MV information in a previously encoded MB are input. A locally-decoded picture producing unit 22 produces a locally-decoded picture (pixel value) of the previously encoded MB. As the secondary encoding information, a DC component of an orthogonal transformation result relative to a prediction error or a value equivalent to an average value of prediction errors can also be used.

摘要翻译： 作为编码模式，运动图像编码装置包括仅基于推断的编码模式，该编码模式基于先前编码的单位块的编码信息，以对单位块的图像进行编码。 该编码模式中的编码信息被赋予用于改善预测性能的辅助编码信息，例如MV信息。 MV信息由输入图像和先前编码的MB中的MV信息的MV信息产生单元21产生。 本地解码图像产生单元22产生先前编码的MB的本地解码的图像（像素值）。 作为二次编码信息，也可以使用相对于预测误差的正交变换结果的DC分量或与预测误差的平均值相当的值。

公开(公告)号：US20080240238A1

公开(公告)日：2008-10-02

申请号：US12054756

申请日：2008-03-25

申请人： Tomonobu Yoshino ,  Sei Naito ,  Atsushi Koike

发明人： Tomonobu Yoshino ,  Sei Naito ,  Atsushi Koike

IPC分类号： H04N7/12

CPC分类号： H04N19/136 ,  H04N19/11 ,  H04N19/176 ,  H04N19/61

摘要： There is provided an intra prediction system having high prediction performance and satisfactory encoding efficiency in a pattern image in which pixel value is periodically changed and a pattern image in which pixel value has a constant change tendency like gradation effect. A frequency component extraction unit allows a pixel value of an encoded MB to be made one-dimensional for one-dimensional orthogonal conversion. A frequency component-considering prediction value calculation unit receives, as inputs, a pixel value of an encoded adjacent MB and an alternating current frequency component output to create an orthogonal conversion coefficient. The orthogonal conversion coefficient then is subjected inverted orthogonal conversion (IDCT) to generate a prediction value p(i). A prediction direction determination unit selects and outputs a prediction value p′ (i) in a prediction direction having the highest encoding efficiency among a conventional prediction value calculation unit and a prediction value calculation unit according to the present invention.

摘要翻译： 提供一种在像素值周期性变化的图案图像中具有高预测性能和令人满意的编码效率的帧内预测系统以及其中像素值具有恒定变化趋势的图案图像，如灰度效果。 频率分量提取单元允许将编码的MB的像素值制成一维用于一维正交变换。 频率分量考虑预测值计算单元接收编码的相邻MB的像素值和输出的交流频率分量作为输入，以产生正交变换系数。 然后对正交变换系数进行反向正交变换（IDCT），生成预测值p（i）。 预测方向确定单元根据本发明在常规预测值计算单元和预测值计算单元中选择并输出具有最高编码效率的预测方向的预测值p'（i）。

公开(公告)号：US09014268B2

公开(公告)日：2015-04-21

申请号：US12727278

申请日：2010-03-19

申请人： Sei Naito ,  Tomonobu Yoshino

发明人： Sei Naito ,  Tomonobu Yoshino

IPC分类号： H04N7/50 ,  H04N19/567 ,  H04N19/176 ,  H04N19/119 ,  H04N19/147 ,  H04N19/103 ,  H04N19/14 ,  H04N19/53

CPC分类号： H04N19/567 ,  H04N19/103 ,  H04N19/119 ,  H04N19/14 ,  H04N19/147 ,  H04N19/176 ,  H04N19/53

摘要： A video encoder according to the present invention improves coding efficiency of a super high definition video by setting an area of MB size and optimally determining size of the area. A locally decoded image (a) is subjected to frequency analysis in a frequency analyzing unit. Based on the result, an area setting unit sets a local area in a picture to which the maximum MB size is applied. An area boundary correcting unit corrects an area boundary in accordance with a representative motion characteristic, and an N-value calculating unit determines the maximum MB size (N×N) of each area based on a result of encoding a neighboring picture. The area setting and the N-value calculation are performed step by step.

摘要翻译： 根据本发明的视频编码器通过设置MB大小的面积并且最佳地确定区域的大小来提高超高分辨率视频的编码效率。 在频率分析单元中对本地解码图像（a）进行频率分析。 基于该结果，区域设置单元设置应用了最大MB大小的图片中的局部区域。 区域边界校正单元根据代表运动特性校正区域边界，并且N值计算单元基于对相邻图像进行编码的结果来确定每个区域的最大MB大小（N×N）。 进行区域设定和N值运算。