公开(公告)号：US07436890B2

公开(公告)日：2008-10-14

申请号：US10392392

申请日：2003-03-20

申请人： Koichi Takagi ,  Sei Naitou ,  Masahiro Wada ,  Shuuichi Matsumoto ,  Gouichi Ishihara

发明人： Koichi Takagi ,  Sei Naitou ,  Masahiro Wada ,  Shuuichi Matsumoto ,  Gouichi Ishihara

IPC分类号： H04N7/18

CPC分类号： H04N19/85 ,  H04N19/124 ,  H04N19/15 ,  H04N19/152 ,  H04N19/17 ,  H04N19/176 ,  H04N19/61

摘要： The present invention provides a quantization control system for video coding, for optimizing bit allocation based on visual priority which expresses at high precision human visual characteristics for videos, thereby improving subjective image quality of the whole image even with a limited number of bits. An object is extracted from a picture of an input image (S1) and a gaze parameter V(j) for the extracted object is calculated (S2). Then, a texture attribute parameter t(k) of each macroblock included in the object is calculated (S3). The gaze parameter V(j) and texture attribute parameter t(k) are used to calculate a visual priority parameter w(k) for each macroblock. Based on this parameter w(k), a quantization parameter is determined.

摘要翻译： 本发明提供了一种用于视频编码的量化控制系统，用于基于视觉优先级优化比特分配，其以高精度的人视觉特征表示视频，从而即使在有限位数的情况下也能提高整个图像的主观图像质量。 从输入图像的图像中提取对象（S 1），并计算提取对象的注视参数V（j）（S 2）。 然后，计算包含在对象中的每个宏块的纹理属性参数t（k）（S 3）。 注视参数V（j）和纹理属性参数t（k）用于计算每个宏块的视觉优先级参数w（k）。 基于该参数w（k），确定量化参数。

公开(公告)号：US08351721B2

公开(公告)日：2013-01-08

申请号：US12961974

申请日：2010-12-07

申请人： Haruhisa Katou ,  Sei Naitou

发明人： Haruhisa Katou ,  Sei Naitou

IPC分类号： G06K9/36 ,  G06K9/46

CPC分类号： H04N19/186 ,  H04N19/105 ,  H04N19/11 ,  H04N19/136 ,  H04N19/147 ,  H04N19/176 ,  H04N19/61

摘要： The image encoding device includes: signal-to-signal predicting unit 8 for separating an intra-signal prediction residual signal obtained by performing difference processing between an input image signal and an intra-signal prediction signal into a reference signal and a signal to be predicted and calculating signal-to-signal prediction information used for performing signal-to-signal prediction on each pixel of the signal to be predicted corresponding to each pixel of the reference signal; and signal-to-signal compensating unit 9 for obtaining a signal-to-signal prediction signal of the region to be encoded from a decoded intra-signal prediction residual signal and the signal-to-signal prediction information from the signal-to-signal predicting unit, wherein each pixel of the signal to be predicted is encoded by performing orthogonal conversion, quantization, and encoding on the signal-to-signal prediction residual signal obtained by performing the difference processing between the intra-signal prediction residual signal and the signal-to-signal prediction signal.

摘要翻译： 图像编码装置包括：信号到信号预测单元8，用于将通过在输入图像信号和帧内信号预测信号之间进行差分处理而获得的信号内预测残差信号分离成参考信号和要预测的信号 以及计算用于对与所述参考信号的每个像素相对应的将被预测的信号的每个像素执行信号到信号预测的信号到信号预测信息; 信号到信号补偿单元9，用于从解码的帧内信号预测残差信号和从信号到信号的信号到信号预测信息中获得要编码的区域的信号到信号预测信号 预测单元，其中通过对通过执行帧内信号预测残差信号和信号之间的差分处理获得的信号到信号预测残差信号执行正交转换，量化和编码来对要预测的信号的每个像素进行编码 信号预测信号。

公开(公告)号：US20110142358A1

公开(公告)日：2011-06-16

申请号：US12961974

申请日：2010-12-07

申请人： Haruhisa Katou ,  Sei Naitou

发明人： Haruhisa Katou ,  Sei Naitou

IPC分类号： G06K9/36

CPC分类号： H04N19/186 ,  H04N19/105 ,  H04N19/11 ,  H04N19/136 ,  H04N19/147 ,  H04N19/176 ,  H04N19/61

摘要： The image encoding device includes: signal-to-signal predicting means 8 for separating an intra-signal prediction residual signal obtained by performing difference processing between an input image signal and an intra-signal prediction signal into a reference signal and a signal to be predicted and calculating signal-to-signal prediction information used for performing signal-to-signal prediction on each pixel of the signal to be predicted corresponding to each pixel of the reference signal; and signal-to-signal compensating means 9 for obtaining a signal-to-signal prediction signal of the region to be encoded from a decoded intra-signal prediction residual signal and the signal-to-signal prediction information from the signal-to-signal predicting means, wherein each pixel of the signal to be predicted is encoded by performing orthogonal conversion, quantization, and encoding on the signal-to-signal prediction residual signal obtained by performing the difference processing between the intra-signal prediction residual signal and the signal-to-signal prediction signal.

摘要翻译： 图像编码装置包括：信号到信号预测装置8，用于将通过在输入图像信号和信号内预测信号之间进行差分处理获得的信号内预测残差信号分离成参考信号和待预测的信号 以及计算用于对与所述参考信号的每个像素相对应的将被预测的信号的每个像素执行信号到信号预测的信号到信号预测信息; 以及信号到信号补偿装置9，用于从解码的帧内信号预测残差信号和从信号到信号的信号到信号预测信息获得要编码的区域的信号到信号预测信号 预测装置，其中通过对通过执行帧内信号预测残差信号和信号之间的差分处理获得的信号到信号预测残差信号执行正交转换，量化和编码来对要预测的信号的每个像素进行编码 信号预测信号。

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。