公开(公告)号：US09930331B2

公开(公告)日：2018-03-27

申请号：US13809272

申请日：2011-07-14

申请人： Tomoyuki Yamamoto ,  Tomohiro Ikai

发明人： Tomoyuki Yamamoto ,  Tomohiro Ikai

IPC分类号： H04N7/26 ,  H04N19/50 ,  H04N19/196 ,  H04N19/593 ,  H04N19/463 ,  H04N19/44 ,  H04N19/70 ,  H04N19/11

CPC分类号： H04N19/196 ,  H04N19/11 ,  H04N19/197 ,  H04N19/44 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70

摘要： A moving image decoder (1) includes an intermediate estimated prediction mode deriving section (124) for transforming a prediction mode of each neighbor partition into an intermediate prediction mode included in an intermediate prediction set which is a sum of prediction sets (PS); and an estimated prediction mode deriving section (125) for deriving an estimated prediction mode by estimating a prediction mode of a target partition based on the intermediate prediction mode of each neighbor partition which is obtained by the transform.

公开(公告)号：US20130136371A1

公开(公告)日：2013-05-30

申请号：US13704169

申请日：2011-06-02

申请人： Tomohiro Ikai ,  Tomoyuki Yamamoto ,  Takanori Yamazaki

发明人： Tomohiro Ikai ,  Tomoyuki Yamamoto ,  Takanori Yamazaki

IPC分类号： G06T5/00 ,  G06T9/00

CPC分类号： G06T5/001 ,  G06T9/004 ,  H04N19/117 ,  H04N19/14 ,  H04N19/17 ,  H04N19/176 ,  H04N19/593 ,  H04N19/70 ,  H04N19/82

摘要： An adaptive filter includes: an edge direction detection section which discriminates directionality of an input image in each of a plurality of unit regions constituting the input image; a region classification section which classifies the each of the plurality of unit regions into one of a plurality of unit region groups in accordance with to which of a plurality of predetermined groups the directionality of the input image in the each of the plurality of unit regions belongs, the directionality having been discriminated by the edge direction detection section; and a filter process section which calculates a pixel value of the each pixel of an output image by use of a filter coefficient group optimized for a unit region group to which a unit region including the each pixel belongs.

摘要翻译： 自适应滤波器包括：边缘方向检测部，其识别构成输入图像的多个单位区域中的每一个中的输入图像的方向性; 区域分类部，根据多个单位区域中的每一个所属的输入图像的方向性，将多个单位区域中的每一个分类为多个单位区域组中的一个， 所述方向性被所述边缘方向检测部所区分; 以及滤波处理部，其通过使用针对包括每个像素的单位区域属于的单位区域群优化的滤波器系数组来计算输出图像的每个像素的像素值。

公开(公告)号：US20120213288A1

公开(公告)日：2012-08-23

申请号：US13502684

申请日：2010-09-17

申请人： Yoshihiro Kitaura ,  Tomohiro Ikai

发明人： Yoshihiro Kitaura ,  Tomohiro Ikai

IPC分类号： H04N7/32

CPC分类号： H04N19/553 ,  H04N19/56 ,  H04N19/61

摘要： As a prediction vector is set a prediction vector selected from one of a first prediction vector candidate and a prediction vector candidate in accordance with an encoding cost. The prediction vector candidate is a prediction vector candidate selected from one of a second prediction vector candidate and a third prediction vector candidate in accordance with a predictive accuracy of the third prediction vector candidate. The first prediction vector candidate is a median of motion vectors assigned to respective partitions surrounding a target partition. The second prediction vector candidate is a motion vector assigned to a partition adjacent to a left side of the target partition. The third prediction vector candidate is a motion vector assigned to a collocate partition identical in location to the target partition of a decoded frame.

摘要翻译： 作为预测矢量，根据编码成本设定从第一预测向量候补和预测向量候选中选择的预测矢量。 预测向量候选是根据第三预测向量候选的预测精度从第二预测向量候补和第三预测向量候选中选择的预测向量候补。 第一预测向量候选是分配给目标分区周围的相应分区的运动矢量的中值。 第二预测向量候选是分配给与目标分区的左侧相邻的分区的运动矢量。 第三预测向量候选是分配给与解码帧的目标分区相同位置的并置分区的运动矢量。

公开(公告)号：US20110255797A1

公开(公告)日：2011-10-20

申请号：US13142027

申请日：2009-12-24

申请人： Tomohiro Ikai

发明人： Tomohiro Ikai

IPC分类号： G06K9/38

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61

摘要： When a filtering process on decoded image data is performed using filter parameters, gradient values near the pixel to be the target of the filtering process are calculated. In accordance with the calculated gradient, a single filter parameter is selected from a set of filter parameters. Based on the selected filter parameter, weight coefficients for the filtering process are calculated. Then, using the pixel value to be the processing target, the surrounding pixel values and the calculated weight coefficients, the pixel value after correction of the processing target pixel is calculated. With this process, it is possible to provide an image coding apparatus that can efficiently code an image properly and an image decoding apparatus that can decode an image, by performing a filtering process in accordance with the image characteristics.

摘要翻译： 当使用滤波器参数对解码图像数据进行滤波处理时，计算作为滤波处理对象的像素附近的梯度值。 根据计算的梯度，从一组滤波器参数中选择单个滤波器参数。 基于所选择的滤波参数，计算滤波处理的权重系数。 然后，使用像素值作为处理对象，计算周围像素值和计算出的权重系数，处理对象像素的校正后的像素值。 通过该处理，可以通过根据图像特性进行滤波处理，提供可以对图像进行有效地编码的图像编码装置和能够对图像进行解码的图像解码装置。

公开(公告)号：US08792738B2

公开(公告)日：2014-07-29

申请号：US13142027

申请日：2009-12-24

申请人： Tomohiro Ikai

发明人： Tomohiro Ikai

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

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61

摘要： When a filtering process on decoded image data is performed using filter parameters, gradient values near the pixel to be the target of the filtering process are calculated. In accordance with the calculated gradient, a single filter parameter is selected from a set of filter parameters. Based on the selected filter parameter, weight coefficients for the filtering process are calculated. Then, using the pixel value to be the processing target, the surrounding pixel values and the calculated weight coefficients, the pixel value after correction of the processing target pixel is calculated. With this process, it is possible to provide an image coding apparatus that can efficiently code an image properly and an image decoding apparatus that can decode an image, by performing a filtering process in accordance with the image characteristics.

摘要翻译： 当使用滤波器参数对解码图像数据进行滤波处理时，计算作为滤波处理对象的像素附近的梯度值。 根据计算的梯度，从一组滤波器参数中选择单个滤波器参数。 基于所选择的滤波参数，计算滤波处理的权重系数。 然后，使用像素值作为处理对象，计算周围像素值和计算出的权重系数，处理对象像素的校正后的像素值。 通过该处理，可以通过根据图像特性进行滤波处理，提供可以对图像进行有效地编码的图像编码装置和能够对图像进行解码的图像解码装置。

公开(公告)号：US20140140416A1

公开(公告)日：2014-05-22

申请号：US14127889

申请日：2012-06-22

申请人： Takanori Yamazaki ,  Tomohiro Ikai ,  Tomoyuki Yamamoto ,  Yukinobu Yasugi

发明人： Takanori Yamazaki ,  Tomohiro Ikai ,  Tomoyuki Yamamoto ,  Yukinobu Yasugi

IPC分类号： H04N19/117 ,  H04N19/44

CPC分类号： H04N19/117 ,  H04N19/14 ,  H04N19/182 ,  H04N19/184 ,  H04N19/44 ,  H04N19/463 ,  H04N19/70 ,  H04N19/82 ,  H04N19/96

摘要： An adaptive offset filter (60) adds an offset to the pixel value of each pixel forming an input image. The adaptive offset filter (60) refers to offset-type specifying information, sets offset attributes for a subject unit area of the input image, decodes an offset having a bit width corresponding to an offset value range included in the set offset attributes, and adds the offset to the pixel value of each pixel forming the input image.

摘要翻译： 自适应偏移滤波器（60）对形成输入图像的每个像素的像素值添加偏移。 自适应偏移滤波器（60）是指偏移型指定信息，设置输入图像的主体单位区域的偏移属性，对具有与设定的偏移属性中包含的偏移值范围相对应的位宽的位移进行解码， 与形成输入图像的每个像素的像素值的偏移。

公开(公告)号：US20130077884A1

公开(公告)日：2013-03-28

申请号：US13701441

申请日：2011-05-31

申请人： Tomohiro Ikai ,  Yoshihiro Kitaura ,  Tomoko Aono

发明人： Tomohiro Ikai ,  Yoshihiro Kitaura ,  Tomoko Aono

IPC分类号： G06T9/00

CPC分类号： G06T9/00 ,  G06T9/004 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/436 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86

摘要： A loop filter section according to an embodiment of the present invention includes: a BF section selectively acting on a block boundary of an image processed block by block; and an adaptive filter section including a first linear filter section that acts on an input image to be supplied to the BF section and a second linear filter section that acts on an output image of the BF section. The adaptive filter section performs addition of an output image of the first linear filter section and an output image of the second linear filter section to output a result of the addition.

摘要翻译： 根据本发明的实施例的环路滤波器部分包括：BF部分选择性地作用在图像处理块的块边界上; 以及自适应滤波器部分，其包括作用于要提供给BF部分的输入图像的第一线性滤波器部分和作用在BF部分的输出图像上的第二线性滤波器部分。 自适应滤波器部分执行第一线性滤波器部分的输出图像和第二线性滤波器部分的输出图像的相加以输出相加的结果。

公开(公告)号：US20130058410A1

公开(公告)日：2013-03-07

申请号：US13697247

申请日：2011-04-28

申请人： Yukinobu Yasugi ,  Tomohiro Ikai ,  Tomoyuki Yamamoto

发明人： Yukinobu Yasugi ,  Tomohiro Ikai ,  Tomoyuki Yamamoto

IPC分类号： H04N7/30 ,  H04N7/50

CPC分类号： H04N19/44 ,  H04N19/124 ,  H04N19/167 ,  H04N19/176 ,  H04N19/198 ,  H04N19/463 ,  H04N19/65 ,  H04N19/70 ,  H04N19/90 ,  H04N19/91

摘要： A video encoding device includes a side information determination section and a side information encoding section. The side information determination section sets a quantization parameter for each macroblock in such a manner that a difference between quantization parameters for each pair of macroblocks with successive encoding orders is equal to one of n difference values, and transforms the difference into one of n indices with respect to each pair. The side information encoding section generates a binary sequence having a length corresponding to the size of the absolute value of the index. The total of absolute values of the n indices is smaller than the total of absolute values of the n difference values.

摘要翻译： 视频编码装置包括侧信息确定部分和侧信息编码部分。 侧面信息确定部分以每个宏块的量化参数为单位设置每个宏块的量化参数，其中每个具有连续编码顺序的宏块的量化参数之间的差等于n个差值中的一个，并将该差变换成n个索引中的一个， 尊重每一对。 侧信息编码部分生成具有与索引的绝对值的大小相对应的长度的二进制序列。 n个索引的绝对值的总和小于n个差值的绝对值的总和。

公开(公告)号：US20120300849A1

公开(公告)日：2012-11-29

申请号：US13521392

申请日：2010-12-24

申请人： Yukinobu Yasugi ,  Tomohiro Ikai

发明人： Yukinobu Yasugi ,  Tomohiro Ikai

IPC分类号： H04N7/32

CPC分类号： H04N19/577 ,  H04N19/117 ,  H04N19/154 ,  H04N19/174 ,  H04N19/194 ,  H04N19/463 ,  H04N19/61 ,  H04N19/82

摘要： An encoding device of the present embodiment includes: an adaptive filter (100) configured to act on a reference image obtained by encoding and reconfiguring an input image; and a prediction image generating section (16a) for generating a first prediction image, the prediction image generating section (16a) generating a second filter configured to act on the reference image and a second prediction image by carrying out motion compensation with reference to an output image obtained through the second filter, and the adaptive filter (100) dividing the first prediction image into a plurality of regions and setting a filter coefficient of the second filter so that a difference between the input image and the first prediction image is minimized for each of the plurality of regions.

摘要翻译： 本实施例的编码装置包括：自适应滤波器（100），被配置为对通过编码和重新配置输入图像获得的参考图像作用; 以及预测图像生成部（16a），用于生成第一预测图像，所述预测图像生成部（16a）通过参照输出执行运动补偿来生成配置为对所述参考图像进行动作的第二滤波器和第二预测图像 通过第二滤波器获得的图像，以及自适应滤波器（100）将第一预测图像划分为多个区域并设置第二滤波器的滤波器系数，使得输入图像和第一预测图像之间的差最小化， 的多个区域。

公开(公告)号：US20120281749A1

公开(公告)日：2012-11-08

申请号：US13520747

申请日：2010-12-15

申请人： Tomohiro Ikai

发明人： Tomohiro Ikai

IPC分类号： H04N7/26

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/523 ,  H04N19/61 ,  H04N19/82

摘要： A moving image encoder (1) includes an encoding section (12) for encoding a symbol for the absolute value of each filter coefficient in a two-dimensional filter serving as an adaptive interpolation filter or an adaptive loop filter, the encoding section (12) encoding, in correspondence with the value of a symbol for which the encoding section immediately previously carried out the above encoding, the symbol for each filter coefficient sequentially from a filter coefficient close to or far from a central position in a two-dimensional placement of the filter coefficient set.

摘要翻译： 运动图像编码器（1）包括编码部分（12），用于对用作自适应内插滤波器或自适应环路滤波器的二维滤波器中的每个滤波器系数的绝对值的符号进行编码，编码部分（12） 对应于先前执行上述编码的编码部分的符号的值对应于从二维放置中的中心位置接近或远离中心位置的滤波器系数的每个滤波器系数的符号 滤波系数组。