公开(公告)号：US20190230366A1

公开(公告)日：2019-07-25

申请号：US16371161

申请日：2019-04-01

申请人： Hirofumi Aoki ,  Keiichi Chono ,  Yuzo Senda ,  Kenta Senzaki

发明人： Hirofumi Aoki ,  Keiichi Chono ,  Yuzo Senda ,  Kenta Senzaki

IPC分类号： H04N19/159 ,  H04N19/157 ,  H04N19/196 ,  H04N19/593 ,  H04N19/124

摘要： In a video decoding device, a quantization step size decoding unit calculates a quantization step size that controls a granularity of the inverse quantization by, based on an image prediction, selectively using a mean value of at least a quantization step size assigned to a leftwardly adjacent neighboring image block already decoded and a quantization step size assigned to a upwardly adjacent neighboring image block already decoded or a quantization step size assigned to an image block decoded immediately before.

公开(公告)号：US09288485B2

公开(公告)日：2016-03-15

申请号：US13810586

申请日：2011-09-12

申请人： Keiichi Chono ,  Yuzo Senda ,  Junji Tajime ,  Hirofumi Aoki ,  Kenta Senzaki

发明人： Keiichi Chono ,  Yuzo Senda ,  Junji Tajime ,  Hirofumi Aoki ,  Kenta Senzaki

IPC分类号： H04N19/82 ,  H04N19/176 ,  H04N19/117 ,  H04N19/103 ,  H04N19/159 ,  H04N19/182 ,  H04N19/80 ,  H04N19/86

CPC分类号： H04N19/103 ,  H04N19/117 ,  H04N19/159 ,  H04N19/182 ,  H04N19/80 ,  H04N19/86

摘要： When injecting pseudo random noise to an area centered on a block boundary, a video encoding device and a video decoding device prevent injection of pseudo random noise to an area including a reference image for subsequent planar mode filtering, in order to suppress linear artifacts. The video encoding device includes: an inverse quantization unit for inverse-quantizing a quantization index to obtain a quantization representative value; an inverse frequency transform unit for inverse-transforming the quantization representative value obtained by the inverse quantization unit, to obtain a reconstructed image block; and an adaptive distortion removal filter unit for injecting pseudo random noise to an area centered on a boundary of the reconstructed image block, wherein the adaptive distortion removal filter unit does not inject pseudo random noise to an area including a reference image for planar mode filtering.

摘要翻译： 当将伪随机噪声注入到以块边界为中心的区域时，视频编码装置和视频解码装置防止将伪随机噪声注入到包括用于随后的平面模式滤波的参考图像的区域上，以便抑制线性伪影。 视频编码装置包括：逆量化单元，用于对量化索引进行逆量化以获得量化代表值; 逆频率变换单元，用于逆变换由所述逆量化单元获得的量化代表值，以获得重构图像块; 以及用于将伪随机噪声注入到以所述重构图像块的边界为中心的区域的自适应失真去除滤波器单元，其中所述自适应失真去除滤波器单元不向包括用于平面模式滤波的参考图像的区域注入伪随机噪声。

公开(公告)号：US09258560B2

公开(公告)日：2016-02-09

申请号：US13808829

申请日：2011-06-21

申请人： Junji Tajime ,  Hirofumi Aoki ,  Keiichi Chono ,  Yuzo Senda ,  Kenta Senzaki

发明人： Junji Tajime ,  Hirofumi Aoki ,  Keiichi Chono ,  Yuzo Senda ,  Kenta Senzaki

IPC分类号： H04N11/02 ,  H04N19/50 ,  H04N19/46 ,  H04N19/593 ,  H04N19/426

CPC分类号： H04N19/50 ,  H04N19/426 ,  H04N19/46 ,  H04N19/593

摘要： In the present invention, reconstructed images for prediction are stored in uncompressed reference picture memory and compressed reference picture memory. A video decoder stores in uncompressed reference picture memory a reconstructed image of a frame to be decoded which has been generated on the basis of a prediction, and among reconstructed images which have been stored in the uncompressed reference picture memory, compresses a reconstructed image that will not be used for prediction of the frame to be decoded and stores the image in the compressed reference picture memory. Using the reconstructed images which are stored in the uncompressed reference picture memory and the compressed reference picture memory, the video bitstream is decoded into a video.

摘要翻译： 在本发明中，用于预测的重建图像被存储在未压缩参考图像存储器和压缩参考图像存储器中。 视频解码器在未压缩的参考图像存储器中存储已经基于预测生成的要解码的帧的重构图像，以及已经存储在未压缩参考图像存储器中的重建图像之中，压缩重建图像， 不用于预测要解码的帧，并将图像存储在压缩参考图像存储器中。 使用存储在未压缩参考图像存储器和压缩参考图像存储器中的重建图像，将视频比特流解码成视频。

公开(公告)号：US10432934B2

公开(公告)日：2019-10-01

申请号：US14009659

申请日：2012-06-08

申请人： Hirofumi Aoki ,  Keiichi Chono ,  Yuzo Senda

发明人： Hirofumi Aoki ,  Keiichi Chono ,  Yuzo Senda

IPC分类号： H04N19/124 ,  H04N19/50 ,  H04N19/59

摘要： A video encoding device includes: a quantization step size encoding unit 11 for encoding a quantization step size for controlling quantization granularity; and a quantization step size downsampling unit 12 for downsampling one or more encoded quantization step sizes to generate a quantization step size representative value. The quantization step size encoding unit 11 predicts the quantization step size using the quantization step size representative value.

公开(公告)号：US10154267B2

公开(公告)日：2018-12-11

申请号：US13881467

申请日：2011-11-22

申请人： Keiichi Chono ,  Yuzo Senda ,  Junji Tajime ,  Hirofumi Aoki ,  Kenta Senzaki

发明人： Keiichi Chono ,  Yuzo Senda ,  Junji Tajime ,  Hirofumi Aoki ,  Kenta Senzaki

IPC分类号： H04N7/26 ,  H04N19/156 ,  H04N19/503 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61 ,  H04N19/593 ,  H04N19/12 ,  H04N19/172 ,  H04N19/184

摘要： A video encoding device includes: transform means 11 for transforming an image block; entropy encoding means 12 for entropy-encoding transformed data of the image block transformed by the transform means 11; PCM encoding means 13 for PCM-encoding the image block; multiplex data selection means 14 for selecting output data of the entropy encoding means 12 or the PCM encoding means 13, in a block of a block size set from the outside; and multiplexing means 15 for embedding a PCM header in a bitstream, in the block of the set from the outside block size.

公开(公告)号：US10021385B2

公开(公告)日：2018-07-10

申请号：US13976308

申请日：2011-12-22

申请人： Keiichi Chono ,  Yuzo Senda ,  Hirofumi Aoki ,  Kenta Senzaki

发明人： Keiichi Chono ,  Yuzo Senda ,  Hirofumi Aoki ,  Kenta Senzaki

IPC分类号： H04N7/32 ,  H04N19/50 ,  H04N19/176 ,  H04N19/593 ,  H04N19/117 ,  H04N19/154 ,  H04N19/82 ,  H04N19/61

CPC分类号： H04N19/117 ,  H04N19/154 ,  H04N19/176 ,  H04N19/593 ,  H04N19/61 ,  H04N19/82

摘要： A video encoding device includes a planar prediction unit using planar prediction, and a noise injecting unit for injecting pseudo-random noise into a prediction image of a planar prediction block when a reconstructed prediction error value for planar prediction is less than a threshold determined by the size of the planar prediction block. The video encoding device then uses the pseudo-random noise in linear interpolation for calculating the prediction image, based on the conditions under which a gradient distortion occurs, to suppress the gradient distortion.

公开(公告)号：US20140105282A1

公开(公告)日：2014-04-17

申请号：US14114941

申请日：2012-06-27

申请人： Keiichi Chono ,  Hirofumi Aoki ,  Yuzo Senda

发明人： Keiichi Chono ,  Hirofumi Aoki ,  Yuzo Senda

IPC分类号： H04N19/124 ,  H04N19/184 ,  H04N19/196 ,  H04N19/136

CPC分类号： H04N19/91 ,  H04N19/463 ,  H04N19/50

摘要： A video quantization parameter encoder includes: a prediction unit 11 for generating a predicted quantization parameter from a past reconstructed quantization parameter; a computing unit 12 for generating a delta quantization parameter from a quantization parameter and the predicted quantization parameter; and quantization parameter encoding means 13 for binary arithmetic encoding a first bin indicating whether or not the delta quantization parameter is significant, a second bin indicating whether the delta quantization parameter is positive or negative, and other bins indicating an absolute value of the delta quantization parameter, in the case where the delta quantization parameter is significant.

摘要翻译： 视频量化参数编码器包括：预测单元11，用于从过去的重建量化参数产生预测量化参数; 计算单元12，用于从量化参数和预测量化参数产生增量量化参数; 以及量化参数编码装置13，用于二进制算术编码表示增量量化参数是否有效的第一个bin，指示增量量化参数是正还是负的第二bin，以及指示增量量化参数的绝对值的其他bin 在delta量化参数有效的情况下。

公开(公告)号：US20130322542A1

公开(公告)日：2013-12-05

申请号：US13977756

申请日：2012-01-05

申请人： Kenta Senzaki ,  Yuzo Senda ,  Keiichi Chono ,  Hirofumi Aoki

发明人： Kenta Senzaki ,  Yuzo Senda ,  Keiichi Chono ,  Hirofumi Aoki

IPC分类号： H04N7/36

CPC分类号： H04N19/139 ,  H04N19/109 ,  H04N19/119 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/61 ,  H04N19/65 ,  H04N19/70 ,  H04N19/91

摘要： A video encoding device includes encoding control means 11 for controlling an inter-PU partition type of a CU to be encoded, based on the maximum number (PA) of motion vectors allowed for an image block having a predetermined area and the number (PB) of motion vectors of an encoded image block contained in the image block having the predetermined area. A video decoding device includes decoding control means for controlling an inter-PU partition type of a CU to be decoded, based on the maximum number (PA) of motion vectors allowed for an image block having a predetermined area and the number (PB) of motion vectors of a decoded image block contained in the image block having the predetermined area.

摘要翻译： 视频编码装置包括：编码控制装置11，用于基于允许具有预定区域的图像块的运动矢量的最大数目（PA）和数字（PB）来控制要编码的CU的PU间分配类型; 包含在具有预定区域的图像块中的编码图像块的运动矢量。 视频解码装置包括：解码控制装置，用于根据对具有预定区域的图像块所允许的运动矢量的最大数目（PA）和数字（PB）的数量（PB），控制要解码的CU的PU间分配类型 包含在具有预定区域的图像块中的解码图像块的运动矢量。

公开(公告)号：US20130121407A1

公开(公告)日：2013-05-16

申请号：US13809353

申请日：2011-09-12

申请人： Keiichi Chono ,  Yuzo Senda ,  Junji Tajime ,  Hirofumi Aoki ,  Kenta Senzaki

发明人： Keiichi Chono ,  Yuzo Senda ,  Junji Tajime ,  Hirofumi Aoki ,  Kenta Senzaki

IPC分类号： H04N7/26

CPC分类号： H04N19/14 ,  H04N19/117 ,  H04N19/154 ,  H04N19/169 ,  H04N19/61 ,  H04N19/80 ,  H04N19/86 ,  H04N19/865

摘要： A video encoding device and a video decoding device prevent an increase in the number of lines of a reference line buffer in a pseudo random noise injection process. The video encoding device includes: an inverse quantization unit for inverse-quantizing a quantization index to obtain a quantization representative value; an inverse frequency transform unit for inverse-transforming the quantization representative value obtained by the inverse quantization unit, to obtain a reconstructed image block; and an asymmetrical distortion removal filter unit for injecting pseudo random noise to an area asymmetrical about a boundary of the reconstructed image block.

摘要翻译： 视频编码装置和视频解码装置防止在伪随机噪声注入过程中参考线缓冲器的行数增加。 视频编码装置包括：逆量化单元，用于对量化索引进行逆量化以获得量化代表值; 逆频率变换单元，用于逆变换由所述逆量化单元获得的量化代表值，以获得重构图像块; 以及用于将伪随机噪声注入到关于重建图像块的边界不对称的区域的非对称失真去除滤波器单元。

公开(公告)号：US20130114690A1

公开(公告)日：2013-05-09

申请号：US13512824

申请日：2010-10-27

申请人： Keiichi Chono ,  Yuzo Senda ,  Junji Tajime ,  Hirofumi Aoki ,  Kenta Senzaki

发明人： Keiichi Chono ,  Yuzo Senda ,  Junji Tajime ,  Hirofumi Aoki ,  Kenta Senzaki

IPC分类号： H04N7/26 ,  H04N7/32

CPC分类号： H04N19/61 ,  H04N19/82 ,  H04N19/86

摘要： To efficiently reduce contour and stair-step artifacts.A video encoding device includes an inverse quantization means for inversely quantizing a quantization index to obtain a quantization representative value, an inverse frequency transformation means for inversely converting the quantization representative value obtained by the inverse quantization means to obtain a reconstructed image block, and a noise inject means for determining a pseudorandom noise injecting position based on information on extension of the reconstructed image block and injecting a pseudorandom noise into an image at the pseudorandom noise injecting position.

摘要翻译： 有效减少轮廓和阶梯的人造物。 视频编码装置包括用于逆量化量化指标以获得量化代表值的逆量化装置，用于逆变换由逆量化装置获得的量化代表值以获得重构图像块的反频率变换装置，以及噪声 注入装置，用于基于关于重建图像块的扩展的信息确定伪随机噪声注入位置，并将伪随机噪声注入到伪随机噪声注入位置的图像中。