公开(公告)号：US20050053259A1

公开(公告)日：2005-03-10

申请号：US10808279

申请日：2004-03-25

申请人： Wataru Asano ,  Tomoo Yamakage ,  Shinichiro Koto ,  Nakaba Kogure

发明人： Wataru Asano ,  Tomoo Yamakage ,  Shinichiro Koto ,  Nakaba Kogure

IPC分类号： G06T1/00 ,  G06K9/00 ,  G06T7/40 ,  G06T7/60 ,  H04N1/387 ,  H04N1/40 ,  H04N7/08 ,  H04N7/24

CPC分类号： G06T1/0064 ,  G06T2201/0052

摘要： An image size reduction unit reduces the image size of an input image signal, thereby generating a size-reduced image signal. A specific frequency component extraction unit extracts a specific frequency component signal from the size-reduced image signal. A phase controller controls the phase of the specific frequency component signal. A correlator computes a cross-correlation value between the phase-controlled specific frequency component signal and size-reduced image signal. A watermark information estimation unit estimates, from the cross-correlation value, watermark information embedded in the input image signal.

摘要翻译： 图像尺寸减小单元减小输入图像信号的图像尺寸，从而生成尺寸缩小图像信号。 特定频率分量提取单元从尺寸缩小图像信号中提取特定频率分量信号。 相位控制器控制特定频率分量信号的相位。 相关器计算相位控制特定频率分量信号和尺寸减小图像信号之间的互相关值。 水印信息估计单元从互相关值估计嵌入在输入图像信号中的水印信息。

公开(公告)号：US06741723B2

公开(公告)日：2004-05-25

申请号：US10327072

申请日：2002-12-24

申请人： Tomoo Yamakage ,  Hirofumi Muratani ,  Hisashi Yamada ,  Toru Kambayashi ,  Shinichiro Koto

发明人： Tomoo Yamakage ,  Hirofumi Muratani ,  Hisashi Yamada ,  Toru Kambayashi ,  Shinichiro Koto

IPC分类号： H04K100

CPC分类号： H04N7/08 ,  G06T1/005 ,  G06T1/0064 ,  G06T2201/0052 ,  G06T2201/0065 ,  G06T2201/0083 ,  H04N1/32149 ,  H04N1/32154 ,  H04N1/32165 ,  H04N1/32187 ,  H04N1/32203 ,  H04N1/32229 ,  H04N5/913 ,  H04N7/025 ,  H04N7/035 ,  H04N2005/91335 ,  H04N2201/3233 ,  H04N2201/327

摘要： A specific frequency extraction unit extracts a specific frequency component signal from an input image signal, a phase controller and amplitude controller control at least one of the phase and amplitude of the specific frequency component signal in accordance with watermark information, and a watermark information superposition unit superposes the specific frequency component signal on the input image signal to generate an image signal embedded with the watermark information.

公开(公告)号：US06314139B1

公开(公告)日：2001-11-06

申请号：US09144985

申请日：1998-09-01

申请人： Shinichiro Koto ,  Keiichiro Fujie

发明人： Shinichiro Koto ,  Keiichiro Fujie

IPC分类号： H04N712

CPC分类号： H04N19/46 ,  G11B27/036 ,  G11B27/28

摘要： Coding mode information, VBV buffer occupancy information, and display field phase information corresponding to a coded frame are extracted in units of coded frames of a video signal. Condition determination is performed, on the basis of these pieces of extracted information, with respect to a standardized editable point at which at least part of the coded data can be connected to another coded data seamlessly in terms of the coding mode, the buffer occupancy, and the display field phase. If it is determined that the editable point for which insertion designation is performed does not satisfy the standardized editable point conditions, the editable point, for which insertion designation is performed, is delayed until the conditions are satisfied, thereby inserting the editable point at the delayed time point.

摘要翻译： 以视频信号的编码帧为单位提取编码模式信息，VBV缓冲器占用信息和与编码帧对应的显示场相位信息。 根据这些提取的信息，根据编码模式，缓冲器占有率，编码数据的至少一部分能够与编码数据无缝连接的标准化可编辑点进行条件判定， 和显示场相位。 如果确定执行了插入指定的可编辑点不满足标准化的可编辑点条件，则执行插入指定的可编辑点被延迟直到满足条件，从而将可编辑点插入延迟的 时间点。

公开(公告)号：US20130188885A1

公开(公告)日：2013-07-25

申请号：US13593664

申请日：2012-08-24

申请人： Atsushi Matsumura ,  Shinichiro Koto

发明人： Atsushi Matsumura ,  Shinichiro Koto

IPC分类号： G06K9/36

CPC分类号： H04N19/137 ,  H04N19/103 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/50 ,  H04N19/91

摘要： According to one embodiment, a prediction unit generates a prediction block to be used for prediction of a coding target block, based on at least one reference block adjacent to the coding target block in the image. Each number of pixels in the coding target block and the prediction block is a power of two. A calculation unit calculates a residual block having residual pixel values between the coding target block and the prediction block. A decision unit decides whether to code the residual block, based on pixel values of at least one of the coding target block, the reference block and the prediction block. A coding unit codes the residual block by variable length coding, when the residual block is decided to be coded, and codes a skip flag representing the residual block not being coded when the residual block is not decided to be coded.

摘要翻译： 根据一个实施例，预测单元基于与图像中的编码目标块相邻的至少一个参考块，生成要用于编码目标块的预测的预测块。 编码对象块和预测块中的各像素数为2的幂。 计算单元计算在编码对象块和预测块之间具有残差像素值的残差块。 决定单元基于编码目标块，参考块和预测块中的至少一个的像素值来决定是否对残差块进行编码。 编码单元，当确定残差块被编码时，通过可变长度编码对残差块进行编码，并且当残差块未被确定编码时，编码表示不被编码的残留块的跳过标志。

公开(公告)号：US20130011075A1

公开(公告)日：2013-01-10

申请号：US13613796

申请日：2012-09-13

申请人： Naoto Date ,  Shinichiro Koto

发明人： Naoto Date ,  Shinichiro Koto

IPC分类号： G06K9/36

CPC分类号： H04N19/124

摘要： According to one embodiment, an encoding apparatus includes a first quantizer, a second quantizer, a predictor and a calculator. The first quantizer quantizes an input block to obtain a first quantized block. The second quantizer quantizes a reference pixel to obtain at least one quantized value. The predictor predicts each target pixel in the first quantized block using the at least one quantized value and a quantized value of a pixel that is to be decoded preceding the target pixel in decoding order in the first quantized block to obtain a second quantized block. The calculator calculates a difference between the first quantized block and the second quantized block.

摘要翻译： 根据一个实施例，编码装置包括第一量化器，第二量化器，预测器和计算器。 第一量化器量化输入块以获得第一量化块。 第二量化器量化参考像素以获得至少一个量化值。 预测器使用第一量化块中的解码顺序中的至少一个量化值和要解码的目标像素之前的像素的量化值来预测第一量化块中的每个目标像素，以获得第二量化块。 计算器计算第一量化块和第二量化块之间的差。

公开(公告)号：US08090029B2

公开(公告)日：2012-01-03

申请号：US11411032

申请日：2006-04-26

申请人： Naoto Date ,  Wataru Asano ,  Shinichiro Koto

发明人： Naoto Date ,  Wataru Asano ,  Shinichiro Koto

IPC分类号： H04N7/18

CPC分类号： H04N19/577 ,  H04N19/105 ,  H04N19/142 ,  H04N19/172 ,  H04N19/51 ,  H04N19/61 ,  H04N19/87

摘要： A fade detection unit performs fade detection, and in a case where a judgment of fade-in has been made, an encoding control unit notifies a motion detection unit to perform encoding in a reverse order to a display order. The fade detection unit performs the fade detection, and in the case where the judgment of the fade-in or fade-out has been made, the encoding control unit notifies the motion detection unit to perform encoding while importance is attached to a prediction from an image having a larger information amount in a B picture.

摘要翻译： 淡入淡出检测单元执行淡入淡出检测，并且在进行淡入淡出的判断的情况下，编码控制单元以与显示顺序相反的顺序通知运动检测单元进行编码。 淡入淡出检测单元执行淡入淡出检测，并且在进行淡入淡出判定的情况下，编码控制单元通知运动检测单元执行编码，同时重要性附加到来自 在B图像中具有较大信息量的图像。

公开(公告)号：US07978768B2

公开(公告)日：2011-07-12

申请号：US11387758

申请日：2006-03-24

申请人： Shinichiro Koto

发明人： Shinichiro Koto

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

CPC分类号： H04N19/115 ,  H04N19/12 ,  H04N19/149 ,  H04N19/162 ,  H04N19/179 ,  H04N19/40 ,  H04N19/61

摘要： A recompression apparatus for video data possesses a first transcoder, which is able to generate an output video data by recompressing an input video data encoded by a first encode scheme, a second transcoder, which has a compressibility smaller than the first transcoder and is able to generate an output video data by recompressing an input video data by a second encode scheme, and a controller, which receives a recompression parameter including a reduction rate of a target bit rate of an output video data against an input video data, controls a transcoder to carry out compression encoding if the reduction rate is smaller than a threshold value and controls a transcoder to carry out recompression if the reduction rate is equal to or larger than the reduction value.

摘要翻译： 用于视频数据的再压缩装置具有第一代码转换器，其能够通过对由第一编码方案编码的输入视频数据进行再压缩来生成输出视频数据，第二代码转换器具有小于第一代码转换器的可压缩性，并且能够 通过第二编码方案对输入视频数据进行再压缩来生成输出视频数据，并且接收包括输出视频数据的目标比特率相对于输入视频数据的缩小率的再压缩参数的控制器控制代码转换器 如果缩小率小于阈值则执行压缩编码，并且如果缩小率等于或大于缩小值，则控制代码转换器执行再压缩。

公开(公告)号：US20110150089A1

公开(公告)日：2011-06-23

申请号：US13041081

申请日：2011-03-04

申请人： Takeshi CHUJOH ,  Shinichiro Koto ,  Yoshihiro Kikuchi

发明人： Takeshi CHUJOH ,  Shinichiro Koto ,  Yoshihiro Kikuchi

IPC分类号： H04N7/32

CPC分类号： H04N19/51 ,  H04N19/103 ,  H04N19/105 ,  H04N19/107 ,  H04N19/126 ,  H04N19/139 ,  H04N19/174 ,  H04N19/176 ,  H04N19/423 ,  H04N19/46 ,  H04N19/573 ,  H04N19/61 ,  H04N19/70

摘要： A video encoding method and apparatus to select one combination, for each block of an input video signal, from a plurality of combinations. Each combination includes a predictive parameter and at least one reference picture number determined in advance for the reference picture. A prediction picture signal is generated in accordance with the reference picture number and predictive parameter of the selected combination. A predictive error signal is generated representing an error between the input video signal and the prediction picture signal. Encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination is included.

摘要翻译： 一种视频编码方法和装置，用于从多个组合中选择对于输入视频信号的每个块的一个组合。 每个组合包括预测参数和预先为参考图片确定的至少一个参考图片编号。 根据所选择的组合的参考图像编号和预测参数来生成预测图像信号。 产生表示输入视频信号和预测图像信号之间的误差的预测误差信号。 包括预测误差信号的编码，运动矢量的信息和指示所选择的组合的索引信息。

公开(公告)号：US07944973B2

公开(公告)日：2011-05-17

申请号：US12553114

申请日：2009-09-03

申请人： Takeshi Chujoh ,  Shinichiro Koto ,  Yoshihiro Kikuchi ,  Akiyuki Tanizawa

发明人： Takeshi Chujoh ,  Shinichiro Koto ,  Yoshihiro Kikuchi ,  Akiyuki Tanizawa

IPC分类号： H04B1/66

CPC分类号： H04N19/573 ,  H04N19/105 ,  H04N19/107 ,  H04N19/134 ,  H04N19/46 ,  H04N19/61

摘要： A video encoding apparatus comprises a frame memory/predictive image generator having a first predictive mode for generating a predictive image signal by selecting a combination from among a plurality combinations of a reference image number and a plurality of predictive parameters, and a second predictive mode for generating a predictive image signal according to a predictive parameter computed based on reference image numbers of reference images and an image-to-image distance, and a variable-length encoder to select one of the first and second prediction modes by the number of reference images, and encode orthogonal transformation coefficient information concerning a predictive error signal of a predictive image signal with respect to input video signal, mode information indicating an encoding mode, motion vector information and combination of selected reference image number with predictive parameter index information indicating combination of selected reference image information.

公开(公告)号：US07889796B2

公开(公告)日：2011-02-15

申请号：US12481886

申请日：2009-06-10

申请人： Takeshi Chujoh ,  Shinichiro Koto ,  Yoshihiro Kikuchi

发明人： Takeshi Chujoh ,  Shinichiro Koto ,  Yoshihiro Kikuchi

IPC分类号： H04N7/18

CPC分类号： H04N19/51 ,  H04N19/103 ,  H04N19/105 ,  H04N19/107 ,  H04N19/126 ,  H04N19/139 ,  H04N19/174 ,  H04N19/176 ,  H04N19/423 ,  H04N19/46 ,  H04N19/573 ,  H04N19/61 ,  H04N19/70

摘要： A video encoding apparatus includes selecting one combination, for each block of an input video signal, from a plurality of combinations. Each combination includes a predictive parameter and at least one reference picture number determined in advance for the reference picture. A prediction picture signal is generated in accordance with the reference picture number and predictive parameter of the selected combination. A predictive error signal is generated representing an error between the input video signal and the prediction picture signal. Encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination is included.