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1. 发明申请

US20050053259A1 Digital watermark detection method and apparatus 失效
标题翻译：数字水印检测方法及装置
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。

2. 发明授权

US07471807B2 Digital watermark detection method and apparatus 失效
标题翻译：数字水印检测方法及装置
公开(公告)号：US07471807B2
公开(公告)日：2008-12-30
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： G06K9/00
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。

3. 发明授权

US07302573B2 Computer system and method for controlling output of reproduced video data 失效
标题翻译：用于控制再现视频数据输出的计算机系统和方法
公开(公告)号：US07302573B2
公开(公告)日：2007-11-27
申请号：US10755235
申请日：2004-01-13
申请人： Nakaba Kogure , Tomoo Yamakage , Hidenori Takeshima , Koichi Masukura , Taku Kato , Atsushi Ishihara , Wataru Asano
发明人： Nakaba Kogure , Tomoo Yamakage , Hidenori Takeshima , Koichi Masukura , Taku Kato , Atsushi Ishihara , Wataru Asano
IPC分类号： H04L9/00
CPC分类号： H04N21/4627 , H04N7/163 , H04N21/4143 , H04N21/4405 , H04N21/4408 , H04N21/8358
摘要： A computer system with a monitor display, comprises a decoder unit configured to decode video data containing digital watermark information to derive decoded data, and configured to determine, based on information included in the video data, whether or not first certification for certifying that the video data is legitimately reproduced data succeeds, and a graphics controller which determines, using the digital watermark information, whether or not second certification for certifying that the video data is to be protected from being copied succeeds, the graphics controller converting the decoded data into a protected decoded data from being copied and outputting the protected decoded data to the monitor display if the first certification and the second certification succeed, and the graphics controller inhibiting the decoded data from being output to the monitor display if the first certification fails and the second certification succeeds.
摘要翻译：一种具有监视器显示器的计算机系统，包括：解码器单元，被配置为对包含数字水印信息的视频数据进行解码以导出解码数据，并且被配置为基于视频数据中包括的信息来确定用于证明视频的第一认证数据合法再现数据成功，并且图形控制器确定使用数字水印信息来确定是否要保护视频数据的第二认证被复制成功，图形控制器将解码的数据转换成受保护的如果第一认证和第二认证成功，则被解码的数据被复制并将保护的解码数据输出到监视器显示器，并且如果第一认证失败并且第二认证成功，则将解码数据禁止输出到监视器显示器的图形控制器。

4. 发明申请

US20070195988A1 DIGITAL WATERMARK DETECTION METHOD AND APPARATUS 失效
标题翻译：数字水印检测方法和装置
公开(公告)号：US20070195988A1
公开(公告)日：2007-08-23
申请号：US11467804
申请日：2006-08-28
申请人： Nakaba Kogure , Noboru Yamaguchi , Tomoo Yamakage
发明人： Nakaba Kogure , Noboru Yamaguchi , Tomoo Yamakage
IPC分类号： G06K9/00
CPC分类号： G06T1/0064 , G06T2201/0052
摘要： A digital watermark detection apparatus includes an extraction unit extracting a specific frequency component signal from an input image signal, a first transformation unit orthogonal-transforming the image signal, a second transformation unit orthogonal-transforming the specific frequency component signal, a combination unit combining first and second transformed image signals from the first and second transformation units, a third transformation unit orthogonal-transforming a combined image signal, an estimation unit estimating embedded watermark information by searching for a peak appearing in a third transformed image signal of the third transformation unit, and a compressor compressing a target signal in amplitude based on a compression characteristic varying according to an amplitude and frequency of the target signal to obtain a compression signal, the target signal formed of at least one of the first transformed image signal, the second transformed image signal and the combined image signal.
摘要翻译：数字水印检测装置包括从输入图像信号提取特定频率分量信号的提取单元，正交变换图像信号的第一变换单元，正交变换特定频率分量信号的第二变换单元，第一以及来自第一和第二变换单元的第二变换图像信号，对组合图像信号进行正交变换的第三变换单元，估计单元，通过搜索出现在第三变换单元的第三变换图像信号中的峰值来估计嵌入水印信息，以及压缩器，其基于根据所述目标信号的幅度和频率而变化的压缩特性，以幅度压缩目标信号，以获得压缩信号，所述目标信号由所述第一变换图像信号，所述第二变换图像信号和组合图像信号。

5. 发明申请

US20060204030A1 Digital watermark detecting device and method thereof 失效
公开(公告)号：US20060204030A1
公开(公告)日：2006-09-14
申请号：US11337806
申请日：2006-01-24
申请人： Nakaba Kogure , Tomoo Yamakage
发明人： Nakaba Kogure , Tomoo Yamakage
IPC分类号： G06K9/00 , H04L9/00 , G06K9/36
CPC分类号： G06T1/0064 , G06T2201/0052 , G06T2201/0083
摘要： There is provided a digital watermarking detecting device that can accurately detect watermarking information weakened by an attack such as image cut-out, scaling or the like without increasing a calculation amount and a circuit scale. The digital watermarking detecting device includes an extractor 10 for extracting a signal of a specific frequency component from a watermarking embedded image, first orthogonal transformers 11A, 11B for calculating an orthogonally-transformed image of an extraction signal and an orthogonally-transformed image of a watermarking embedded image, amplitude adjusters 12A, 12B for adjusting the amplitudes of the two orthogonally-transformed images in accordance with the difference between the amplitude components of the two orthogonally-trans formed images, a compositor 13 for combining the two amplitude-adjusted orthogonally-transformed images, a second orthogonally-transformer 14 for subjecting the composite signal to orthogonal transformation to achieve a second orthogonally-transformed signal, and an estimator 15 for estimating the watermarking information on the basis of a peak appearing in the second orthogonally-transformed signal.

6. 发明申请

US20080273744A1 DIGITAL WATERMARKING METHOD AND APPARATUS 审中-公开
标题翻译：数字水印方法和装置
公开(公告)号：US20080273744A1
公开(公告)日：2008-11-06
申请号：US11946129
申请日：2007-11-28
申请人： Nakaba Kogure , Noboru Yamaguchi , Tomoo Yamakage
发明人： Nakaba Kogure , Noboru Yamaguchi , Tomoo Yamakage
IPC分类号： G06K9/00
CPC分类号： G06T1/0064 , G06T2201/0052 , G06T2201/0083
摘要： A digital watermark embedding apparatus including a first scaling unit to scale an input image signal to one of enlargement and reduction, an extraction unit extracting a specific frequency component signal from the scaled image signal, a digital watermark signal generator to generate a digital watermark signal based on the specific frequency component signal and watermark information, a second scaling unit to scale the digital watermark signal to the other of the enlargement and reduction, and a compositor to combine the scaled digital watermark signal with the input image signal to generate a watermarked image signal.
摘要翻译：一种数字水印嵌入装置，包括：第一缩放单元，用于将输入图像信号缩放到放大和缩小中的一个;提取单元，从缩放图像信号中提取特定频率分量信号;数字水印信号发生器，用于基于数字水印信号生成在特定频率分量信号和水印信息上，第二缩放单元将数字水印信号缩放到放大和缩小中的另一个;以及合成器，将缩放的数字水印信号与输入图像信号组合以生成加水印的图像信号。

7. 发明授权

US07894628B2 Digital watermark embedding apparatus and digital watermark detection apparatus 有权
标题翻译：数字水印嵌入装置及数字水印检测装置
公开(公告)号：US07894628B2
公开(公告)日：2011-02-22
申请号：US12591103
申请日：2009-11-09
申请人： Nakaba Kogure , Tomoo Yamakage
发明人： Nakaba Kogure , Tomoo Yamakage
IPC分类号： H04K1/00
CPC分类号： G06T1/0064 , G06T2201/0052 , G06T2201/0065 , H04N1/32187
摘要： A digital watermark embedding apparatus includes a scaling unit configured to scale at least a specific frequency component of an input image signal to generate a scaled image signal, a control unit configured to control at least one of a phase and amplitude of the scaled image signal in accordance with watermark information to generate a controlled image signal, and a combiner to combine the input image signal and the controlled image signal to generate an output image signal embedded with the watermark information.
摘要翻译：一种数字水印嵌入装置，包括：缩放单元，被配置为至少缩放输入图像信号的特定频率分量，以生成缩放图像信号;控制单元，被配置为控制所述缩放图像信号的相位和幅度中的至少一个，根据水印信息产生受控图像信号，以及组合器，组合输入图像信号和受控图像信号，以产生嵌入水印信息的输出图像信号。

8. 发明授权

US07653211B2 Digital watermark embedding apparatus and digital watermark detection apparatus 失效
公开(公告)号：US07653211B2
公开(公告)日：2010-01-26
申请号：US11357427
申请日：2006-02-21
申请人： Nakaba Kogure , Tomoo Yamakage
发明人： Nakaba Kogure , Tomoo Yamakage
IPC分类号： H04K1/00
CPC分类号： G06T1/0064 , G06T2201/0052 , G06T2201/0065 , H04N1/32187
摘要： A digital watermark embedding apparatus includes a scaling unit configured to scale at least a specific frequency component of an input image signal to generate a scaled image signal, a control unit configured to control at least one of a phase and amplitude of the scaled image signal in accordance with watermark information to generate a controlled image signal, and a combiner to combine the input image signal and the controlled image signal to generate an output image signal embedded with the watermark information.

9. 发明申请

US20100054531A1 Digital watermark embedding apparatus and digital watermark detection apparatus 有权
标题翻译：数字水印嵌入装置及数字水印检测装置
公开(公告)号：US20100054531A1
公开(公告)日：2010-03-04
申请号：US12591103
申请日：2009-11-09
申请人： Nakaba Kogure , Tomoo Yamakage
发明人： Nakaba Kogure , Tomoo Yamakage
IPC分类号： G06K9/00
CPC分类号： G06T1/0064 , G06T2201/0052 , G06T2201/0065 , H04N1/32187
摘要： A digital watermark embedding apparatus includes a scaling unit configured to scale at least a specific frequency component of an input image signal to generate a scaled image signal, a control unit configured to control at least one of a phase and amplitude of the scaled image signal in accordance with watermark information to generate a controlled image signal, and a combiner to combine the input image signal and the controlled image signal to generate an output image signal embedded with the watermark information.
摘要翻译：一种数字水印嵌入装置，包括：缩放单元，被配置为至少缩放输入图像信号的特定频率分量，以生成缩放图像信号;控制单元，被配置为控制所述缩放图像信号的相位和幅度中的至少一个，根据水印信息产生受控图像信号，以及组合器，组合输入图像信号和受控图像信号，以产生嵌入水印信息的输出图像信号。

10. 发明授权

US07646883B2 Digital watermark detection method and apparatus 失效
标题翻译：数字水印检测方法及装置
公开(公告)号：US07646883B2
公开(公告)日：2010-01-12
申请号：US11467804
申请日：2006-08-28
申请人： Nakaba Kogure , Noboru Yamaguchi , Tomoo Yamakage
发明人： Nakaba Kogure , Noboru Yamaguchi , Tomoo Yamakage
IPC分类号： G06K9/00 , H04L9/32 , H04N1/40
CPC分类号： G06T1/0064 , G06T2201/0052
摘要： A digital watermark detection apparatus includes an extraction unit extracting a specific frequency component signal from an input image signal, a first transformation unit orthogonal-transforming the image signal, a second transformation unit orthogonal-transforming the specific frequency component signal, a combination unit combining first and second transformed image signals from the first and second transformation units, a third transformation unit orthogonal-transforming a combined image signal, an estimation unit estimating embedded watermark information by searching for a peak appearing in a third transformed image signal of the third transformation unit, and a compressor compressing a target signal in amplitude based on a compression characteristic varying according to an amplitude and frequency of the target signal to obtain a compression signal, the target signal formed of at least one of the first transformed image signal, the second transformed image signal and the combined image signal.
摘要翻译：数字水印检测装置包括从输入图像信号提取特定频率分量信号的提取单元，正交变换图像信号的第一变换单元，正交变换特定频率分量信号的第二变换单元，第一以及来自第一和第二变换单元的第二变换图像信号，对组合图像信号进行正交变换的第三变换单元，估计单元，通过搜索出现在第三变换单元的第三变换图像信号中的峰值来估计嵌入水印信息，以及压缩器，其基于根据所述目标信号的幅度和频率而变化的压缩特性，以幅度压缩目标信号，以获得压缩信号，所述目标信号由所述第一变换图像信号，所述第二变换图像信号和组合图像信号。

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