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1. 发明授权

US08270037B2 Digital watermark embedding apparatus and digital watermark detecting apparatus 有权
标题翻译：数字水印嵌入装置和数字水印检测装置
公开(公告)号：US08270037B2
公开(公告)日：2012-09-18
申请号：US12403030
申请日：2009-03-12
申请人： Kensuke Kuraki , Shohei Nakagata , Hideaki Ishii , Motoo Masui , Taizo Anan
发明人： Kensuke Kuraki , Shohei Nakagata , Hideaki Ishii , Motoo Masui , Taizo Anan
IPC分类号： H04N1/40
CPC分类号： H04N1/387 , H04N1/32144 , H04N1/32203 , H04N1/32219 , H04N1/32229 , H04N1/40
摘要： A plurality of background texture patterns each of which includes a region not having a dot and having a feature different from those of the other background texture patterns, are combined, and information is embedded in a background region of a document image. Then, a mathematical-morphology-based conversion is performed on the document image, and thereby a feature of a region not having a dot in each of the background texture patterns is extracted in order to identify the embedded information.
摘要翻译：组合多个背景纹理图案，每个背景纹理图案包括不具有点并且具有与其他背景纹理图案的特征不同的特征的区域，并且将信息嵌入在文档图像的背景区域中。然后，对文档图像进行基于数学形态的转换，从而提取每个背景纹理图案中不具有点的区域的特征，以便识别嵌入的信息。

2. 发明申请

US20080080009A1 ELECTRONIC WATERMARK EMBEDDING APPARATUS AND ELECTRONIC WATERMARK DETECTION APPARATUS 审中-公开
标题翻译：电子水印嵌入式设备和电子水印检测设备
公开(公告)号：US20080080009A1
公开(公告)日：2008-04-03
申请号：US11863606
申请日：2007-09-28
申请人： Motoo Masui , Kensuke Kuraki , Shohei Nakagata , Hideaki Ishii , Taizo Anan
发明人： Motoo Masui , Kensuke Kuraki , Shohei Nakagata , Hideaki Ishii , Taizo Anan
IPC分类号： G06K15/00
CPC分类号： H04N1/32309 , G06T1/0028 , G06T2201/0051 , H04N1/32229
摘要： An embedding area in which a background pattern can be embedded from the color document image is extracted. At least one of a color and a shape of a background pattern appropriate for the embedding area is determined depending on an area color of the embedding area. A background pattern image is generated by embedding watermark information in the embedding area using the determined background pattern.
摘要翻译：提取其中可以从彩色文档图像嵌入背景图案的嵌入区域。根据嵌入区域的区域颜色确定适合于嵌入区域的背景图案的颜色和形状中的至少一个。通过使用确定的背景图案在嵌入区域中嵌入水印信息来生成背景图案图像。

3. 发明申请

US20100042828A1 DOCUMENT DATA ENCRYPTION METHOD AND DOCUMENT DATA ENCRYPTION SYSTEM 审中-公开
标题翻译：文件数据加密方法和文件数据加密系统
公开(公告)号：US20100042828A1
公开(公告)日：2010-02-18
申请号：US12475780
申请日：2009-06-01
申请人： Motoo MASUI , Hideaki Ishii , Taizo Anan , Jun Takahashi , Kensuke Kuraki , Shohei Nakagata
发明人： Motoo MASUI , Hideaki Ishii , Taizo Anan , Jun Takahashi , Kensuke Kuraki , Shohei Nakagata
IPC分类号： H04L9/06 , H04L9/00
CPC分类号： G09C5/00 , H04L9/0825 , H04L2209/76
摘要： An encrypting device encrypts original document data by use of a password of an addressee, thereby generating encrypted document data. A decryption authority changing device, of which operating authority is held by the addressee, generates authority changing information M structured by encrypting the password of the addressee with a password of a proxy, and notifies a decrypting device of the information, of which the operating authority is held by the proxy. The decrypting device decrypts the password of the addressee by employing the password of the proxy, and decrypts the encrypted document data by use of the decrypted password of the addressee.
摘要翻译：加密设备通过使用收件人的密码加密原始文档数据，从而生成加密的文档数据。解密权限变更装置，其操作权限由收件人持有，生成通过用代理的密码加密收件人的密码而构成的权限变更信息M，并向解密装置通知信息的操作权限由代理人持有。解密装置通过使用代理的密码来解密收件人的密码，并使用收件人的解密密码解密加密的文件数据。

4. 发明授权

US08588414B2 Image encryption and image decryption apparatus and method 有权
标题翻译：图像加密和图像解密装置及方法
公开(公告)号：US08588414B2
公开(公告)日：2013-11-19
申请号：US12626104
申请日：2009-11-25
申请人： Hideaki Ishii , Taizo Anan , Kensuke Kuraki , Shohei Nakagata
发明人： Hideaki Ishii , Taizo Anan , Kensuke Kuraki , Shohei Nakagata
IPC分类号： H04L29/06
CPC分类号： H04N1/32144 , G09C5/00 , H04N1/32272 , H04N1/4486
摘要： Input data is converted into an image, and in the input image, an encryption region that is a region in which the image is to be encrypted. Meanwhile, on the basis of an encryption key, encryption key-related information that is information related to the encryption key is generated, and the encryption key-related information is embedded into the image in the encryption region, to generate a first intermediate image. Next, the first intermediate image is converted on the basis of the encryption key, to generate a second intermediate image. Then, the pixel values of the second intermediate image are converted so that the position of the encryption region can be specified. As a result of the conversion, an encrypted image in which the part corresponding to the encryption region in the input image is generated.
摘要翻译：输入数据被转换为图像，并且在输入图像中，加密区域是图像要被加密的区域。同时，基于加密密钥，生成与加密密钥相关的信息的加密密钥相关信息，并且将加密密钥相关信息嵌入到加密区域中的图像中，以生成第一中间图像。接下来，基于加密密钥来转换第一中间图像，以生成第二中间图像。然后，转换第二中间图像的像素值，使得可以指定加密区域的位置。作为转换的结果，生成其中与输入图像中的加密区域相对应的部分被生成的加密图像。

5. 发明申请

US20100074443A1 IMAGE ENCRYPTION AND IMAGE DECRYPTION APPARATUS AND METHOD 有权
标题翻译：图像加密和图像分解装置和方法
公开(公告)号：US20100074443A1
公开(公告)日：2010-03-25
申请号：US12626104
申请日：2009-11-25
申请人： Hideaki ISHII , Taizo Anan , Kensuke Kuraki , Shohei Nakagata
发明人： Hideaki ISHII , Taizo Anan , Kensuke Kuraki , Shohei Nakagata
IPC分类号： H04N1/44 , H04L9/00
CPC分类号： H04N1/32144 , G09C5/00 , H04N1/32272 , H04N1/4486
摘要： Input data is converted into an image, and in the input image, an encryption region that is a region in which the image is to be encrypted. Meanwhile, on the basis of an encryption key, encryption key-related information that is information related to the encryption key is generated, and the encryption key-related information is embedded into the image in the encryption region, to generate a first intermediate image. Next, the first intermediate image is converted on the basis of the encryption key, to generate a second intermediate image. Then, the pixel values of the second intermediate image are converted so that the position of the encryption region can be specified. As a result of the conversion, an encrypted image in which the part corresponding to the encryption region in the input image is generated.
摘要翻译：输入数据被转换为图像，并且在输入图像中，加密区域是图像要被加密的区域。同时，基于加密密钥，生成与加密密钥相关的信息的加密密钥相关信息，并且加密密钥相关信息被嵌入到加密区域中的图像中，以生成第一中间图像。接下来，基于加密密钥来转换第一中间图像，以生成第二中间图像。然后，转换第二中间图像的像素值，使得可以指定加密区域的位置。作为转换的结果，生成其中与输入图像中的加密区域相对应的部分被生成的加密图像。

6. 发明授权

US08843756B2 Image processing apparatus and image processing method 有权
标题翻译：图像处理装置和图像处理方法
公开(公告)号：US08843756B2
公开(公告)日：2014-09-23
申请号：US12292955
申请日：2008-12-01
申请人： Jun Takahashi , Shohei Nakagata , Kensuke Kuraki , Taizo Anan
发明人： Jun Takahashi , Shohei Nakagata , Kensuke Kuraki , Taizo Anan
IPC分类号： G06F21/00 , G06F11/07 , H04N3/14 , H04N5/232 , G06T7/20 , G06T7/00 , G06K9/00
CPC分类号： G06F21/00 , G06F11/0733 , G06K9/00 , G06T7/00 , G06T7/20 , H04N1/448 , H04N1/4486 , H04N3/155 , H04N5/23229 , H04N5/23254
摘要： An image processing apparatus sections an image to be processed into a plurality of blocks, rearranges the blocks into positions specified by an encryption key that uniquely specifies the positions of the blocks in the image, determines a computing method used to convert pixel values of pixels that form a minimum area included in each of the blocks after the blocks are rearranged based on the pixel values of predetermined pixels that do not belong to the minimum area, and converts the pixel values based on the computing method.
摘要翻译：图像处理装置将要处理的图像划分为多个块，将块重排为由唯一指定图像中的块的位置的加密密钥指定的位置，确定用于转换像素值的像素值的计算方法基于不属于最小区域的预定像素的像素值重新排列块之后，形成包括在每个块中的最小区域，并且基于计算方法转换像素值。

7. 发明申请

US20120163653A1 DIGITAL WATERMARK EMBEDDING APPARATUS, DIGITAL WATERMARK EMBEDDING METHOD, AND DIGITAL WATERMARK DETECTION APPARATUS 有权
标题翻译：数字水印嵌入式设备，数字水印嵌入方法和数字水印检测设备
公开(公告)号：US20120163653A1
公开(公告)日：2012-06-28
申请号：US13331220
申请日：2011-12-20
申请人： Taizo ANAN , Kensuke Kuraki , Shohei Nakagata
发明人： Taizo ANAN , Kensuke Kuraki , Shohei Nakagata
IPC分类号： G06K9/00
CPC分类号： H04N19/467 , G06T1/0021 , G06T1/0085 , G06T2201/0051 , G06T2201/0061 , H04N21/8358
摘要： A digital watermark embedding apparatus includes an interface unit which acquires video data and digital watermark information, and a processing unit which embeds the digital watermark information into the video data. The processing unit is adapted to cause the area of a watermark pattern formed by a plurality of pixels having a prescribed value, and superimposed on each image contained in the video data, to vary in periodic fashion over time according to the value of a symbol contained in the digital watermark information, and correct, using the prescribed value, the value of each pixel contained in a region where each image in the video data and the watermark pattern corresponding to that image overlap each other.
摘要翻译：数字水印嵌入装置包括：获取视频数据和数字水印信息的接口单元;以及将数字水印信息嵌入到视频数据中的处理单元。处理单元适于使由具有规定值的多个像素形成的水印图案的区域，并且叠加在视频数据中包含的每个图像上，根据包含的符号的值，以周期性方式随时间变化在数字水印信息中，并且使用规定值来校正包含在视频数据中的每个图像和与该图像相对应的水印图案的区域中的每个像素的值彼此重叠。

8. 发明申请

US20090214033A1 IMAGE ENCRYPTION APPARATUS AND IMAGE DECRYPTION APPARATUS 审中-公开
标题翻译：图像加密装置和图像分解装置
公开(公告)号：US20090214033A1
公开(公告)日：2009-08-27
申请号：US12338218
申请日：2008-12-18
申请人： Shohei Nakagata , Taizo Anan , Kensuke Kuraki , Jun Takahashi
发明人： Shohei Nakagata , Taizo Anan , Kensuke Kuraki , Jun Takahashi
IPC分类号： H04L9/14 , H04L9/00 , H04L9/16
CPC分类号： H04N1/4486 , G09C5/00 , H04L9/088 , H04N1/4413 , H04N1/4426
摘要： Area data indicating an encryption area of image data and level data indicating an authority level for the encryption area are received. Upon being triggered by an input password, an encryption key is generated for each received authority level. Check data to be detected in verifying whether or not the encrypted image data in the encryption area is appropriately decrypted through decryption is implanted in the encryption area. Image encryption is performed on the encryption area where the check data is implanted, by using the encryption key corresponding to the authority level designated for the encryption area. In decryption, all decryption keys corresponding to all authority levels lower than or equal to the set authority level are used to decrypt each encryption area and determines whether or not an appropriate decryption has been performed on the basis of the result of the detection of the check data.
摘要翻译：接收表示图像数据的加密区域和指示加密区域的权限级别的级数据的区域数据。由输入密码触发时，会为每个接收到的权限级别生成加密密钥。在验证加密区域中的加密图像数据是否通过解密适当地解密时，检查要检测的数据被植入加密区域。通过使用与为加密区域指定的授权级别相对应的加密密钥，在植入了检查数据的加密区域上执行图像加密。在解密中，使用与所设置的权限级别以下的所有权限级别相对应的所有解密密钥来解密每个加密区域，并根据检查结果确定是否已经执行了适当的解密数据。

9. 发明授权

US08861781B2 Digital watermark embedding apparatus and method 有权
标题翻译：数字水印嵌入装置及方法
公开(公告)号：US08861781B2
公开(公告)日：2014-10-14
申请号：US13476137
申请日：2012-05-21
申请人： Kensuke Kuraki , Shohei Nakagata , Taizo Anan
发明人： Kensuke Kuraki , Shohei Nakagata , Taizo Anan
IPC分类号： G06T1/00
CPC分类号： G06T1/0085 , G06T2201/0051
摘要： An apparatus includes: a generator which generates a first pattern including a plurality of pixels having a first value, with an area of the first pattern changing in a constant cycle, and, a phase of cyclical change of the area changing based on a value of a symbol included in an inputted digital watermark information; a generator which generates a second pattern including a plurality of pixels having a second value, with an area of the second pattern changing with a frequency characteristic that is different from the cycle of change of the area; and a unit which superimposes the first and the second pattern into each image area of images in time series constituting an inputted video image to correct a value of each pixel in an image area to which the first or the second pattern is superimposed according to the first and the second value.
摘要翻译：一种装置包括：发生器，其生成包括具有第一值的多个像素的第一图案，其中第一图案的区域以恒定周期改变，并且基于值的周期性变化的相位包括在输入的数字水印信息中的符号; 发生器，其生成包括具有第二值的多个像素的第二图案，其中所述第二图案的区域以与所述区域的变化周期不同的频率特性改变; 以及将第一和第二图案叠加在构成输入视频图像的时间序列的图像的每个图像区域中的单元，以根据第一和第二图案校正重叠了第一或第二图案的图像区域中的每个像素的值和第二个值。

10. 发明授权

US08339677B2 Image processing system, image processing apparatus, and image processing method 有权
标题翻译：图像处理系统，图像处理装置和图像处理方法
公开(公告)号：US08339677B2
公开(公告)日：2012-12-25
申请号：US13164851
申请日：2011-06-21
申请人： Shohei Nakagata , Kensuke Kuraki , Jun Takahashi , Taizo Anan
发明人： Shohei Nakagata , Kensuke Kuraki , Jun Takahashi , Taizo Anan
IPC分类号： H04N1/409
CPC分类号： G09C5/00 , G06T5/006 , G06T5/30 , G06T2207/10008 , G06T2207/20036 , H04L9/00
摘要： An image processing system includes: an image input unit which reads an image printed on a medium and generates electronic data representing the image; and a processing unit which corrects the image represented by the electronic data. The processing unit implements the functions of: detecting, from the image represented by the electronic data, a first pattern having a first size and shape that is attached to the image; measuring a degree of degradation by measuring an amount of displacement of the size of the detected first pattern from the first size; and correcting the image represented by the electronic data to reduce the degree of degradation.
摘要翻译：一种图像处理系统，包括：图像输入单元，读取打印在介质上的图像，并生成表示图像的电子数据; 以及处理单元，其校正由电子数据表示的图像。处理单元实现以下功能：从由电子数据表示的图像中检测具有附接到图像的第一尺寸和形状的第一图案; 通过从所述第一尺寸测量检测到的第一图案的尺寸的位移量来测量劣化程度; 并且校正由电子数据表示的图像以降低劣化程度。

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