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1. 发明申请

US20120163583A1 DIGITAL WATERMARK EMBEDDING DEVICE, COMPUTER-READABLE RECORDING MEDIUM, AND DIGITAL WATERMARK DETECTING DEVICE AND COMPUTER-READABLE RECORDING MEDIUM 有权
标题翻译：数字水印嵌入式设备，计算机可读记录介质和数字水印检测设备和计算机可读记录介质
公开(公告)号：US20120163583A1
公开(公告)日：2012-06-28
申请号：US13296976
申请日：2011-11-15
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： H04L9/28
CPC分类号： H04L9/3226 , G06T1/0085 , G06T2201/0051 , G06T2201/0063 , G10L19/018 , H04L2209/608 , H04N1/32149 , H04N2201/3236 , H04N2201/324 , H04N2201/3284
摘要： An digital watermark embedding device including an interface unit configured to acquire content in a digital form and digital watermark information, the device includes, a codeword generating unit configured to generate a base codeword including a bit sequence including the digital watermark information; a shifting unit configured to generate a plurality of correcting codewords differing from one another by permutating an arrangement in the bit sequence included in the base codeword depending on a plurality of shift amounts, the plurality of shift amounts differing from one digital watermark information to another, under a predetermined permutation rule; and a watermark superimposing unit configured to embed the plurality of correcting codewords in the content.
摘要翻译：一种数字水印嵌入装置，包括被配置为以数字形式获取内容的接口单元和数字水印信息，所述装置包括：码字生成单元，被配置为生成包括包含所述数字水印信息的比特序列的基本码字; 移位单元，被配置为通过根据多个移位量排列包括在基本码字中的比特序列中的布置来生成彼此不同的多个校正码字，所述多个移位量与一个数字水印信息不同，在预定的排列规则下; 以及水印叠加单元，被配置为将所述多个校正码字嵌入在所述内容中。

2. 发明申请

US20090245511A1 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：US20090245511A1
公开(公告)日：2009-10-01
申请号：US12407119
申请日：2009-03-19
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： H04L9/00
CPC分类号： H04N1/44 , H04N1/4486
摘要： In an image encryption apparatus, each of pixel-value inverse-converters applies pixel-value inverse-conversion on an input image in each of previously-encrypted areas. An image combiner superimposes images with inversely-converted pixels in the previously-encrypted areas to the input image to obtain a ready-to-encrypt image. An image encryptor scrambles blocks in the ready-to-encrypt image. A pixel-value converter applies pixel-value conversion on each of scrambled blocks to obtain a multiply-encrypted image. In an image decryption apparatus, a pixel-value inverse-converter applies pixel-value inverse-conversion on each scrambled block in the multiply-encrypted image to obtain a dot-erased image. An image decryptor inversely scrambles the scrambled blocks in the dot-erased image to obtain a decrypted image. Each of pixel-value converters applies pixel-value conversion on the decrypted image in each of previously-encrypted areas. An image combiner superimposes images with converted pixels in the previously-encrypted areas to the decrypted image to obtain a previously-encrypted image.
摘要翻译：在图像加密装置中，每个像素值逆变换器对每个先前加密的区域中的输入图像应用像素值逆变换。图像组合器将先前加密的区域中的逆转换像素的图像叠加到输入图像，以获得准备加密的图像。图像加密器对准加密图像中的块进行加扰。像素值转换器对每个加扰块应用像素值转换以获得加密图像。在图像解密装置中，像素值逆变换器对乘法加密图像中的每个加扰块应用像素值逆变换以获得点删除图像。图像解密器对点擦除图像中的加扰块进行反相扰频，以获得解密的图像。每个像素值转换器对每个先前加密的区域中的解密图像应用像素值转换。图像组合器将先前加密区域中的转换像素的图像与解密图像叠加，以获得预先加密的图像。

3. 发明申请

US20110280395A1 IMAGE ENCRYPTION DEVICE, IMAGE DECRYPTION DEVICE AND METHODS 审中-公开
标题翻译：图像加密设备，图像分解设备和方法
公开(公告)号：US20110280395A1
公开(公告)日：2011-11-17
申请号：US13088742
申请日：2011-04-18
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： H04L9/28
CPC分类号： H04N1/448 , G09C1/04
摘要： Constraints are added to the size of an encryption area at the time of encryption processing. For example, if the respective number of horizontal and vertical divided blocks is divided by a predetermined positive integer, the size of the encryption area is limited such that the remaining is a certain number of 0 (namely, a multiple of the predetermined positive integer to the respective number of blocks) or 1 or more. Block positions in the encryption area are detected according to the constraints of the number of blocks of an encryption image as the decryption processing corresponding to the encryption processing. Because the number of horizontal and vertical blocks is previously limited at the time of the encryption, the possibility of the number of blocks to be considered in the detection of the block positions is reduced, resulting in improved decryption accuracy.
摘要翻译：限制在加密处理时被加到加密区的大小上。例如，如果相应数量的水平和垂直分割块被预定的正整数除以，则加密区域的大小被限制，使得剩余部分是一定数量的0（即，预定的正整数到相应的块数）或1个或更多个。根据加密图像的块的数量的约束来检测加密区域中的块位置作为与加密处理相对应的解密处理。由于在加密时预先限制了水平和垂直块的数量，所以在检测块位置时要考虑块的数量的可能性减小，从而提高了解密精度。

4. 发明申请

US20090323950A1 Image encryption/decryption apparatus, method and program 有权
标题翻译：图像加密/解密装置，方法和程序
公开(公告)号：US20090323950A1
公开(公告)日：2009-12-31
申请号：US12129266
申请日：2008-05-29
申请人： Shohei NAKAGATA , Kensuke Kuraki , Taizo Anan
发明人： Shohei NAKAGATA , Kensuke Kuraki , Taizo Anan
IPC分类号： H04N1/44 , H04L9/28
CPC分类号： G09C5/00
摘要： An image encryption apparatus encrypts a digital image by specifying a partial region from the digital image, converting the selected partial region into a processing image based on an encryption key, and specifying a position of the partial region by regularly converting a pixel value of the processing image.
摘要翻译：图像加密装置通过从数字图像中指定部分区域来加密数字图像，并且基于加密密钥将所选择的部分区域转换为处理图像，并且通过定期地转换处理的像素值来指定部分区域的位置图片。

5. 发明申请

US20120121086A1 IMAGE ENCRYPTION/DESCRYPTION DEVICE, METHOD, AND STORAGE MEDIUM STORING A PROGRAM 有权
标题翻译：图像加密/描述设备，方法和存储介质存储程序
公开(公告)号：US20120121086A1
公开(公告)日：2012-05-17
申请号：US13290923
申请日：2011-11-07
申请人： Shohei NAKAGATA , Hiroshi Iwanaga , Kensuke Kuraki , Jun Takahashi , Taizo Anan
发明人： Shohei NAKAGATA , Hiroshi Iwanaga , Kensuke Kuraki , Jun Takahashi , Taizo Anan
IPC分类号： H04N1/44
CPC分类号： H04N1/32203 , G06F21/6218 , G06F2221/2107 , G09C5/00 , H04L63/0428 , H04N1/32128 , H04N1/32219 , H04N1/32251 , H04N1/32272 , H04N1/32288 , H04N1/32315 , H04N1/32347 , H04N1/32352 , H04N1/4486
摘要： At the time of marker attachment (at the time of encryption), for example, image conversion in which pixels to be overwritten by a marker are selected and pruned in a distributed manner and the pruning positions are moved to a marker attachment position is performed, and the marker is attached to the marker attachment position obtained as a result. At the time of marker elimination (at the time of decryption), for example, image reverse conversion in which each pixel of the marker is moved to the original position before the marker attachment is performed, each moved pixel of the marker is recovered, and the marker is eliminated.
摘要翻译：在标记附着时（在加密时），例如，进行图像转换，其中选择要由标记重写的像素并以分布方式修剪和修剪位置移动到标记附着位置，并且将标记附着到作为结果获得的标记附着位置。在标记消除时（在解密时），例如，在执行标记附着之前，将标记的每个像素移动到原始位置的图像反向转换，恢复标记的每个移动的像素，并且标记被消除。

6. 发明申请

US20110228969A1 MARKER PLACEMENT DEVICE, MARKER PLACEMENT DETECTING DEVICE, AND COMPUTER READABLE STORAGE MEDIUM FOR STORING MARKER PLACEMENT PROGRAM 有权
标题翻译：标记放置设备，标记放置检测设备和用于存储标记放置程序的计算机可读存储介质
公开(公告)号：US20110228969A1
公开(公告)日：2011-09-22
申请号：US13010342
申请日：2011-01-20
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： G06K9/00
CPC分类号： G09C5/00 , H04N1/32352 , H04N1/4486
摘要： A marker placement device includes, a marker placement method decision section that decides, for every predetermined pitch from a starting edge of a side to an end edge of the side, a placement position of a marker for detecting a position within a rectangular image region, the placement position being along the side of the image region within an image. A marker adding section that adds the marker to the image according to the placement position decided is provided, where, when a gap shorter than the pitch remains between the end edge and the decided placement position closest to the end edge of the side, the marker placement method decision section decides a first marker placement position closest to the starting edge, and decides a subsequent marker placement position.
摘要翻译：标记放置装置包括：标记放置方法判定部，其从所述一侧的一侧的起始边缘到所述一侧的端部边缘的每个预定间距判定用于检测矩形图像区域内的位置的标记的放置位置，放置位置沿着图像内的图像区域的侧面。提供了一种标记添加部分，其根据所确定的放置位置将标记添加到图像中，其中当在端边缘和最靠近侧边的端边缘的确定的放置位置之间保持短于间距的间隙时，标记放置方法决定部决定最靠近起始边缘的第一标记放置位置，并且决定随后的标记放置位置。

7. 发明申请

US20090245512A1 IMAGE DECRYPTION APPARATUS 审中-公开
标题翻译：图像分解装置
公开(公告)号：US20090245512A1
公开(公告)日：2009-10-01
申请号：US12407893
申请日：2009-03-20
申请人： Motoo MASUI , Taizo ANAN , Kensuke KURAKI , Jun TAKAHASHI , Shohei NAKAGATA
发明人： Motoo MASUI , Taizo ANAN , Kensuke KURAKI , Jun TAKAHASHI , Shohei NAKAGATA
IPC分类号： H04L9/06
CPC分类号： G09C5/00
摘要： A display processor displays on a display screen an encrypted image accepted by an image data acceptor. An encrypted region acquirer extracts encrypted regions contained on the encrypted image. A target region selector or an authorized target region selector selects decryption target regions from among encrypted regions contained in the encrypted image. A decryption order determiner determines a decryption order of the decryption target regions. The display processor displays on the display screen a prompt for inputting a decryption key (or a password) used for decryption of the encrypted image in each of the decryption target regions in accordance with the decryption order. A decryption key acceptor accepts the decryption key input by a decryption user. An image decryptor performs a decryption process on the encrypted image in the decryption target regions in accordance with the decryption order. A decrypted image of each decryption target region is output.
摘要翻译：显示处理器在显示屏幕上显示由图像数据接收器接受的加密图像。加密区域获取器提取加密图像中包含的加密区域。目标区域选择器或授权目标区域选择器从包含在加密图像中的加密区域中选择解密目标区域。解密顺序确定器确定解密目标区域的解密顺序。显示处理器根据解密顺序在显示屏幕上显示用于输入用于解密每个解密目标区域中的加密图像的解密密钥（或密码）的提示。解密密钥接受者接受解密用户输入的解密密钥。图像解密器根据解密顺序对解密目标区域中的加密图像执行解密处理。输出每个解密对象区域的解密图像。

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