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。

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。

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。

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。

公开(公告)号：US08170208B2

公开(公告)日：2012-05-01

申请号：US12232901

申请日：2008-09-25

申请人： Kensuke Kuraki ,  Jun Takahashi ,  Shohei Nakagata ,  Taizo Anan

发明人： Kensuke Kuraki ,  Jun Takahashi ,  Shohei Nakagata ,  Taizo Anan

IPC分类号： G06F21/00 ,  G09C5/00

CPC分类号： H04N1/44

摘要： When a decrypting apparatus receives an encrypted image, the apparatus detects the state of the encrypted image and determines whether the encrypted image is an image passed through only a digital medium or an analog medium, according to the state of the encrypted image. When the encrypted image is determined to be the image passed through only the digital medium, the decrypting apparatus switches to perform a digital decryption process and, when the encrypted image is determined to be the image passed through the analog medium, the decrypting apparatus switches to perform an analog decryption process.

摘要翻译： 当解密装置接收加密图像时，根据加密图像的状态，该装置检测加密图像的状态，并根据加密图像的状态确定加密图像是仅通过数字媒体或模拟媒体的图像。 当加密图像被确定为仅通过数字媒体的图像时，解密装置切换到执行数字解密处理，并且当加密图像被确定为通过模拟媒体的图像时，解密装置切换到 执行模拟解密过程。

公开(公告)号：US20110317935A1

公开(公告)日：2011-12-29

申请号：US13104599

申请日：2011-05-10

申请人： Taizo ANAN ,  Jun Takahashi ,  Kensuke Kuraki ,  Shohei Nakagata

发明人： Taizo ANAN ,  Jun Takahashi ,  Kensuke Kuraki ,  Shohei Nakagata

IPC分类号： G06K9/40

CPC分类号： G06K9/6278 ,  G09C5/00

摘要： An image processing device includes, a block division unit configured to divide at least a part of an area of an input image into a plurality of blocks; a block classification unit configured to classify each block in the input image into a white block and a black block based on a variance of luminance values in a white block that typically includes white pixels and a variance of luminance values in a black block that includes at least black pixels among white pixels and black pixels; and a luminance correction unit configured to correct a luminance value of each pixel in a black block in the input image based on an average luminance value of pixels in one or more white blocks in the vicinity of the black block.

摘要翻译： 图像处理装置包括：块分割单元，被配置为将输入图像的区域的至少一部分划分成多个块; 块分类单元，被配置为基于通常包括白色像素的白色块中的亮度值的方差和黑色块中的亮度值的方差，将输入图像中的每个块分类为白​​色块和黑色块，黑色块 白色像素和黑色像素之间的最小黑色像素; 以及亮度校正单元，被配置为基于黑色块附近的一个或多个白色块中的像素的平均亮度值来校正输入图像中的黑色块中的每个像素的亮度值。

公开(公告)号：US08935536B2

公开(公告)日：2015-01-13

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： H04L29/06 ,  G06F12/14 ,  H04K1/00 ,  H04N1/32 ,  G09C5/00 ,  H04N1/44 ,  G06F21/62

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。

公开(公告)号：US08818015B2

公开(公告)日：2014-08-26

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 ,  G09C5/00

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。

公开(公告)号：US20120328095A1

公开(公告)日：2012-12-27

申请号：US13605285

申请日：2012-09-06

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： G06F21/24

CPC分类号： G09C5/00 ,  H04N1/4486

摘要： An image decryption apparatus includes: an interface unit that acquires an encrypted image; and a processor adapted to: specify a block not presenting unevenness in brightness and a block presenting unevenness in brightness, among a plurality of first blocks into which the encrypted image is divided, and generate a decrypted image by moving each pixel of the encrypted image, in accordance with a predetermined rule; select, from among the second blocks located near the block of interest in a plurality of second blocks into which the decrypted image is divided, at least one second block that is included in the block not presenting unevenness in brightness on the encrypted image prior to generation of the decrypted image, as a reference value calculation block; and correcting the value of each pixel included in the block of interest, using the values of pixels included in the reference value calculation block.

摘要翻译： 一种图像解密装置，包括：获取加密图像的接口单元; 以及处理器，其适于：在加密图像被分割的多个第一块之中，指定不呈现亮度不均匀的块和呈现亮度不均匀的块，并且通过移动加密图像的每个像素来生成解密图像， 根据预定规则; 从位于解密图像被分割的多个第二块中的感兴趣块附近的第二块中选择包括在生成之前在加密图像上不呈现亮度不均匀的块中的至少一个第二块 的解密图像作为参考值计算块; 以及使用包括在参考值计算块中的像素的值来校正包括在感兴趣块中的每个像素的值。

公开(公告)号：US08306221B2

公开(公告)日：2012-11-06

申请号：US12411606

申请日：2009-03-26

申请人： Jun Takahashi ,  Taizo Anan ,  Kensuke Kuraki ,  Shohei Nakagata

发明人： Jun Takahashi ,  Taizo Anan ,  Kensuke Kuraki ,  Shohei Nakagata

IPC分类号： G06F21/00

CPC分类号： H04N1/4486

摘要： In an image encryption apparatus for visually encrypting an input image, an encryption area selector selects an encryption area within an input image including an area to be encrypted. An image converter divides the encryption area into a plurality of blocks. The image converter divides each block of the encryption area into a plurality of sub-blocks. An image converter performs an image conversion including rotation and mirror-reverse in accordance with an encryption key on the image in each sub-block. The image converter scrambles the image on a block-by-block basis in accordance with the encryption key. A pixel value converter converts a pixel value of a minimal area in a block so that a position of the block may be detected.

摘要翻译： 在用于视觉上加密输入图像的图像加密装置中，加密区域选择器选择包括要加密的区域的输入图像内的加密区域。 图像转换器将加密区域划分成多个块。 图像转换器将加密区域的每个块划分成多个子块。 图像转换器根据每个子块中的图像上的加密密钥执行包括旋转和镜像反转的图像转换。 图像转换器根据加密密钥逐块地对图像进行加扰。 像素值转换器转换块中的最小区域的像素值，使得可以检测块的位置。