公开(公告)号：EP3084688B1

公开(公告)日：2018-07-11

申请号：EP14872747.2

申请日：2014-12-17

申请人： Infotoo International Limited

发明人： LAM, Wing Hong ,  LAU, Tak Wai

IPC分类号： G06K19/06

CPC分类号： G06K19/06103 ,  G06K19/06037 ,  G06K19/06056 ,  G06T1/0071 ,  H04N1/3216 ,  H04N1/32165 ,  H04N1/32293 ,  H04N1/32352

摘要： A composite information bearing device comprising an image pattern and a human readable data device. The human readable data device includes a set of human readable data symbols representing a first set of data. The first set of data includes a first data portion and a second data portion. The image pattern represents a second set of data and comprises a third data portion. One of the first or said second data portions is to form an identification code upon combination or concatenation with said third data portion, and the other one of said first or said second data portions not forming part of said identification code is to form a verification code, the verification code being related to said identification code by a scheme of operation.

公开(公告)号：EP2628131A4

公开(公告)日：2018-01-17

申请号：EP10858495

申请日：2010-10-12

申请人： HEWLETT-PACKARD DEV COMPANY L P

发明人： SIMSKE STEVEN J ,  VANS MARIE

IPC分类号： G06K19/06 ,  G06T1/00 ,  H04N1/32

CPC分类号： G06K19/06037 ,  G06Q10/0833 ,  G06Q10/10 ,  G06Q10/103 ,  G06T1/0071 ,  G06T2201/0051 ,  G06T2201/0064 ,  H04N1/32128 ,  H04N1/32293 ,  H04N1/32304 ,  H04N1/32325 ,  H04N2201/323 ,  H04N2201/3269 ,  H04N2201/3271 ,  H04N2201/3274 ,  H04N2201/3281

摘要： A system (10) for generating an incrementally completed security mark (20′″) includes a computer-readable medium encoded with a computer program. The computer program includes computer readable code for selecting a carrier object (20, 20′, 20″, 20′″); computer readable code for selecting a number of steps in a workflow associated with the carrier object (20, 20′, 20″, 20′″) and a security level for each step in the workflow; computer readable code for determining available carrier object candidate areas (T1, T2, T3, T4, T5) to which to write information at each step in the workflow; and computer readable code for determining a number of bits to be input at each step in the workflow based upon the respective security levels and the available candidate areas (T1, T2, T3, T4, T5). The system further includes memory and a processor operatively coupled to the memory and to the computer-readable medium.

公开(公告)号：EP3100448A4

公开(公告)日：2017-07-05

申请号：EP14880527

申请日：2014-01-30

申请人： HEWLETT-PACKARD DEV COMPANY L P

发明人： ULICHNEY ROBERT ,  GAUBATZ MATTHEW D ,  POLLARD STEPHEN

IPC分类号： H04N1/32 ,  G06T1/00 ,  H04N1/393 ,  H04N1/405

CPC分类号： H04N1/32325 ,  G06T1/005 ,  G06T1/0057 ,  G06T2201/0051 ,  G06T2201/0083 ,  H04N1/32219 ,  H04N1/32256 ,  H04N1/32267 ,  H04N1/32277 ,  H04N1/32293 ,  H04N1/3232 ,  H04N1/4055 ,  H04N1/4486 ,  H04N5/913 ,  H04N19/467 ,  H04N2005/91335 ,  H04N2201/3281 ,  H04N2201/3283 ,  H04N2201/3284

摘要： A data-bearing image (391) is created from a carrier image (371). The carrier image (371) is scaled to produce a scaled image. A clustered-dot halftone screen is applied to the scaled image to produce a halftone image. A resulting number of cells in the halftone image conforms to a cell count (372) that includes a horizontal cell value and a vertical cell value. Payload data is encoded into the halftone image to produce a data-bearing halftone image, including shifting pixel clusters within cells of the halftone image that include pixel clusters.

摘要翻译： 从载体图像（371）创建数据承载图像（391）。 载体图像（371）被缩放以产生缩放的图像。 将聚类点半色调网屏应用于缩放图像以产生半色调图像。 半色调图像中的最终数量的单元符合包括水平单元值和垂直单元值的单元计数（372）。 有效载荷数据被编码到半色调图像中以产生数据承载半色调图像，包括在半色调图像的包含像素簇的单元内移位像素簇。

公开(公告)号：EP2628131A1

公开(公告)日：2013-08-21

申请号：EP10858495.4

申请日：2010-10-12

申请人： Hewlett-Packard Development Company, L.P.

发明人： SIMSKE, Steven J. ,  VANS, Marie

IPC分类号： G06K9/18

CPC分类号： G06K19/06037 ,  G06Q10/0833 ,  G06Q10/10 ,  G06Q10/103 ,  G06T1/0071 ,  G06T2201/0051 ,  G06T2201/0064 ,  H04N1/32128 ,  H04N1/32293 ,  H04N1/32304 ,  H04N1/32325 ,  H04N2201/323 ,  H04N2201/3269 ,  H04N2201/3271 ,  H04N2201/3274 ,  H04N2201/3281

摘要： A system (10) for generating an incrementally completed security mark (20′″) includes a computer-readable medium encoded with a computer program. The computer program includes computer readable code for selecting a carrier object (20, 20′, 20″, 20′″); computer readable code for selecting a number of steps in a workflow associated with the carrier object (20, 20′, 20″, 20′″) and a security level for each step in the workflow; computer readable code for determining available carrier object candidate areas (T1, T2, T3, T4, T5) to which to write information at each step in the workflow; and computer readable code for determining a number of bits to be input at each step in the workflow based upon the respective security levels and the available candidate areas (T1, T2, T3, T4, T5). The system further includes memory and a processor operatively coupled to the memory and to the computer-readable medium.

公开(公告)号：EP1619873A1

公开(公告)日：2006-01-25

申请号：EP04720235.3

申请日：2004-03-12

申请人： Oki Electric Industry Co., Ltd.

发明人： MAENO, Kurato, Oki Electric Industry Co., Ltd.

IPC分类号： H04N1/387

CPC分类号： H04N1/32203 ,  H04N1/32144 ,  H04N1/32224 ,  H04N1/32261 ,  H04N1/32293

摘要： The present invention is relate to watermark information embedding apparatus and method for the same, watermark information detecting apparatus and method for the same, and method of containing watermark document. A document image generator (101) generates a document image according to document data (105). A watermark image generator (102) generates a watermark image. The watermark information (106) is denoted with dot pattern, and the dot pattern within the outline of the watermark information are of special value. A synthesizer (103) overlaps document image generated from the document image generator (101) and the watermark image generated from the watermark image generator (102) so as to generate a containing watermark document image.

摘要翻译： 本发明所要涉及水印信息嵌入设备和方法相同的，水印信息检测设备和方法，对于相同的和含有水印的文档的方法。 的文件图像发生器（101）生成一个文件图像gemäß文档数据（105）。 水印图像生成器（102）生成一个水印图像。 水印信息（106）被表示为用点图案，并且水印信息的轮廓内的点阵图形是具有特殊价值。 合成器（103）重叠从文档图像生成器（101）和从所述水印图像生成器（102）所生成的水印图像生成的文档图像，以便产生一个包含水印的文档图像。

公开(公告)号：EP1471722A3

公开(公告)日：2005-07-06

申请号：EP04009683.6

申请日：2004-04-23

申请人： Kabushiki Kaisha Toshiba

发明人： Tokuda, Shinya Intellectual Property Division ,  Yamaguchi, Takashi Intellectual Property Division

IPC分类号： H04N1/32

CPC分类号： H04N1/32203 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0083 ,  H04N1/32208 ,  H04N1/32251 ,  H04N1/32293 ,  H04N1/32309

摘要： Composite image information which is generated by embedding invisible sub-information in visible main image information and recorded on a recording medium (M) is read. A spatial frequency component unique to key information used to restore the sub-information is extracted from the composite image information read from the recording medium (M). The sub-information is reconstructed from the extracted spatial frequency component.

公开(公告)号：EP1362474A1

公开(公告)日：2003-11-19

申请号：EP02710255.7

申请日：2002-02-11

申请人： Koninklijke Philips Electronics N.V.

发明人： KALKER, Antonius, A., C., M.

IPC分类号： H04N1/32 ,  G06T1/00 ,  H04N5/913 ,  G11B20/00

CPC分类号： H04N5/913 ,  G06T1/0071 ,  G11B20/00086 ,  G11B20/00884 ,  H04N1/32149 ,  H04N1/3216 ,  H04N1/32293 ,  H04N1/32304 ,  H04N21/8358 ,  H04N2005/91335

摘要： A pseudo-symmetric watermark is watermark pattern that is built up from a finite number of basic pattern by tiling. The well-known WaterCast pattern that is built up from one single pattern is a special case of this, and is referred to as a symmetric watermark pattern. It is well known that symmetric patterns allow an efficient detection method that consist of two phases, viz. first an accumulation phase, followed by a cyclic sliding correlation with the basic pattern over the accumulated data. The invention provides a detection method for pseudo-symmetric watermarks with a similar reduction in complexity as with symmetric watermarks, i.e. an accumulation phase followed by one or more cyclic sliding correlation steps (using the finite number of basic patterns). Let W1, ...., WN be the set of basic patterns, all of size M. The suspect signal is folded (31) as if there was only a single basic pattern. The fold buffer will have the sum pattern W = W1 + .... + WN (39) as a strong component. The presence of the watermark can then be detected by a cyclic sliding correlating with W.

公开(公告)号：EP1137252A3

公开(公告)日：2002-05-08

申请号：EP01200377.8

申请日：2001-02-05

申请人： EASTMAN KODAK COMPANY

发明人： Wen, Xin, c/o Eastman Kodak Company

IPC分类号： H04N1/32

CPC分类号： H04N1/32208 ,  G06T1/0021 ,  H04N1/32144 ,  H04N1/32293 ,  H04N2201/3239 ,  H04N2201/324

摘要： A method for embedding information in a digital image by an imaging device that is electronically connected to a network server includes storing a digital image having first embedded information in an electronic memory at a network server and sending the digital image having the first embedded information from the network server to the imaging device. The method further includes producing second information and using the imaging device to embed the second information in the digital image having the first embedded information to produce a digital image having the first and second embedded information.

公开(公告)号：EP0705022B1

公开(公告)日：2000-11-29

申请号：EP95306889.7

申请日：1995-09-29

申请人： CANON KABUSHIKI KAISHA

发明人： Kawana, Takashi

IPC分类号： H04N1/32

CPC分类号： H04N1/0402 ,  H04N1/00838 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/32203 ,  H04N1/32208 ,  H04N1/32251 ,  H04N1/32293 ,  H04N1/32309 ,  H04N2201/0082 ,  H04N2201/3205 ,  H04N2201/327 ,  H04N2201/3271

公开(公告)号：EP1022678A2

公开(公告)日：2000-07-26

申请号：EP99309199.0

申请日：1999-11-18

申请人： Nippon Telegraph and Telephone Corporation

发明人： Nakamura, Takao, Nippon Telegr. and Teleph. Corp. ,  Ogawa, Hiroshi, Nippon Telegr. and Teleph. Corp. ,  Tomioka, Atsuki, Nippon Telegr. and Teleph. Corp. ,  Takashima, Youichi, Nippon Teleg. and Teleph. Corp

IPC分类号： G06T1/00

CPC分类号： G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0061 ,  G06T2201/0083 ,  G06T2201/0202 ,  H04N1/32203 ,  H04N1/32208 ,  H04N1/32293 ,  H04N2201/3233 ,  H04N2201/327

摘要： A method for embedding a watermark into digital data, when the watermark is to be embedded in a digital image, independently changes real number components and imaginary number components of each of coefficient values of a complex watermark coefficient matrix using key, from the watermark to be embedded in the digital image, a step for performing a discrete Fourier transform on the sequence matrix of the changed watermark and generating a watermark pattern; and a step for adding like tiling the water mark pattern to the original image, and generating an embedded image.
Further more, a watermark detection method for detecting a watermark from a digital data, a step for separating a block from an arbitrary position on the detected object image, a step for performing a discrete Fourier transform on the block and obtaining a sequence matrix, a step for generating position information for a component that is to be detected and that is specified by the key, a step for detecting a position marker sequence by calculating a phase difference of a sequence by an amount of parallel displacement, for each item of the position information, and extracting offset information which is the amount of parallel displacement when there is agreement between a start point of an embedded watermark and a start point of the block cut from the detected object image, and a step for detecting the embedded watermark cut from the detected object image.

摘要翻译： 一种将水印嵌入到数字数据中的方法，当将水印嵌入到数字图像中时，使用密钥从水印中独立地改变复数水印系数矩阵的每个系数值的实数分量和虚数分量， 嵌入在数字图像中的步骤，用于对改变的水印的序列矩阵执行离散傅里叶变换并产生水印图案的步骤; 以及将水印图案分割成原始图像并添加嵌入图像的步骤。 此外，还提供了一种用于从数字数据中检测水印的水印检测方法，用于从被检测对象图像上的任意位置分离块的步骤，对该块执行离散付里叶变换并获得序列矩阵的步骤， 用于生成要被检测的组件的位置信息和由键指定的步骤，用于通过针对每个位置的每个项目计算一个序列的平均位移量来检测位置标记序列的步骤 信息，并且提取作为在嵌入水印的开始点与从检测到的对象图像切割的块的开始点之间一致时的平行位移量的偏移信息，以及用于检测从被检测对象图像切入的嵌入水印的步骤 检测到的物体图像。