公开(公告)号：EP1780636A2

公开(公告)日：2007-05-02

申请号：EP06121847.5

申请日：2005-01-06

申请人： MediaSec Technologies GmbH

发明人： Zhao, Jian ,  Picard, Justin

IPC分类号： G06F7/02

CPC分类号： H04N1/32251 ,  G06K9/00577 ,  G07D7/004 ,  G07D7/20 ,  H04N1/32229 ,  H04N1/32331 ,  H04N1/32352 ,  H04N5/85 ,  H04N5/913 ,  H04N2005/91328 ,  H04N2005/91335 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/327

摘要： Improved techniques for making copy detection patterns and using them to detect copying relationships between digital representations. The techniques include techniques for including a message in a copy detection pattern without altering the copy detection patterns entropy and reading the message, techniques for using a copy detection pattern on an analog form to determine whether the analog form is an original analog form without reference to a digital representation of the original of the analog form's copy detection pattern, techniques for increasing the sensitivity of copy detection using copy detection patterns by modifying one of two copy detection patterns that are being compared to take into account alterations resulting from the copying process, techniques for distributing a copy detection pattern across a document, and techniques for using the entropy of a copy detection pattern to locate the copy detection pattern. Also disclosed are applications of copy detection patterns with copying that involves transformations between the digital and analog forms and with digital-to-digital copying.

摘要翻译： 改进了制作复制检测模式的技术，并使用它们来检测数字表示之间的复制关系。 这些技术包括用于在复制检测模式中包括消息而不改变复制检测模式熵并读取消息的技术，用于使用模拟形式上的复制检测模式来确定模拟形式是否是原始模拟形式而不参考 模拟形式的复制检测图案的原件的数字表示，用于通过修改正在比较的两个复制检测图案中的一个来考虑由复制过程产生的改变来使用复制检测图案来增加复制检测的灵敏度的技术，技术 用于在文档上分发复制检测图案，以及用于使用复制检测图案的熵来定位复制检测图案的技术。 还公开了涉及复制的复制检测模式的应用，其涉及数字和模拟形式之间的转换以及数字 - 数字复制。

公开(公告)号：EP1780635A2

公开(公告)日：2007-05-02

申请号：EP06121845.9

申请日：2005-01-06

申请人： Thomson Licensing

发明人： Zhao, Jian ,  Picard, Justin

IPC分类号： G06F7/02

CPC分类号： H04N1/32251 ,  G06K9/00577 ,  G07D7/004 ,  G07D7/20 ,  H04N1/32229 ,  H04N1/32331 ,  H04N1/32352 ,  H04N5/85 ,  H04N5/913 ,  H04N2005/91328 ,  H04N2005/91335 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/327

摘要： Improved techniques for making copy detection patterns and using them to detect copying relationships between digital representations. The techniques include techniques for including a message in a copy detection pattern without altering the copy detection patterns entropy and reading the message, techniques for using a copy detection pattern on an analog form to determine whether the analog form is an original analog form without reference to a digital representation of the original of the analog form's copy detection pattern, techniques for increasing the sensitivity of copy detection using copy detection patterns by modifying one of two copy detection patterns that are being compared to take into account alterations resulting from the copying process, techniques for distributing a copy detection pattern across a document, and techniques for using the entropy of a copy detection pattern to locate the copy detection pattern. Also disclosed are applications of copy detection patterns with copying that involves transformations between the digital and analog forms and with digital-to-digital copying.

摘要翻译： 改进的技术用于制作拷贝检测图样（105），并利用它们来检测数字表示之间的复制关系。 该技术包括用于包含在拷贝检测图案（105）的消息，而不改变拷贝检测图样熵和读取消息的技术，用于使用确定性矿拷贝检测图案上成模拟形式无论模拟形式是原始模拟形式的技术 不参考模拟形式的拷贝检测图案的原始的数字表示，用于通过修改两个拷贝检测模式之一使用复制检测图案提高复印检测的灵敏度的技术也被比较以考虑改变从所述复制所得 过程中，技术用于跨文档分发拷贝检测图案，以及用于使用拷贝检测图案的熵来定位拷贝检测图案的技术。 所以盘游离缺失与复制所做的拷贝检测模式的应用程序涉及数字和模拟形式之间，并与数字到数字拷贝转换。

公开(公告)号：EP1744535A1

公开(公告)日：2007-01-17

申请号：EP06110073.1

申请日：2006-02-17

申请人： KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.

发明人： Genda, Daisuke, c/o Konica Minolta Business Tech.

IPC分类号： H04N1/32

CPC分类号： H04N1/00408 ,  H04N1/00411 ,  H04N1/00416 ,  H04N1/00482 ,  H04N2201/3215 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/3271 ,  H04N2201/3273 ,  H04N2201/3274

摘要： Disclosed is a user interface apparatus to be utilized in an image reading apparatus for forming image data by reading an original image. The user interface apparatus comprises: a setting section for setting a condition of reading the original image; and an instruction section for instructing start of reading the original image according to the condition of reading having been set by the setting section, wherein the setting section is provided with a selecting section for selecting whether to imprint a time stamp to the digital data formed by reading the original image.

摘要翻译： 公开了一种用于通过读取原始图像来形成图像数据的图像读取装置中使用的用户界面装置。 用户接口装置包括：设置部分，用于设置读取原始图像的条件; 以及指示部，其根据由所述设定部设定的读取条件指示开始读取原图像，其中，所述设定部设置有选择部，所述选择部用于选择是否将时间标记印制到由 阅读原始图像。

公开(公告)号：EP1726117A2

公开(公告)日：2006-11-29

申请号：EP05729199.9

申请日：2005-03-18

申请人： Digimarc Corporation

发明人： SHARMA, Ravi, K. ,  RAMOS, Daniel, O. ,  RODRIGUEZ, Tony, F. ,  LEVY, Kenneth, L.

IPC分类号： H04L9/00

CPC分类号： G06T1/0071 ,  G10L19/018 ,  H04L9/3236 ,  H04L9/3247 ,  H04L2209/34 ,  H04L2209/608 ,  H04N1/32144 ,  H04N1/32149 ,  H04N2201/3236 ,  H04N2201/3281 ,  H04N2201/3284

摘要： The present invention provides a method of securing messages steganographically embedded in media (e.g., printed or electronic objects, audio, and video). In one implementation, a message inclues a first portion and a second portion. The first portion includes a first message and a first checksum, which are encrypted with a private key. The encrypted first protion is combined with the second portion. The second portion includes a second message and a second checksum. The combined encrypted first portion and the second portion form a signature. The signature is encrypted wth a common key or universal key, perhaps after error correction coding. The private key is uniquely associated with an entity such as a document issuing jurisdiction.

公开(公告)号：EP1670236A2

公开(公告)日：2006-06-14

申请号：EP05023441.8

申请日：2005-10-26

申请人： HITACHI, LTD.

发明人： Itoh, Shinji ,  Honda, Yoshinori ,  Tanigawa, Yoshinobu ,  Sakai, Mizuhiro

IPC分类号： H04N1/32

CPC分类号： H04N1/00331 ,  H04N1/00326 ,  H04N1/32101 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/3274

摘要： A character recognition process is executed for image data written with text information, and a digital signature is given to the character recognition results and image data. The digital signature is given to data coupling both digest values of the character recognition results and image data. The digital signature is verified, a character recognition process is executed for the image data, and further a digest value of the character recognition results is calculated and compared with the digest value of the stored character recognition results. The location where both the digest values are incoincident is identified as an alteration position.

摘要翻译： 对用文本信息写入的图像数据执行字符识别处理，并且将数字签名给予字符识别结果和图像数据。 数字签名被赋予耦合字符识别结果和图像数据的摘要值的数据。 验证数字签名，对图像数据执行字符识别处理，并且进一步计算字符识别结果的摘要值并将其与所存储的字符识别结果的摘要值进行比较。 两个摘要值不一致的位置被识别为改变位置。

公开(公告)号：EP1081936B1

公开(公告)日：2006-04-26

申请号：EP00307690.8

申请日：2000-09-06

申请人： SEIKO EPSON CORPORATION

发明人： Nakajima, Yasumasa ,  Mogami, Kazuto

IPC分类号： H04N1/32

CPC分类号： G06T1/0021 ,  H04N1/32154 ,  H04N1/32165 ,  H04N1/32277 ,  H04N2101/00 ,  H04N2201/3236 ,  H04N2201/327 ,  H04N2201/3281

公开(公告)号：EP1518411A1

公开(公告)日：2005-03-30

申请号：EP03732924.0

申请日：2003-06-12

申请人： Koninklijke Philips Electronics N.V.

发明人： ROBERTS, David, K.

IPC分类号： H04N7/24

CPC分类号： H04N19/467 ,  G06Q20/342 ,  G07F7/025 ,  H04N1/32149 ,  H04N1/32192 ,  H04N1/32288 ,  H04N2201/3236

摘要： A method (2), an apparatus, a computer readable medium and use of said method for authenticating an audio-visual signal (10), such as a digital image or video, are disclosed. A signature is derived from all image regions, including areas with flat or otherwise un-watermarkable content. By combining signature bits from all regions of the audio-visual signal and spreading the signature bits over the whole audio-visual signal or at least a large area of it, preferably by applying a spread spectrum watermarking technique (2.40), the authenticity of flat regions is verified.

公开(公告)号：EP1518410A1

公开(公告)日：2005-03-30

申请号：EP03730428.4

申请日：2003-06-12

申请人： Koninklijke Philips Electronics N.V.

发明人： ROBERTS, David, K.

IPC分类号： H04N7/24 ,  H04N1/32

CPC分类号： H04N19/467 ,  G09C5/00 ,  H04N1/32144 ,  H04N2201/3236

摘要： A method, system and computer readable medium for the authenticating of an audio-visual signal, such as digital images or video comprising the generation of a robust image signature with variable size. In a preferred embodiment DC-values of blocks of a digital image are calculated and areas with similar DC-values are merged into regions. The signature is based on said regions and of variable length, depending on the desired localization ability or an allowable signature length. The resulting signature bits are robust to compression and other allowable image operations. The hierarchical solution provides both robustness and tampering localization.

公开(公告)号：EP1506507A1

公开(公告)日：2005-02-16

申请号：EP03727752.2

申请日：2003-05-20

申请人： Nokia Corporation

发明人： YAN, Zheng, Z. ,  LAHTEENMAKI, Mia ,  COFTA, Piotra

IPC分类号： G06F17/60 ,  H04Q7/22

CPC分类号： G07F17/42 ,  G06Q20/045 ,  G06Q20/10 ,  G06Q20/32 ,  G06Q20/322 ,  G06Q20/363 ,  G07B15/00 ,  G07F7/0866 ,  H04N1/00307 ,  H04N1/32133 ,  H04N1/32144 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/3278

摘要： A handheld device (100) is capable of communicating wirelessly with a ticket issuer (200) through a network (300) or by using a short-range link such as Bluetooth, IrDA, or the like. A ticket is purchased using a payment system (400). A user selects an image from a data store (120) and transmits it to the ticket issuer (200) along with data associated with the requested ticket. This data may comprise identification data of the user and/or the device (100), data concerning a requested validity of the ticket, data concerning the payment method and/or an optional reservation number. The ticket issuer (200) receives the request then transmits to the user a template, which the user then fills in before transmitting payment data, the completed template and the selected image from the user device (100) to the ticket issuer (200), as one or more SMS and/or MMS messages. If the data is verified as satisfactory, the ticket is then created by the ticket issuer (200) and visible and/or invisible watermarks are embedded into the image. The processed picture/image and the template are combined with additional data to generate a valid image digital ticket for the ticket user, which is then sent to the user or to an address or device which the user has given.

公开(公告)号：EP1491033A1

公开(公告)日：2004-12-29

申请号：EP03704889.9

申请日：2003-02-27

申请人： Koninklijke Philips Electronics N.V.

发明人： ROBERTS, David, K.

IPC分类号： H04N1/32 ,  H04L29/06 ,  G06T1/00

CPC分类号： H04L63/12 ,  G06F21/64 ,  G06T1/005 ,  H04N1/32144 ,  H04N7/16 ,  H04N21/44008 ,  H04N21/8358 ,  H04N2201/3233 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/3281

摘要： A method of protecting a digital object (111) against unauthorized tampering, comprising computing a digital signature over the contents of the digital object (111), creating a summary of the computed digital signature, and embedding the summary in the digital object (111). The authenticity of the thusly protected digital object (111) can be verified by extracting the embedded summary from the digital object (111), computing a digital signature over the contents of the digital object (111), creating a summary of the computed digital signature, and matching the extracted summary and the created summary, whereby the digital object (111) is verified as authentic if the matching is successful. Also devices and computer programs for implementing the protecting and verification methods.