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公开(公告)号：JP4343968B2
公开(公告)日：2009-10-14
申请号：JP2007063478
申请日：2007-03-13
Applicant: キヤノン株式会社
Inventor： 朱里 松村
CPC classification number: H04N1/00846 , H04N1/00854 , H04N1/00875 , H04N1/32293 , H04N1/32304 , H04N1/4413 , H04N1/444 , H04N2201/3226 , H04N2201/327
Abstract: The present invention provides an image processor (3001) capable of preventing illegal copying of a document. An information extracting unit (6032) first extracts information from a barcode in a first region of document image data. Then, the information extracting unit (6032) extracts information from a barcode in a second region of the document image data if the information is extracted from the barcode in the first region. On the other hand, if the information is not extracted from the barcode in the first region, the information extracting unit (6032) does not extract the information from the barcode in the second region of the document image data. This enables a copying operation for a document consisting of a plurality of pages to be efficiently controlled.
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公开(公告)号：JP3596590B2
公开(公告)日：2004-12-02
申请号：JP32791198
申请日：1998-11-18
Applicant: ソニー株式会社
IPC: H04N19/60 , G06F21/10 , G06T1/00 , G09C5/00 , H03M7/00 , H04N1/32 , H04N1/387 , H04N1/40 , H04N7/08 , H04N7/081 , H04N19/423 , H04N19/467 , H04N19/48 , H04N19/625 , H04N19/70 , H04N7/30
CPC classification number: G06T1/0071 , G06T2201/0051 , G06T2201/0052 , G06T2201/0061 , H04N1/32203 , H04N1/32208 , H04N1/32293 , H04N2201/3233 , H04N2201/327
Abstract: The invention relates to an associated information adding apparatus and method for adding information associated with image data as an electronic watermark to the image data, and an associated information detecting apparatus and method for detecting the associated information. Particularly, the apparatus includes a memory for storing a unit watermark, a unit watermark repeating section for repeatedly reading the unit watermark from the memory by using a surplus obtained by dividing a pixel position coordinate value of a pixel in a vertical direction and a horizontal direction of an image by a size of a vertical and horizontal repetitive unit of the unit watermark, and an adding section for adding the unit watermark read out from the unit watermark repeating section to information of the image so that the unit watermark is repeated vertically and horizontally on the image. By this, since it is sufficient if the memory stores only the unit watermark, there is an effect that the memory to be used may be small.
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3.发明专利
公开(公告)号：JP2004520751A
公开(公告)日：2004-07-08
申请号：JP2002584626
申请日：2002-04-13
Applicant: マークエニー・インコーポレイテッドMarkany Inc.
CPC classification number: H04N19/467 , G06T1/005 , G06T2201/0065 , H04N1/32203 , H04N1/32208 , H04N1/32293 , H04N1/32309 , H04N1/32352 , H04N2201/3233 , H04N2201/327 , H04N2201/328
Abstract: 電子透かしは空間領域に埋め込まれる。 しかし、周波数領域に電子透かしが埋め込まれるのと同一の効果が逆周波数を電子透かしに変換してこれを埋め込む方法により得られる。 これにより、従来の、電子透かしを生成してこれを空間領域に加える方法に比して、電子透かしの強靭性が得られる。 また、イメージがスターマークを通過しても、リサンプリングを介した逆周波数変換により生成された電子透かしのサイズを大きくすることによって電子透かしが検出され得る。
電子透かしを検出する際に、電子透かしが埋め込まれたイメージの高周波フィルタリングと電子透かしが埋め込まれたイメージの全てのブロックを共に得ることにより、イメージ要素を除去する効果が得られる。 従って、電子透かしの検出速度が向上すると共に、検出率も増加する。-
公开(公告)号：JP4337819B2
公开(公告)日：2009-09-30
申请号：JP2005506463
申请日：2004-05-19
Applicant: 沖電気工業株式会社
Inventor： 蔵人 前野
CPC classification number: H04N1/32203 , H04N1/00838 , H04N1/32224 , H04N1/32261 , H04N1/32293
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公开(公告)号：JP4227048B2
公开(公告)日：2009-02-18
申请号：JP2004075020
申请日：2004-03-16
Applicant: 株式会社東芝
CPC classification number: H04N1/32203 , G06T1/0028 , G06T2201/0051 , G06T2201/0083 , H04N1/32208 , H04N1/32251 , H04N1/32293 , H04N1/32309
Abstract: A recording unit (106) records a composite image information generated by embedding invisible security information in visible human facial image on a recording medium (M). An extraction unit (112) extracts a spatial frequency component unique to key information from the recorded composite image information. A reconstructing unit (113) reconstructs the security information from extracted spatial frequency component. Independent claims are also included for the following: (1) image processing apparatus; and (2) image processing method.
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Patent Agency Ranking6.发明专利Electronic watermark embedment apparatus and electronic watermark detection apparatus 有权电子水印嵌入式设备和电子水印检测装置
公开(公告)号：JP2008085920A
公开(公告)日：2008-04-10
申请号：JP2006266015
申请日：2006-09-28
Applicant: Fujitsu Ltd , 富士通株式会社
Inventor： TAKAHASHI JUN , KURAKI KENSUKE , ANAMI TAIZO
CPC classification number: H04N1/32203 , G06T1/005 , G06T2201/0051 , G06T2201/0062 , G06T2201/0065 , H04N1/32208 , H04N1/32235 , H04N1/32288 , H04N1/32293 , H04N1/32304 , H04N1/3232
Abstract: PROBLEM TO BE SOLVED: To embed information in image data and to stably detect the information from a printed matter of the image data, so that the embedded information is hard to be visually discriminated and can be detected even when working such as copying or cutting is performed after printing.
SOLUTION: A detection means 101 detects a figure pattern area in which a figure pattern 113 representing information 112 to be embedded or the position of an area wherein the information 112 to be embedded exists from an area other than the background of image data 111. An embedding means 102 embeds the figure pattern 113 in the detected figure pattern area to generate data 114 embedded with a watermark.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：为了将信息嵌入图像数据中并且稳定地检测来自图像数据的打印物的信息，使得嵌入的信息难以被视觉辨别，并且即使在诸如复印的工作时也能被检测 或在打印后进行切割。 解决方案：检测装置101检测图形图形区域，其中表示待嵌入的信息112的图形图案113或其中存在要存储的信息112的区域的位置存在于除了图像数据的背景之外的区域 嵌入装置102将图形图案113嵌入检测到的图形图形区域中，以生成嵌入水印的数据114。 版权所有（C）2008，JPO＆INPIT
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7.发明专利Method, apparatus, and computer-readable medium for encoding message into document containing known information, method for adaptively selecting coding mark superimposed on document, and method for determining whether or not coding mark is superimposed on document 审中-公开用于将消息编码到包含已知信息的文档中的方法，装置和计算机可读介质，用于适应性地选择在文档上重新编码的标记的方法，以及用于确定无论是否将文档标记重新编码的方法
公开(公告)号：JP2007082228A
公开(公告)日：2007-03-29
申请号：JP2006247365
申请日：2006-09-12
Inventor： CHARLES PATRICK MEANEY
CPC classification number: H04N1/32251 , G06T1/0028 , G06T2201/0051 , H04N1/32208 , H04N1/32229 , H04N1/32293 , H04N1/32309 , H04N1/3232 , H04N1/32336 , H04N1/32352
Abstract: PROBLEM TO BE SOLVED: To provide a method for encoding a message into a document containing known information. SOLUTION: The method comprises identifying a plurality of logical information content categories associated with the known information (1502); establishing a priority order in which the message is to be added to each of the categories (1503); determining the amount of the message to be added to each of the categories (1504); and encoding the message with respect to the document in accordance with the established priority order and the determined amount (1506). COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：提供一种将消息编码成包含已知信息的文档的方法。 解决方案：该方法包括识别与已知信息相关联的多个逻辑信息内容类别（1502）; 建立将消息添加到每个类别的优先顺序（1503）; 确定要添加到每个类别的消息的量（1504）; 以及根据建立的优先级顺序和所确定的量（1506）对所述文档进行编码。 版权所有（C）2007，JPO＆INPIT
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公开(公告)号：JPWO2004107734A1
公开(公告)日：2006-07-20
申请号：JP2005506463
申请日：2004-05-19
Applicant: 沖電気工業株式会社
CPC classification number: H04N1/32203 , H04N1/00838 , H04N1/32224 , H04N1/32261 , H04N1/32293
Abstract: 様々な情報を文書に同時に複数埋め込むことの可能な透かし情報埋め込み装置を提供する。パターンテーブル19において,秘密情報を構成する各シンボルに対して,(1)文書のコピー時に残る残存ドットパターンと,(2)コピー時に消去される消去ドットパターンの両方を割り当て,これらをパターンテーブルにおいて多元マトリックスで分類管理している。そして,残存ドットパターンと消去ドットパターンのいずれを配置するかを決定するためのコピー牽制情報を基に透かし画像を形成する。このようにして,コピー牽制情報と秘密情報とを文書に同時に埋め込むことができ,秘密情報が埋め込まれた文書のコピーを牽制することが可能である。
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9.发明专利Watermark information embedding apparatus and method, watermark information detecting apparatus and method, and printed matter 审中-公开水印信息嵌入装置和方法，水印信息检测装置和方法及印刷物
公开(公告)号：JP2005150815A
公开(公告)日：2005-06-09
申请号：JP2003381142
申请日：2003-11-11
Applicant: Oki Electric Ind Co Ltd , 沖電気工業株式会社
Inventor： MAENO KURATO
CPC classification number: G06T1/005 , G06T2201/0051 , G06T2201/0065 , H04N1/32203 , H04N1/32208 , H04N1/32261 , H04N1/32293
Abstract: PROBLEM TO BE SOLVED: To provide a watermark information embedding apparatus capable of remarkably enhancing the information recording density by expressing information with simple lines and points. SOLUTION: The watermark information embedding apparatus for embedding information to an image by electronic watermark technology includes: a coding section 11 for coding embedding information to be embedded to the image; a pattern assignment section 12 for assigning a pattern to each symbol of the coded embedding information; and a watermark embedded image composite section 13 for regularly arranging the pattern corresponding to the embedding information to the image, and it is characterized in that one or two or more patterns having a prescribed spatial period are assigned to each symbol. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 解决的问题：提供能够通过用简单的线和点表达信息来显着增强信息记录密度的水印信息嵌入装置。 解决方案：用于通过电子水印技术将信息嵌入到图像中的水印信息嵌入装置包括：编码部分11，用于编码嵌入到图像中的信息; 模式分配部分12，用于向编码的嵌入信息的每个符号分配模式; 以及用于将与嵌入信息相对应的图案规则地排列到图像的水印嵌入图像复合部分13，其特征在于，将具有规定空间周期的一个或两个以上图案分配给每个符号。 版权所有（C）2005，JPO＆NCIPI
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10.发明专利
公开(公告)号：JP4977103B2
公开(公告)日：2012-07-18
申请号：JP2008227018
申请日：2008-09-04
Applicant: コニカ ミノルタ ラボラトリー ユー.エス.エー.,インコーポレイテッド
Inventor： マリア クアン チャオ， , イ メイ，
IPC: H04N1/387
CPC classification number: H04N1/32208 , G06K9/6202 , G06T1/0042 , G06T1/0078 , G06T2201/0051 , G06T2201/0061 , G06T2201/0083 , H04N1/32203 , H04N1/32293 , H04N1/32325 , H04N2201/3233 , H04N2201/3235 , H04N2201/3269 , H04N2201/3271
Abstract: A document authentication method uses a watermark added in a printed document to detection possible alterations made to the document after it was printed. First, a visible watermark in the form of a dot pattern is overlapped with an original digital image. The watermarked image is printed out as a halftone image at a first resolution. The watermark in the printed document appears as a light gray shade. Later, the printed document is scanned back using a grayscale scan at a resolution higher than the first resolution. In the scanned image, altered areas would appear flat (lacking intensity variation) whereas unaltered areas will have relatively large density variations due to the watermark dots and the fact that the image was halftone printed at a lower resolution. Alternations are detected by identifying flat areas within the image using a combination of flat block detection and a multiple thresholds method.
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