公开(公告)号：US06658135B1

公开(公告)日：2003-12-02

申请号：US09432796

申请日：1999-11-03

申请人： Hajime Morito ,  Naoko Iwami ,  Hiroshi Yoshiura ,  Chisato Konno ,  Yutaka Kurosu

发明人： Hajime Morito ,  Naoko Iwami ,  Hiroshi Yoshiura ,  Chisato Konno ,  Yutaka Kurosu

IPC分类号： G06K900

CPC分类号： H04N1/32277 ,  G06T1/0021 ,  H04N1/32144 ,  H04N2101/00 ,  H04N2201/3233 ,  H04N2201/327 ,  H04N2201/328

摘要： A recording device which is capable of preventing alteration of a generated digital picture data and suitable for improving the reliability of the digital picture data as an evidence. The recording device includes a related information embedding unit for embedding a related information on the digital picture data stored in a related information storing unit in the digital picture data obtained by a picture receiving unit by means of the digital watermarking technique, a digital signature generating unit for generating a digital signature of the digital picture data in which the related information has been embedded, and a recording unit for adding the digital signature to the digital picture data in which the related information has been embedded and storing it in a memory unit.

摘要翻译： 一种记录装置，其能够防止所生成的数字图像数据的改变，并且适于提高数字图像数据的可靠性作为证据。 记录装置包括：相关信息嵌入单元，用于将存储在相关信息存储单元中的数字图像数据的相关信息嵌入由图像接收单元通过数字水印技术获得的数字图像数据;数字签名生成单元 用于生成其中嵌入了相关信息的数字图像数据的数字签名;以及记录单元，用于将数字签名添加到已经嵌入相关信息的数字图像数据并将其存储在存储单元中。

公开(公告)号：US06970575B2

公开(公告)日：2005-11-29

申请号：US10665020

申请日：2003-09-22

申请人： Isao Echizen ,  Hiroshi Yoshiura ,  Yutaka Kurosu ,  Kousuke Anzai

发明人： Isao Echizen ,  Hiroshi Yoshiura ,  Yutaka Kurosu ,  Kousuke Anzai

IPC分类号： G06T1/00 ,  G06K9/00

CPC分类号： G06T1/0064 ,  G06T1/0078 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0065

摘要： A digital watermark information is extracted from geometrically deformed image without using a calibrating digital watermark. Pixel data at positions predetermined in an X-Y coordinate used when embedding the watermark is extracted from image data in which the digital watermark has been embedded for given pixel data and compared with a reference value to determine whether the watermark has been embedded in the pixel data concerned or not. This processing is repeated until it is confirmed that the information is embedded in the pixel data concerned, while applying geometric deformation to the image data.

摘要翻译： 数字水印信息从几何变形图像中提取而不使用校准数字水印。 从嵌入了水印的数字水印图像数据中提取嵌入水印时所使用的XY坐标预定位置的像素数据，并与基准值进行比较，判断水印是否嵌入有关的像素数据 或不。 重复该处理，直到确认信息被嵌入相关的像素数据中，同时对图像数据应用几何变形。

公开(公告)号：US06959101B2

公开(公告)日：2005-10-25

申请号：US10733293

申请日：2003-12-12

申请人： Hiroshi Yoshiura ,  Kousuke Anzai ,  Yutaka Kurosu

发明人： Hiroshi Yoshiura ,  Kousuke Anzai ,  Yutaka Kurosu

IPC分类号： G06T1/00 ,  H04N1/32 ,  G06K9/00 ,  H04L9/00

CPC分类号： G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0202 ,  H04N1/00005 ,  H04N1/00037 ,  H04N1/32203 ,  H04N1/32208 ,  H04N21/8358 ,  H04N2201/3233 ,  H04N2201/327

摘要： A method and apparatus for embedding information into a target element in which information is to be embedded and a storage medium. The method and apparatus include obtaining plural sets of data values of a plurality of elements, wherein each set of data values is obtained along one direction extending through the target element, determining a strength of embedding information into the target element based on the plural sets of data values obtained, and embedding information into the target element based on the strength determined. The storage medium stores a program which enables embedding information by execution by a computer.

摘要翻译： 一种用于将信息嵌入到要嵌入信息的目标元素和存储介质中的方法和装置。 该方法和装置包括获得多个元素的多组数据值，其中每个数据值集合沿着穿过目标元素的一个方向被获得，基于多组数据值确定将信息嵌入到目标元素中的强度 获得的数据值，以及基于确定的强度将信息嵌入到目标元素中。 存储介质存储通过计算机执行嵌入信息的程序。

公开(公告)号：US06665417B1

公开(公告)日：2003-12-16

申请号：US09452467

申请日：1999-12-02

申请人： Hiroshi Yoshiura ,  Kousuke Anzai ,  Yutaka Kurosu

发明人： Hiroshi Yoshiura ,  Kousuke Anzai ,  Yutaka Kurosu

IPC分类号： G06K900

CPC分类号： G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0202 ,  H04N1/00005 ,  H04N1/00037 ,  H04N1/32203 ,  H04N1/32208 ,  H04N21/8358 ,  H04N2201/3233 ,  H04N2201/327

摘要： A digital watermark information judging method is provided for detecting digital watermark information which is embedded in at least one element of digital data by altering at least one data value of the element. The method first estimates the data value of the element by using data values of at least two neighboring elements of data located near the element, then compares the estimated data value with an actual data value of the element to detect the amount of the alteration, and judges the presence and value of the digital watermark information based on the amount of the alteration.

摘要翻译： 提供一种数字水印信息判断方法，用于通过改变元素的至少一个数据值来检测嵌入在数字数据的至少一个元素中的数字水印信息。 该方法首先通过使用位于元素附近的数据的至少两个相邻元素的数据值来估计元素的数据值，然后将估计的数据值与该元素的实际数据值进行比较，以检测该变化的量，以及 基于改变量判断数字水印信息的存在和价值。

公开(公告)号：US06418232B1

公开(公告)日：2002-07-09

申请号：US09383199

申请日：1999-08-26

申请人： Kazunori Nakano ,  Juńichi Taguchi ,  Hiroshi Yoshiura ,  Isao Echizen ,  Yutaka Kurosu

发明人： Kazunori Nakano ,  Juńichi Taguchi ,  Hiroshi Yoshiura ,  Isao Echizen ,  Yutaka Kurosu

IPC分类号： G06K900

CPC分类号： G06T1/0064

摘要： An extraction process includes the steps of carrying out a geometric transformation on a picture being inspected to transform the size of the picture being inspected into a reduced scale of an original picture; creating a plurality of degraded original pictures with different types each obtained as a result of degradation of the original picture; creating a plurality of differential pictures by subtraction of the degraded original pictures with different types from the picture being inspected with a transformed size to cancel degradation components in the picture being inspected with a transformed size; and extracting the information corresponding to the authentication information.

摘要翻译： 提取处理包括对被检查的图像进行几何变换以将被检查的图像的大小变换为原始图像的缩小比例的步骤; 创建由于原始图像的劣化而获得的多个具有不同类型的退化原始图片; 通过用经变换的大小从被检查的图像中减去具有不同类型的劣化的原始图像来消除多个差分图像，以消除正在被检测的经过变换的大小的图像中的劣化分量; 并提取与认证信息相对应的信息。

公开(公告)号：US06865553B2

公开(公告)日：2005-03-08

申请号：US09968512

申请日：2001-10-02

申请人： Hajime Morito ,  Hiroshi Yoshiura ,  Michael Roe

发明人： Hajime Morito ,  Hiroshi Yoshiura ,  Michael Roe

IPC分类号： G06F12/14 ,  G06F11/00 ,  G06F21/24 ,  G06T1/00 ,  G11B20/00 ,  G11B20/10 ,  H04N1/387 ,  H04N5/76 ,  H04N5/913 ,  H04N7/26 ,  G06F17/60

CPC分类号： H04N21/8358 ,  G06T1/0021 ,  G06T2201/0064 ,  G11B20/00086 ,  G11B20/00768 ,  G11B20/00884 ,  H04N5/76 ,  H04N5/913 ,  H04N19/467 ,  H04N21/23892 ,  H04N2005/91328

摘要： An apparatus and method of copy protection for use in digital data recorders such as DVD-RAM recorders, which includes embedding transmission time information into a digital data stream by digital watermarking and comparing the transmission time with the current time at the data recorder (30, 50). If the time difference is less than a threshold value it is presumed that the recording is for time-shifting purposes, namely recording a programme to watch later, which is generally allowed by copyright laws. If the time difference is greater than a threshold value it is presumed that the recording is an attempted unauthorized recording such as from a pre-recorded copy, and further recording is prevented.

摘要翻译： 一种用于诸如DVD-RAM记录器的数字数据记录器中的复制保护的装置和方法，其包括通过数字水印将传输时间信息嵌入到数字数据流中，并将传输时间与数据记录器（30， 50）。 如果时间差小于阈值，则假设记录是用于时间偏移的目的，即记录稍后观看的节目，这通常是版权法允许的。 如果时间差大于阈值，则假设记录是来自预先记录的副本的尝试的未经授权的记录，并且防止进一步的记录。

公开(公告)号：US06310956B1

公开(公告)日：2001-10-30

申请号：US09254882

申请日：1999-03-16

申请人： Hajime Morito ,  Hiroshi Yoshiura ,  Michael Roe

发明人： Hajime Morito ,  Hiroshi Yoshiura ,  Michael Roe

IPC分类号： G06F1214

CPC分类号： H04N21/8358 ,  G06T1/0021 ,  G06T2201/0064 ,  G11B20/00086 ,  G11B20/00768 ,  G11B20/00884 ,  H04N5/76 ,  H04N5/913 ,  H04N19/467 ,  H04N21/23892 ,  H04N2005/91328

摘要： An apparatus and method of copy protection for use in digital data recorders such as DVD-RAM recorders, which includes embedding transmission time information into a digital data stream by digital watermarking and comparing the transmission time with the current time at the data recorder (30, 50). If the time difference is less than a threshold value it is presumed that the recording is for time-shifting purposes, namely recording a programme to watch later, which is generally allowed by copyright laws. If the time difference is greater than a threshold value it is presumed that the recording is an attempted unauthorised recording such as from a pre-recorded copy, and further recording is prevented.

摘要翻译： 一种用于诸如DVD-RAM记录器的数字数据记录器中的复制保护的装置和方法，其包括通过数字水印将传输时间信息嵌入到数字数据流中，并将传输时间与数据记录器（30， 50）。 如果时间差小于阈值，则假设记录是用于时间偏移的目的，即记录稍后观看的节目，这通常是版权法允许的。 如果时间差大于阈值，则假设记录是来自预先记录的副本的尝试的未经授权的记录，并且防止进一步的记录。

公开(公告)号：US06563935B1

公开(公告)日：2003-05-13

申请号：US09388447

申请日：1999-09-02

申请人： Isao Echizen ,  Hiroshi Yoshiura ,  Kousuke Anzai ,  Yutaka Kurosu

发明人： Isao Echizen ,  Hiroshi Yoshiura ,  Kousuke Anzai ,  Yutaka Kurosu

IPC分类号： G06K900

CPC分类号： G06T1/0078 ,  G06T1/0064 ,  G06T2201/0051

摘要： According to a digital watermark information extracting method, pixel data located at predetermined positions on X-Y coordinate used when digital watermark information is embedded are extracted from image data, and the data value of the pixel data is compared with a reference value to judge whether the watermark information is embedded in the pixel data concerned. This processing is repetitively executed while a geometrical deformation is applied to the image data until it is confirmed that the information is embedded in the pixel data.

摘要翻译： 根据数字水印信息提取方法，从图像数据中提取位于嵌入数字水印信息时使用的XY坐标上的预定位置处的像素数据，并将像素数据的数据值与参考值进行比较，以判断水印 信息被嵌入到相关的像素数据中。 当将几何变形应用于图像数据时重复执行该处理，直到确认信息被嵌入像素数据中为止。

公开(公告)号：US06707927B1

公开(公告)日：2004-03-16

申请号：US09542295

申请日：2000-04-04

申请人： Kazumasa Kita ,  Hiroshi Yoshiura ,  Yutaka Kurosu ,  Miki Tanaka ,  Shinobu Eikawa ,  Tomoyuki Kaji

发明人： Kazumasa Kita ,  Hiroshi Yoshiura ,  Yutaka Kurosu ,  Miki Tanaka ,  Shinobu Eikawa ,  Tomoyuki Kaji

IPC分类号： G06K900

CPC分类号： G06T1/0028 ,  G06T2201/0051

摘要： There is provided a steganographic system which can dispense with an original image during extraction of watermark by determining a position at which an optimum space dependent physical quantity is embedded as a watermark complying with an image such that the picture quality can be prevented from being deteriorated, embedding watermark information in the image, generating information such as watermark embedding position information and receiving a watermark embedded image and watermark embedded position information to extract watermark information.

摘要翻译： 提供了一种隐写系统，其可以通过确定嵌入最优空间相关物理量的位置作为符合图像的水印，从而可以防止图像质量恶化，从而在提取水印期间省去原始图像， 在图像中嵌入水印信息，生成诸如水印嵌入位置信息的信息，并接收水印嵌入图像和水印嵌入位置信息以提取水印信息。

公开(公告)号：US06650763B2

公开(公告)日：2003-11-18

申请号：US10252415

申请日：2002-09-24

申请人： Isao Echizen ,  Hiroshi Yoshiura ,  Yutaka Kurosu ,  Kousuke Anzai

发明人： Isao Echizen ,  Hiroshi Yoshiura ,  Yutaka Kurosu ,  Kousuke Anzai

IPC分类号： G06K900

CPC分类号： G06T1/0064 ,  G06T1/0078 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0065

摘要： A digital watermark information is extracted from geometrically deformed image without using a calibrating digital watermark. Pixel data at positions predetermined in an X-Y coordinate used when embedding the watermark is extracted from image data in which the digital watermark has been embedded for given pixel data and compared with a reference value to determine whether the watermark has been embedded in the pixel data concerned or not. This processing is repeated until it is confirmed that the information is embedded in the pixel data concerned, while applying geometric deformation to the image data.