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    Method of detecting digital watermark information
    2.
    发明授权
    Method of detecting digital watermark information 有权
    数字水印信息检测方法

    公开(公告)号：US07310428B2

    公开(公告)日：2007-12-18

    申请号：US10411217

    申请日：2003-04-11

    申请人： Kousuke Anzai ,  Isao Echizen ,  Hiroshi Yoshiura

    发明人： Kousuke Anzai ,  Isao Echizen ,  Hiroshi Yoshiura

    IPC分类号： G06K9/00

    CPC分类号： G06T1/005 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0065

    摘要： The present invention can detect watermark information from motion picture of various scanning methods and various picture sizes without causing increase of a memory capacity.A watermark information detection apparatus 1 converts encoded watermarked motion picture 4 into standard motion picture 5 having the smallest data size among the assumed kinds of motion picture. Further, the watermark information detection apparatus 1 scales a standard coordination system that is utilized for specifying embedding locations of a watermark pattern. Then, with respect to each field of the standard motion picture 5, watermark information is detected from predetermined locations specified in the scaled standard coordinate system by the watermark pattern.

    摘要翻译： 本发明可以检测来自各种扫描方式的运动图像和各种图像尺寸的水印信息，而不会增加存储器容量。 水印信息检测装置1将经编码的水印运动图像4转换成具有最小数据大小的标准运动图像5。 此外，水印信息检测装置1缩放用于指定水印图案的嵌入位置的标准协调系统。 然后，对于标准运动图像5的每个场，通过水印图案从缩放的标准坐标系中指定的预定位置检测水印信息。

    Method and apparatus for using contents
    3.
    发明授权
    Method and apparatus for using contents 有权
    使用内容的方法和装置

    公开(公告)号：US07293294B2

    公开(公告)日：2007-11-06

    申请号：US10620206

    申请日：2003-07-15

    申请人： Hiromi Ukai ,  Shigeki Hirasawa ,  Kousuke Anzai ,  Isao Echizen ,  Hiroshi Yoshiura ,  Masataka Okayama ,  Shuichi Tago

    发明人： Hiromi Ukai ,  Shigeki Hirasawa ,  Kousuke Anzai ,  Isao Echizen ,  Hiroshi Yoshiura ,  Masataka Okayama ,  Shuichi Tago

    IPC分类号： H04L29/00 ,  H04L9/00

    CPC分类号： G06F21/10 ,  G06F2221/0737

    摘要： A method for using digital contents is provided. In the method, a request is made to a provider apparatus for a certificate containing a first provider ID embedded therein by a certification authority, and the certificate is received from the provider apparatus. A decision is made by using the certificate as to whether or not the provider is authorized by the certification authority. A request is made to the provider apparatus for a digital content having a second provider ID embedded therein by a contents guarantee authority when the provider is authorized by the certification authority, and the digital content is received from the provider. The first provider ID is read from the certificate, the digital content is correlated with the second provider ID, and the digital content is stored in a storage medium. The second provider ID is detected from the digital content in response to a request to use the digital content. The first provider ID is compared with the second provider ID when the second provider ID is detected. The digital content is used when the first provider ID and the second provider ID match. The use of the digital content is restricted when the first provider ID and the second provider ID do no match.

    摘要翻译： 提供了一种使用数字内容的方法。 在该方法中，向提供者装置请求包含由认证机构嵌入其中的第一供应商ID的证书，并且从提供者设备接收证书。 通过使用证书确定提供者是否由认证机构授权进行决定。 当提供者被认证机构授权时，由内容保证机构向其提供具有第二供应商ID的数字内容的请求，并从提供商接收数字内容。 从证书中读取第一提供商ID，数字内容与第二提供商ID相关联，数字内容被存储在存储介质中。 响应于使用数字内容的请求，从数字内容检测第二提供商ID。 当检测到第二提供商ID时，将第一供应商ID与第二供应商ID进行比较。 当第一供应商ID和第二供应商ID匹配时，使用数字内容。 当第一供应商ID和第二供应商ID不匹配时，数字内容的使用受到限制。

    Method of extracting digital watermark information and method of judging bit value of digital watermark information
    4.
    发明授权
    Method of extracting digital watermark information and method of judging bit value of digital watermark information 失效
    提取数字水印信息的方法和判断数字水印信息比特值的方法

    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。

    Method of extracting digital watermark information and method of judging but value of digital watermark information
    6.
    发明授权
    Method of extracting digital watermark information and method of judging but value of digital watermark information 有权
    提取数字水印信息的方法及数字水印信息判断方法

    公开(公告)号：US06456727B1

    公开(公告)日：2002-09-24

    申请号：US09523523

    申请日：2000-03-10

    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.

    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。

    Method for embedding information and extracting the same
    8.
    发明授权
    Method for embedding information and extracting the same 失效
    嵌入信息和提取信息的方法

    公开(公告)号：US07065226B1

    公开(公告)日：2006-06-20

    申请号：US09583952

    申请日：2000-05-31

    申请人： Kousuke Anzai ,  Isao Echizen ,  Hiroshi Yoshiura ,  Shinobu Eikawa

    发明人： Kousuke Anzai ,  Isao Echizen ,  Hiroshi Yoshiura ,  Shinobu Eikawa

    IPC分类号： G06K9/00 ,  G06K9/36

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

    摘要： A method of embedding digital watermark information b1–bn (2≦n) in image data. The image data is divided into a plurality of areas S each consisting of M×N (1≦M, N) pixels. A plurality of areas G each consisting of P×Q (1≦P, Q) of the areas S are defined. Each of the areas S constituting each area G is allocated to some one of: areas T1–Tn in which said digital watermark information b1–bn is respectively embedded and areas H1–Hm (1≦m) in which information is not embedded. One or more areas T and one or more areas H are located in a predetermined arrangement in each area G. And, the plurality of areas G are located in a predetermined rule.

    摘要翻译： 一种在图像数据中嵌入数字水印信息b 1-b N n（2 n = n）的方法。 图像数据被划分为由M×N（1≤M，N）个像素组成的多个区域S。 定义由区域S的PxQ（1 <= P，Q）组成的多个区域G. 构成每个区域G的区域S中的每一个被分配到以下中的一个：其中所述数字水印信息b 1 / SUB的区域T 1 分别嵌入其中不嵌入信息的区域H 1 -I H m（1 = m）。 一个或多个区域T和一个或多个区域H位于每个区域G中的预定布置中。并且，多个区域G位于预定规则中。

    Method of extracting digital watermark information and method of judging bit value of digital watermark information
    9.
    发明授权
    Method of extracting digital watermark information and method of judging bit value of digital watermark information 有权
    提取数字水印信息的方法和判断数字水印信息比特值的方法

    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。

    Method of authenticating digital-watermark pictures
    10.
    发明授权
    Method of authenticating digital-watermark pictures 有权
    认证数字水印图片的方法

    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。