专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07680296B2 Information embedding device and program for changing a number of points that exist on sides of a polygon 有权
标题翻译：信息嵌入装置和程序，用于改变存在于多边形侧面的多个点
公开(公告)号：US07680296B2
公开(公告)日：2010-03-16
申请号：US10558923
申请日：2004-08-18
申请人： Hisashi Inoue , Masataka Ejima , Kenichi Noridomi , Takashi Katsura , Shugo Horikami
发明人： Hisashi Inoue , Masataka Ejima , Kenichi Noridomi , Takashi Katsura , Shugo Horikami
IPC分类号： G06K9/00
CPC分类号： G06T1/0064 , G06T2201/0051
摘要： Information embedding is performed by extracting vertices constituting a polygon from vector data, and changing a number of points that exist on sides of the polygon based on embedment information. Further, information reading is performed by extracting points existing on the sides of the polygon from the embedment information and embedded vector data, and by reading the embedment information according to a predetermined rule.
摘要翻译：信息嵌入是通过从矢量数据中提取构成多边形的顶点，根据嵌入信息来改变存在于多边形的边的点数来进行的。此外，通过从嵌入信息和嵌入向量数据中提取存在于多边形的侧面上的点，并且根据预定规则读取嵌入信息来执行信息读取。

2. 发明授权

US06639997B1 Apparatus for and method of embedding and extracting digital information and medium having program for carrying out the method recorded thereon 失效
标题翻译：用于嵌入和提取数字信息的装置和方法以及具有用于执行记录在其上的方法的程序的介质
公开(公告)号：US06639997B1
公开(公告)日：2003-10-28
申请号：US09496661
申请日：2000-02-03
申请人： Takashi Katsura , Hisashi Inoue
发明人： Takashi Katsura , Hisashi Inoue
IPC分类号： G06K900
CPC分类号： H04N19/63 , G06T1/005 , G06T2201/0052 , H04N1/3217 , H04N1/32187 , H04N21/23892 , H04N21/8358
摘要： An object of the present invention is to provide a simple apparatus for and a simple method of embedding and extracting digital information with little clue to a third party as to embedded digital information with less effort, and the embedded information is securely reconstructed thereby. To embed digital information, a band division portion receives a digital image signal, and then divides the same into ten frequency band signals through discrete wavelet transform so as to compute wavelet coefficients. A mapping portion maps inherent digital information to a pseudo-random number string. An information embedding portion embeds the mapped pseudo-random number string in a string structured by every or some of the computed wavelet coefficients in MRR (signals exclusive of an LL3 signal). A band synthesis portion synthesizes the embedded LL3 digital image signal. To extract the digital information, the band division portion divides a digital image signal to which information has been embedded into a plurality of frequency bands, and then computes wavelet coefficients therein.
摘要翻译：本发明的目的是提供一种简单的装置和一种简单的方法，以较少的努力将嵌入数字信息以较少的线索嵌入和提取数字信息给第三方，并且嵌入的信息被安全地重建。嵌入数字信息，频带分割部分接收数字图像信号，然后通过离散小波变换将其分成十个频带信号，以便计算小波系数。映射部分将固有数字信息映射到伪随机数字串。信息嵌入部分将映射的伪随机数字串嵌入到由MRR中的每个或一些计算的小波系数构成的字符串（不包括LL3信号的信号）中。频带合成部分合成嵌入的LL3数字图像信号。为了提取数字信息，频带分割部将信息嵌入的数字图像信号分割为多个频带，然后计算其中的小波系数。

3. 发明授权

US4600862A Discharge lamp operation apparatus 失效
标题翻译：放电灯操作装置
公开(公告)号：US4600862A
公开(公告)日：1986-07-15
申请号：US658414
申请日：1984-10-05
申请人： Kazuhiko Ito , Takashi Katsura , Masataka Ozawa , Kazutaka Koyama , Yoshiro Ogata
发明人： Kazuhiko Ito , Takashi Katsura , Masataka Ozawa , Kazutaka Koyama , Yoshiro Ogata
IPC分类号： H01J61/12 , H01J61/82 , H01J17/20 , H01J11/04
CPC分类号： H01J61/12 , H01J61/825
摘要： A high-pressure sodium lamp is connected to a d.c. power supply through a ballast, to operate it with a current containing a d.c. component. The relation between the ratio l/d of the inter-electrode distance l (mm) to the inner diameter d (mm) of the arc tube of the high-pressure sodium lamp and the sodium vapor pressure P.sub.Na (kPa) in the arc tube is maintained at P.sub.Na .gtoreq.6.0 (l/d-5.8), thus making it possible to operate the high-pressure sodium lamp with a current containing a d.c. component without causing a significant color separation which otherwise might be the result of cataphoresis.
摘要翻译：高压钠灯连接到直流电源。通过镇流器供电，用含有直流电流的电流进行操作。零件。高压钠灯的电弧管的电极间距离l（mm）与内径d（mm）的比l / d与电弧管中的钠蒸气压PNa（kPa）之间的关系维持在PNa> / = 6.0（l / d-5.8），因此可以用含有直流电流的电流操作高压钠灯组分，而不会导致显着的颜色分离，否则可能是电泳的结果。

4. 发明授权

US07127614B2 Justification authenticating system, personal certificate issuing system, and personal certificate 有权
标题翻译：理由认证系统，个人证书颁发系统和个人证书
公开(公告)号：US07127614B2
公开(公告)日：2006-10-24
申请号：US09885736
申请日：2001-06-20
申请人： Yuichi Kawaguchi , Yuji Shimizu , Shinichi Tsumori , Takashi Katsura , Hisashi Inoue
发明人： Yuichi Kawaguchi , Yuji Shimizu , Shinichi Tsumori , Takashi Katsura , Hisashi Inoue
IPC分类号： H04L9/00
CPC分类号： H04N1/32144 , G06T1/0021 , G07C9/00079 , G07F7/08 , G07F7/122 , H04N2201/3226 , H04N2201/3235 , H04N2201/327
摘要： A justification/authentication personal certificate system stores in a remote database a counterpart of an identifier and a digital watermark contained in the personal certificate. The personal certificate includes the digital watermark embedded in an authentic image such as a facial photograph, a retinal scan, or a fingerprint. When the personal certificate is used, the authentic image is read from the personal certificate, and the digital watermark information is extracted. The digital watermark information and the identifier are compared with the counterparts stored in the database. If the extracted digital watermark information is identical to the information in the database, then the personal certificate is judged to be unjustifiable. In one embodiment, at least one of the identifier and digital watermark are changed each time the system justifies the personal certificate.
摘要翻译：验证/认证个人证书系统在远程数据库中存储个人证书中包含的标识符和数字水印的对应物。个人证书包括嵌入在诸如面部照片，视网膜扫描或指纹之类的真实图像中的数字水印。当使用个人证书时，从个人证书读取真实图像，并且提取数字水印信息。将数字水印信息和标识符与存储在数据库中的对应物进行比较。如果提取的数字水印信息与数据库中的信息相同，则认定个人证书是不合理的。在一个实施例中，每当系统证明个人证书时，标识符和数字水印中的至少一个被改变。

5. 发明授权

US06728409B2 Apparatus for and method of embedding and extracting digital information and medium having program for carrying out the method recorded thereon 失效
标题翻译：用于嵌入和提取数字信息的装置和方法以及具有用于执行记录在其上的方法的程序的介质
公开(公告)号：US06728409B2
公开(公告)日：2004-04-27
申请号：US10243676
申请日：2002-09-16
申请人： Hisashi Inoue , Takashi Katsura
发明人： Hisashi Inoue , Takashi Katsura
IPC分类号： G06K946
CPC分类号： H04N19/645 , G06T1/005 , G06T2201/0051 , G06T2201/0052 , G06T2201/0061 , G06T2201/0065 , H04N1/32154 , H04N1/3216 , H04N1/32165 , H04N1/3217 , H04N1/32176 , H04N1/32187 , H04N1/32277 , H04N2201/3233 , H04N2201/327
摘要： An apparatus for embedding information in a signal includes a band dividing device, a block divider, a quantization portion, a signal replacement portion, a mean difference addition portion, a mean calculation portion, and a band synthesis portion. The band dividing device divides the signal into transform coefficients over a plurality of frequency bands. The block divider divides one frequency band into a plurality of blocks in accordance with a previously determined block size. The quantization portion calculates for each block, a mean value M of the transform coefficients in the block, and subjects the mean value M to linear quantization, using a previously determined quantization step-size Q to calculate a quantization value. The signal replacement portion replaces the quantization value for each block, on the basis of the quantization value and the value of the information to be embedded. The mean difference addition portion subjects the replaced quantization value, for each block, to inverse linear quantization using the quantization step-size Q to calculate a mean value M′, and adds a difference DM between the mean value M′ and the mean value M to all the transform coefficients in the block. The mean calculation portion calculates a mean value LM of the transform coefficients in the frequency band after the addition of the difference DM. The band synthesis portion reconstructs a signal in which the information has been embedded using the frequency band after the addition of the difference DM and the other frequency bands.
摘要翻译：用于在信号中嵌入信息的装置包括带分割装置，块分割器，量化部分，信号替换部分，平均差加法部分，平均计算部分和频带合成部分。频带划分装置将信号划分成多个频带的变换系数。块分割器根据先前确定的块大小将一个频带划分成多个块。量化部分针对每个块计算块中的变换系数的平均值M，并使用预先确定的量化步长Q对平均值M进行线性量化，以计算量化值。信号替换部分基于量化值和要嵌入的信息的值替换每个块的量化值。平均差分加法部分使用量化步长Q对每个块对替换的量化值进行逆线性量化，以计算平均值M'，并将平均值M'和平均值M 到块中的所有变换系数。平均计算部分计算差DM之后的频带中的变换系数的平均值LM。频带合成部分在添加差分DM和其他频带之后，使用频带重建信息已被嵌入的信号。

6. 发明授权

US06693965B1 Apparatus for and method of embedding and extracting digital information, and medium having program for carrying out the method recorded thereon 失效
标题翻译：用于嵌入和提取数字信息的装置和方法，以及具有用于执行记录在其上的方法的程序的介质
公开(公告)号：US06693965B1
公开(公告)日：2004-02-17
申请号：US09489312
申请日：2000-01-21
申请人： Hisashi Inoue , Takashi Katsura
发明人： Hisashi Inoue , Takashi Katsura
IPC分类号： H04N712
CPC分类号： G06T1/005 , G06T2201/0052 , G06T2201/0065 , H04N1/3217 , H04N1/32187 , H04N2201/3233 , H04N2201/327
摘要： A digital information embedding apparatus comprises a band divider, a block divider, a key generator, an information embedder and a band synthesizer. The band divider divides the digital image signal into a plurality of frequency bands to obtain wavelet coefficients. The block divider divides the frequency band in which the digital information is to be embedded into a plurality of blocks in a predetermined block size. The key generator respectively generates secondary keys having different values from a key having a predetermined value using a predetermined function. The information embedder specifies the block in the embedding object region based on each of the generated secondary keys, and respectively embeds the corresponding information composing the digital information in the wavelet coefficients in the specified block in the embedding object region. The band synthesizer reconstructs a digital image signal.
摘要翻译：数字信息嵌入装置包括一个分频器，一个分频器，一个键发生器，一个信息嵌入器和一个频带合成器。频带分频器将数字图像信号分成多个频带，以获得小波系数。块分割器以预定的块大小将要嵌入数字信息的频带划分成多个块。密钥发生器使用预定的功能分别产生具有与具有预定值的密钥不同的值的辅助密钥。信息嵌入器基于每个生成的辅助键来指定嵌入对象区域中的块，并且将嵌入对象区域中的指定块中的小波系数中的构成数字信息的对应信息分别嵌入。频带合成器重构数字图像信号。

7. 发明授权

US07356700B2 Digital watermark-embedding apparatus and method, digital watermark-detecting apparatus and method, and recording medium 失效
标题翻译：数字水印嵌入装置和方法，数字水印检测装置和方法以及记录介质
公开(公告)号：US07356700B2
公开(公告)日：2008-04-08
申请号：US10654492
申请日：2003-09-04
申请人： Kenichi Noridomi , Hisashi Inoue , Takashi Katsura , Masataka Ejima
发明人： Kenichi Noridomi , Hisashi Inoue , Takashi Katsura , Masataka Ejima
IPC分类号： H04L9/00 , G06K9/46
CPC分类号： G06T1/0028 , G06T2201/0051 , G06T2201/0052 , G06T2201/0061
摘要： A digital image signal is divided into blocks. Each of the divided blocks is subjected to orthogonal transformation. As a result, the divided blocks are transformed into several frequency components. One or more frequency components are selected in accordance with a characteristic amount that is extracted from the several frequency components. Values of the selected frequency components are operated under a predetermined rule in accordance with an embedment signal that is generated from embedment information.
摘要翻译：数字图像信号被分成块。对每个分割块进行正交变换。结果，分割的块被转换成多个频率分量。根据从多个频率分量中提取的特征量来选择一个或多个频率分量。所选择的频率分量的值根据从嵌入信息产生的嵌入信号在预定规则下操作。

8. 发明授权

US07003666B1 Apparatus and method for embedding information for tamper detection and detecting tamper and recording medium having program for carrying out the method recorded thereon 有权
标题翻译：用于嵌入用于篡改检测和检测篡改的信息的装置和方法，以及具有用于执行其上记录的方法的程序的记录介质
公开(公告)号：US07003666B1
公开(公告)日：2006-02-21
申请号：US09716221
申请日：2000-11-21
申请人： Hisashi Inoue , Takashi Katsura
发明人： Hisashi Inoue , Takashi Katsura
IPC分类号： H04L9/00 , H04L9/32
CPC分类号： G06T1/005 , G06T2201/0052 , G06T2201/0065
摘要： An object of the present invention is to provide an information embedding/tamper detecting apparatus and method capable of distinguishing between changes caused by image processing and intentional image tampering, and further capable of localizing, on a regional basis, a tampered position on an image. A tamper-detection-information embedding apparatus 1 divides the image into a plurality of frequency bands to obtain transform coefficients, and then generates a pseudo-random number series by using key data, and further generates authentication data. The key data and the authentication data are embedded in the transform coefficients of MRA and MRR, respectively. the image in which the information is embedded is reconstructed by using MRA and MRR. A tamper-detecting apparatus 2 extracts the key data from MRA obtained by dividing the image into frequency bands and generates the authentication data assumed to have been embedded, and further extracts the embedded information from MRR. The image is divided in to a plurality of blocks composed of a predetermined number of pixels. For each block, an information series embedded in the transform coefficients of MRR representing the same spatial region as the unit block is compared, for verification, with the corresponding authentication data series so that the tamper is determined on a regional basis.
摘要翻译：本发明的目的是提供一种能够区分由图像处理和有意图像篡改引起的变化的信息嵌入/篡改检测装置和方法，并且还能够在区域上本地化图像上的被篡改的位置。篡改检测信息嵌入装置1将图像划分为多个频带以获得变换系数，然后通过使用密钥数据生成伪随机数序列，并进一步生成认证数据。密钥数据和认证数据分别嵌入在MRA和MRR的变换系数中。通过使用MRA和MRR重建其中嵌入信息的图像。篡改检测装置2从通过将图像划分成频带而获得的MRA提取密钥数据，并生成假定已被嵌入的认证数据，并且进一步从MRR中提取嵌入信息。图像被划分为由预定数量的像素组成的多个块。对于每个块，将表示与单位块相同的空间区域的MRR的变换系数中嵌入的信息序列与相应的认证数据序列进行比较，以便在区域的基础上确定篡改。

9. 发明授权

US06898297B2 Digital watermark embedding method, digital watermark extracting method, recording medium, image recording device, and image replaying device 失效
标题翻译：数字水印嵌入方法，数字水印提取方法，记录介质，图像记录装置和图像重放装置
公开(公告)号：US06898297B2
公开(公告)日：2005-05-24
申请号：US09885730
申请日：2001-06-20
申请人： Takashi Katsura , Hisashi Inoue , Koji Sugishita
发明人： Takashi Katsura , Hisashi Inoue , Koji Sugishita
IPC分类号： G06T1/00 , G09C5/00 , G11B20/00 , H04N1/387 , H04N5/92 , H04N7/08 , H04N7/081 , G06K9/00
CPC分类号： G06T1/005 , G11B20/00086 , G11B20/00884
摘要： Embedding data to be embedded as a digital watermark is acquired. Packing data is formed in which the embedding data is repeatedly connected three times or more sequentially without interval. Real embedding information is formed such that a redundancy bit with a fixed length that is used for an error correction of an information bit is added immediately after the information bit in which the packing data is subdivided into data each having a fixed length. The real embedding information is embedded into the image data itself. The embedding mechanism for the information is not easily understood, and security level is high.
摘要翻译：嵌入作为数字水印嵌入的数据被获取。形成包装数据，其中嵌入数据在不间隔的情况下重复连接三次或更多次。形成实际嵌入信息，使得在将打包数据细分为具有固定长度的数据的信息位之后立即添加用于信息位的纠错的固定长度的冗余位。真正的嵌入信息被嵌入到图像数据本身中。信息的嵌入机制不容易理解，安全级别很高。

10. 发明授权

US07315621B2 Digital watermark-embedding apparatus, digital watermark-embedding method, and recording medium 有权
标题翻译：数字水印嵌入装置，数字水印嵌入方法和记录介质
公开(公告)号：US07315621B2
公开(公告)日：2008-01-01
申请号：US10431503
申请日：2003-05-08
申请人： Kenichi Noridomi , Hisashi Inoue , Takashi Katsura , Takanori Okada
发明人： Kenichi Noridomi , Hisashi Inoue , Takashi Katsura , Takanori Okada
IPC分类号： H04N7/167 , H04K1/00 , G09C3/08 , G09C3/00 , H04N1/387 , G06T1/00 , G09C5/00
CPC分类号： G06T1/0085 , G06T1/0028
摘要： A characteristic amount is retained and calculated from an entered video signal. Embedment intensity is retained and calculated from the retained characteristic amount. Embedment information is embedded as digital watermarks into the entered video signal in accordance with the retained embedment intensity of the previous frame or field that is located at a position earlier in time than a target image subject to digital watermark embedment. As a result, an output signal of video having the digital watermarks embedded therein is produced. The digital watermarks are embedded into the target image with reference to another image located at a position earlier in time than the target image. Such digital watermark embedment suppresses a delay in output of an output image with reference to an input image.
摘要翻译：从输入的视频信号中保留和计算特征量。从保留的特征量保留并计算嵌入强度。嵌入信息根据前面的帧或场的保留嵌入强度嵌入到输入的视频信号中，该前一帧或场位于比经受数字水印嵌入的目标图像更早时间的位置。结果，产生具有嵌入其中的数字水印的视频的输出信号。参考位于比目标图像更早时间的位置处的另一图像将数字水印嵌入到目标图像中。这样的数字水印嵌入基于输入图像抑制输出图像的输出延迟。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式