公开(公告)号：US07461256B2

公开(公告)日：2008-12-02

申请号：US10523351

申请日：2003-07-25

Applicant: Ryuki Tachibana ,  Ryo Sugihara

Inventor： Ryuki Tachibana ,  Ryo Sugihara

IPC: H04L9/00 ,  H04N7/167

CPC classification number: H04N1/32144 ,  G06T1/0028 ,  G06T1/0085 ,  G06T2201/0052 ,  G06T2201/0202 ,  H04N1/32229

Abstract: A method for generating watermark signals to be embedded as a digital watermark in real-time contents wherein the method includes: inputting the real-time contents; storing the real-time contents; generating watermark signals corresponding to predicted intensities of the real-time contents from divided real-time contents; and storing the generated watermark signals to be outputted.

Abstract translation: 一种在实时内容中产生要嵌入作为数字水印的水印信号的方法，其中所述方法包括：输入所述实时内容; 存储实时内容; 从分割的实时内容产生对应于实时内容的预测强度的水印信号; 并存储所生成的要输出的水印信号。

公开(公告)号：US07454034B2

公开(公告)日：2008-11-18

申请号：US10869178

申请日：2004-06-15

Applicant: Ahmed Tewfik ,  Mitchell D. Swanson ,  Bin Zhu

Inventor： Ahmed Tewfik ,  Mitchell D. Swanson ,  Bin Zhu

IPC: G06K9/00

CPC classification number: G06T1/0028 ,  G06T1/005 ,  G06T2201/0052 ,  G06T2201/0065 ,  G06T2201/0202 ,  G10L19/018

Abstract: A digital watermarking method performs tonal detection on a signal (e.g., audio) to identify tonal and non-tonal components. These components are analyzed to compute appropriate weighting of a digital watermark for the tonal and non-tonal components. This tonal detection method is also used in recovering the watermark. A decoding method performs tonal detection on a watermarked signal, computes weights for tonal and non-tonal components, and recovers the embedded watermark using the weights. The same or different watermark embedding schemes may be used to embed digital watermarks in the tonal and non-tonal components. Tonal analysis is used in conjunction with frequency and temporal shaping to adapt the digital watermark to the signal in which it is embedded.

Abstract translation: 数字水印方法对信号（例如，音频）执行色调检测以识别色调和非音调分量。 分析这些组件以计算用于色调和非音调分量的数字水印的适当加权。 这种色调检测方法也用于恢复水印。 解码方法对水印信号执行色调检测，计算色调和非色调分量的权重，并使用权重恢复嵌入的水印。 可以使用相同或不同的水印嵌入方案来将音频和非音调分量中的数字水印嵌入。 音调分析与频率和时间整形一起使用，以使数字水印适应其嵌入的信号。

公开(公告)号：US20080273861A1

公开(公告)日：2008-11-06

申请号：US11793546

申请日：2006-06-23

Applicant: Fuzheng Yang ,  Zhong Luo ,  Shuai Wan ,  Yilin Chang

Inventor： Fuzheng Yang ,  Zhong Luo ,  Shuai Wan ,  Yilin Chang

IPC: H04N5/91

CPC classification number: H04N17/004 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0083 ,  G06T2201/0202

Abstract: A method for measuring multimedia communication quality is disclosed. The multimedia video communication quality may be objectively reflected through the embedment and extraction of digital watermark under a precondition that the quality of the multimedia video data is not obviously affected. In the invention, each frame of the multimedia video data is uniformly divided into blocks of equal size and watermark data is embedded in each of the blocks, so that the watermark may be uniformly distributed. The multimedia video data are divided into groups, and the watermark is embedded in a part of the frames with equal interval between the frames in each group to reduce the effect of the watermark on the data. The watermark information is directly embedded in the spatial domain of the original video data. The PSNR of the video data is linearly fitted using the accuracy rate of the recovered watermark relative to the original watermark, and the fitted PSNR is regarded as a measurement indication of the multimedia video communication quality. Post-processing such as smoothing filtering is performed on video frames after watermark extraction to eliminate the effect of the watermark on the multimedia video data quality.

Abstract translation: 公开了一种用于测量多媒体通信质量的方法。 多媒体视频通信质量可以通过数字水印的嵌入和提取在多媒体视频数据的质量不受明显影响的前提下被客观地反映出来。 在本发明中，将多媒体视频数据的每一帧均匀地划分为相同大小的块，并且将水印数据嵌入到每个块中，使得水印可以均匀分布。 多媒体视频数据被分成组，并且水印被嵌入在每个组中的帧之间具有相等间隔的帧的一部分中以减少水印对数据的影响。 水印信息直接嵌入到原始视频数据的空间域中。 视频数据的PSNR使用相对于原始水印的恢复水印的准确率线性拟合，拟合PSNR被认为是多媒体视频通信质量的测量指示。 对水印提取后的视频帧进行平滑滤波等后处理，消除水印对多媒体视频数据质量的影响。

公开(公告)号：US20080130883A1

公开(公告)日：2008-06-05

申请号：US11740742

申请日：2007-04-26

Applicant: Sos S. Agaian ,  David Akopian ,  Ravindranath C. Cherukuri ,  Juan Pablo Perez ,  Benjamin M. Rodriguez ,  Ronnie R. Sifuentes

Inventor： Sos S. Agaian ,  David Akopian ,  Ravindranath C. Cherukuri ,  Juan Pablo Perez ,  Benjamin M. Rodriguez ,  Ronnie R. Sifuentes

IPC: G09C5/00 ,  G06K9/00

CPC classification number: G09C5/00 ,  G06T1/0028 ,  G06T1/0078 ,  G06T2201/0051 ,  G06T2201/0202

Abstract: Methods and systems for securing digital imagery are provided. In one respect, embedding, compression, encryption, data hiding, and other imaging processing techniques and systems may be provided for digital image security. In one non-limiting example, a method for producing a compressed and encrypted image is provided. An image may be converted into a binary bit stream, and the bit stream may be decomposed into a plurality of segments. A binary sequence based on a first key may be generated and may be used to generate a code matrix. A distance between the code matrix and the distance may be determined for each of the plurality of segments. Using a combined first and second key, a compressed and encrypted image may be obtained.

Abstract translation: 提供了保护数字图像的方法和系统。 在一方面，可以提供嵌入，压缩，加密，数据隐藏和其他成像处理技术和系统以用于数字图像安全。 在一个非限制性示例中，提供了一种用于产生压缩和加密图像的方法。 图像可以被转换为二进制比特流，并且比特流可以被分解成多个片段。 可以生成基于第一密钥的二进制序列并且可以用于生成代码矩阵。 可以针对多个段中的每一个确定码矩阵和距离之间的距离。 使用组合的第一和第二密钥，可以获得压缩和加密的图像。

公开(公告)号：US20080118102A1

公开(公告)日：2008-05-22

申请号：US11978785

申请日：2007-10-30

Applicant: Severine Baudry ,  Corinne Naturel ,  Philippe Nguyen

Inventor： Severine Baudry ,  Corinne Naturel ,  Philippe Nguyen

IPC: G06K9/36 ,  G06F17/30 ,  H04L27/00

CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0202

Abstract: The invention relates to a digital data set watermarking method including the following steps: a. Generating, from at least one part of the digital data set, a first set of M n-uplets representative of the digital data set where n and M are integers, M≧1 and n≧1, b. Determining, in a predefined batch of K n-uplets, a set of M n-uplets, called second set, closest in the sense of predefined metrics to the first set where K is an integer and K≧M, and c. Modifying at least one data item of the digital data set in such a way that the first set generated according to step a) from the modified data set is equal to the second set.

Abstract translation: 本发明涉及一种数字数据集水印方法，包括以下步骤：a。 b）从数字数据集的至少一部分生成表示数字数据集的第一组M n表示，其中n和M是整数，M> = 1且n> = 1。 在预定批次的K n-uplet中确定一组称为第二集合的M n up up，在预定义度量的意义上与第一组最接近，其中K是整数，K> = M，以及c。 以使得根据步骤a）生成的第一组与修改后的数据集相等的方式修改数字数据集的至少一个数据项。

公开(公告)号：US20080095397A1

公开(公告)日：2008-04-24

申请号：US11846449

申请日：2007-08-28

Applicant: Geoffrey Rhoads ,  J. Carr

Inventor： Geoffrey Rhoads ,  J. Carr

IPC: G06K9/00 ,  G10L11/00

CPC classification number: G06K19/06037 ,  B29C45/1418 ,  B42D25/00 ,  B42D25/29 ,  G06F17/30876 ,  G06K7/1417 ,  G06K7/1447 ,  G06K9/00442 ,  G06K19/06046 ,  G06K19/14 ,  G06K19/18 ,  G06K2017/0064 ,  G06K2019/06253 ,  G06Q20/123 ,  G06Q20/341 ,  G06Q20/40145 ,  G06T1/0021 ,  G06T1/0028 ,  G06T1/0057 ,  G06T2201/0051 ,  G06T2201/0202 ,  G07C9/00079 ,  G07D7/0034 ,  G07D7/004 ,  G07F7/086 ,  G07F7/1008 ,  G10L19/018 ,  G11B20/00884 ,  G11B20/00891 ,  H04N1/00005 ,  H04N1/00037 ,  H04N1/00079 ,  H04N1/32122 ,  H04N1/32144 ,  H04N1/32149 ,  H04N1/3216 ,  H04N1/32187 ,  H04N1/32203 ,  H04N1/32208 ,  H04N1/32219 ,  H04N1/32229 ,  H04N1/32251 ,  H04N1/32261 ,  H04N1/32277 ,  H04N1/32288 ,  H04N1/32304 ,  H04N1/32352 ,  H04N21/23892 ,  H04N21/8358 ,  H04N2201/3205 ,  H04N2201/3207 ,  H04N2201/3225 ,  H04N2201/3226 ,  H04N2201/3233 ,  H04N2201/3239 ,  H04N2201/3249 ,  H04N2201/327 ,  H04N2201/3271 ,  H04N2201/3274 ,  H04N2201/328

Abstract: The present invention relates generally to steganography and digital watermarking. One method recites: encoding content with a plural-bit digital watermark in accordance with initial encoding parameters; determining an assessment of the encoded plural-bit digital watermark in each of two or more portions of the content; for each of the two or more portions of the content, adjusting at least one of the initial encoding parameters according to a determined assessment for a respective portion of the content; and encoding the content with said plural-bit watermark in accordance with adjusted encoding parameters. Other methods are provided and claimed as well.

Abstract translation: 本发明一般涉及隐写术和数字水印。 一种方法叙述：根据初始编码参数用多位数字水印编码内容; 确定所述内容的两个或多个部分中的每一个中的编码的多位数字水印的评估; 对于所述内容的两个或多个部分中的每一个，根据所述内容的相应部分的确定的评估来调整所述初始编码参数中的至少一个; 以及根据调整的编码参数用所述多位水印对内容进行编码。 还提供并要求保护其他方法。

公开(公告)号：US07321666B2

公开(公告)日：2008-01-22

申请号：US10698409

申请日：2003-11-03

Applicant: Akiomi Kunisa

Inventor： Akiomi Kunisa

IPC: G06K9/00 ,  H04L9/00

CPC classification number: G06T1/0071 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0202

Abstract: A digital watermarking apparatus that embeds two watermarks in host data is provided. The first watermarking block generates a plurality of watermarking location candidates of the first watermark, and embeds the first watermark into the respective location candidates of the host data, and then selects one candidate with a high level of robustness as the first watermarked host data. The second watermarking block scrambles the watermarking location information on the first watermark and thereby generates a plurality of the second watermark candidates. Then the second watermarking block embeds the respective second watermark candidates in the first watermarked host data and selects one candidate with a high level of robustness as the second watermarked host data.

Abstract translation: 提供了一种在主机数据中嵌入两个水印的数字水印设备。 第一水印块生成第一水印的多个水印位置候选，并将第一水印嵌入到主机数据的相应位置候选中，然后选择具有高水平的鲁棒性的一个候选作为第一加水印的主机数据。 第二水印块对第一水印的水印位置信息进行加扰从而生成多个第二水印候选。 然后第二水印嵌入块嵌入第一水印主体数据中的相应的第二水印候选，并且选择一个具有高水平的鲁棒性的候选作为第二加水印的主机数据。

公开(公告)号：US07302577B2

公开(公告)日：2007-11-27

申请号：US10317533

申请日：2002-12-12

Applicant: Jason Charles Pelly ,  Daniel Warren Tapson

Inventor： Jason Charles Pelly ,  Daniel Warren Tapson

IPC: H04L9/00 ,  H04K1/00

CPC classification number: G06T1/0028 ,  G06T2201/0052 ,  G06T2201/0063 ,  G06T2201/0202

Abstract: A watermarking system comprises an encoding data processor operable to generate at least one marked version of an original item of material by introducing one of a predetermined set of code words into a copy of the original material item. The encoding processor comprises a code word generator operable to form the code word by generating a plurality of code word coefficients, and an encoder operable to combine the code word coefficients with the material item, and an adaptation processor. The adaptation processor is operable to adapt the strength of the code word coefficients or the material item samples in accordance with a relative sensitivity of the material item samples to carry the code word coefficients. The strength of the watermark is therefore adapted in accordance with the sensitivity of the material item to carry watermark code word coefficients. As a result there is a reduced likelihood of an attacker identifying parts of the material item to which the watermark code word has been added. A likelihood of a successful attack is thereby reduced whilst maintaining a desired false negative detection probability.The watermarking system finds particular application in identifying a point of distribution of pirate copies of video material generated by capturing the watermarked image, using, for example, a camcorder in a cinema.

Abstract translation: 一种水印系统包括：编码数据处理器，可操作以通过将预定的一组代码字中的一个引入原始物料的副本来产生原始物料的至少一个标记版本。 该编码处理器包括一个代码字生成器，用于通过产生多个代码字系数来形成代码字，以及一个编码器，可操作以将代码字系数与材料项相结合，以及一个自适应处理器。 适应处理器可操作以根据材料项目样本的相对灵敏度来适应码字系数或材料项样本的强度以携带码字系数。 因此，水印的强度根据物质项目的灵敏度来适应携带水印码字系数。 结果，攻击者识别出已经添加了水印码字的物质项目的部分的可能性降低了。 从而降低成功攻击的可能性，同时保持所需的假阴性检测概率。 水印系统在识别通过使用例如电影院中的摄像机捕获水印图像而产生的视频资料的盗版副本的分布点上发现了特定的应用。

公开(公告)号：US07283643B2

公开(公告)日：2007-10-16

申请号：US10919360

申请日：2004-08-17

Applicant: Eric Nguyen

Inventor： Eric Nguyen

IPC: G06K9/00

CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0061 ,  G06T2201/0065 ,  G06T2201/0202 ,  H04N1/32154 ,  H04N1/3217 ,  H04N1/32187 ,  H04N1/32277 ,  H04N2201/3233 ,  H04N2201/327

Abstract: The invention is a method for determining a segmentation into distinct regions of a set of coefficients representing at least part of an image in order to insert or extract a set of watermarking signals with a predetermined cardinal. The method of the invention generates a set of acceptable segmentations, calculates, for each acceptable segmentation, a probability of error on the detection of the watermarking signals inserted in said each acceptable segmentation, and selects at least a segmentation in the set of acceptable segmentations, on consideration of the probability of error subject to a constraint on the number of regions of the selected segmentation, with respect to said predetermined cardinal.

Abstract translation: 本发明是一种用于确定将表示至少部分图像的一系列系数的不同区域分割成用于插入或提取具有预定基数的一组​​水印信号的方法。 本发明的方法产生一组可接受的分段，对于每个可接受的分割，对插入在所述每个可接受分割中的水印信号的检测进行误差概率计算，并且选择该组可接受分割中的至少一个分割， 考虑到相对于所述预定的基数对受选择的分割的区域的数量的限制的错误概率。

公开(公告)号：US20070201099A1

公开(公告)日：2007-08-30

申请号：US11740770

申请日：2007-04-26

Applicant: Takami Eguchi ,  Keiichi Iwamura

Inventor： Takami Eguchi ,  Keiichi Iwamura

IPC: H04N1/40

CPC classification number: G06T1/0028 ,  G06T1/0078 ,  G06T2201/0051 ,  G06T2201/0202 ,  H04N1/32203 ,  H04N1/32219 ,  H04N1/3232

Abstract: An apparatus receives a document image and digital-watermark information and determines an embedding capacity based on a number of the letters in the document image. The apparatus determines whether or not the entire digital-watermark information is capable of being embedded in the document image based on the determined embedding capacity and embeds the digital-watermark information in the document image based on a result of the determination of whether or not the entire digital-watermark information is capable of being embedded in the document image.

Abstract translation: 一种装置接收文件图像和数字水印信息，并且基于文档图像中的字母数确定嵌入容量。 该装置基于所确定的嵌入容量来确定整个数字水印信息是否能够被嵌入在文档图像中，并且基于确定的数字水印信息的结果将数字水印信息嵌入在文档图像中 整个数字水印信息能够嵌入在文档图像中。