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公开(公告)号：US07427334B2
公开(公告)日：2008-09-23
申请号：US11419718
申请日：2006-05-22
申请人： Adnan M. Alattar
发明人： Adnan M. Alattar
CPC分类号： D21F9/00 , D21F11/00 , G03G21/046 , G06T1/0021 , G06T2201/0052
摘要： The present invention provides methods and apparatus to encode substrates (e.g., paper, synthetics, etc.) with information. In one implementation a method is provided including: receiving data that corresponds to a two-dimensional signal that encodes plural bits of data; receiving data that corresponds to a frequency-domain signal, the data corresponding to a representation in a spatial domain through inverse transforming the frequency-domain signal; and defining characteristics for an element of a substrate-making process, the characteristics including at least a pattern representing the spatial domain representation and the two-dimensional signal.
摘要翻译： 本发明提供了用信息编码基底（例如，纸，合成物等）的方法和装置。 在一个实现中，提供了一种方法，包括：接收对应于编码多个数据位的二维信号的数据; 通过对频域信号进行逆变换来接收对应于频域信号的数据，所述数据对应于空间域中的表示; 以及定义衬底制造过程的元件的特性，所述特征至少包括表示空间域表示和二维信号的图案。
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42.发明授权Authentication of physical and electronic media objects using digital watermarks 失效使用数字水印认证物理和电子媒体对象公开(公告)号：US07424131B2
公开(公告)日：2008-09-09
申请号：US11050888
申请日：2005-02-03
IPC分类号： H04K1/00
CPC分类号： B42D25/333 , B42D25/00 , G06F17/30876 , G06K7/1417 , G06K7/1447 , G06K9/00442 , G06K19/06037 , G06K19/06046 , G06K19/14 , G06K19/18 , G06K2017/0064 , G06K2019/06253 , G06Q20/341 , G06Q20/40145 , G06T1/0028 , G06T1/005 , G06T1/0064 , G06T2201/0052 , G06T2201/0065 , G07C9/00079 , G07D7/0034 , G07D7/004 , G07F7/086 , G07F7/1008 , G10L19/018 , G11B20/00086 , G11B20/00884 , G11B20/00891 , H04L2463/103 , H04N1/00005 , H04N1/00037 , H04N1/00079 , H04N1/00846 , H04N1/00875 , H04N1/32122 , H04N1/32144 , H04N1/32154 , H04N1/3216 , H04N1/32203 , H04N1/32208 , H04N1/32251 , H04N1/32288 , H04N1/32352 , H04N19/467 , H04N21/23892 , H04N21/8358 , H04N2201/3205 , H04N2201/3207 , H04N2201/3225 , H04N2201/3226 , H04N2201/3233 , H04N2201/327 , H04N2201/3271 , H04N2201/3274 , H04N2201/328 , H04N2201/3284
摘要： Digital watermark methods for encoding auxiliary data into a host signal are used to authenticate physical and electronic objects. One such method computes a content specific message dependent on the host signal, encodes the content specific message into a watermark signal, and embeds the watermark in the host signal such that the watermark signal is substantially imperceptible in the host signal. One specific implementation embeds data representing salient features of the host signal into the watermark. For example, for photo IDs, the method embeds the spatial location of salient features of the photo into the watermark. Another implementation computes a semi-sensitive hash of the host signal, such as a low pass filtering of the signal, and embeds the hash into the watermark. The watermark signal may be content dependent by making the watermark key dependent on some attribute of the signal in which the watermark is embedded. Another approach is to make the watermark key dependent on a user or an attribute of the user. Yet another approach is to use multiple watermark components and multiple watermark detection stages that help identify and screen out invalid watermark signals. Another digital watermarking method for authenticating a media object transforms a media signal to a frequency domain comprising an array of frequency coefficients. It selects a first set of frequency coefficients, and alters the selected first set of frequency coefficients so that values of the coefficients in the set correspond to a pattern. The pattern of the media signal is authenticated by comparing a pattern of the values of the frequency coefficients in the set with an expected pattern.
摘要翻译： 用于将辅助数据编码为主机信号的数字水印方法用于认证物理和电子对象。 一种这样的方法根据主机信号计算内容特定消息，将内容特定消息编码成水印信号，并将该水印嵌入主机信号中，使得水印信号在主机信号中基本上是不可察觉的。 一个具体实现将表示主机信号的显着特征的数据嵌入到水印中。 例如，对于照片ID，该方法将照片的显着特征的空间位置嵌入到水印中。 另一个实施方案计算主机信号的半敏感散列，例如信号的低通滤波，并将散列嵌入到水印中。 通过使水印密钥取决于嵌入水印的信号的一些属性，水印信号可以是内容依赖的。 另一种方法是使水印密钥取决于用户或用户的属性。 另一种方法是使用多个水印分量和多个水印检测阶段来帮助识别和屏蔽无效的水印信号。 另一种用于认证媒体对象的数字水印方法将媒体信号转换成包括频率系数阵列的频域。 它选择第一组频率系数，并且改变所选择的第一组频率系数，使得集合中的系数值对应于模式。 通过将集合中的频率系数的值的模式与预期模式进行比较来认证媒体信号的模式。
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公开(公告)号：US07050201B2
公开(公告)日：2006-05-23
申请号：US10642451
申请日：2003-08-14
申请人： Adnan M. Alattar
发明人： Adnan M. Alattar
CPC分类号： D21F9/00 , D21F11/00 , G03G21/046 , G06T1/0021 , G06T2201/0052
摘要： Paper is textured with a pattern that yields a known signature signal when transformed to the frequency domain. This signature can be used for various purposes, including determining the angular orientation of the paper when scanned, conveying a plural-bit digital watermark, and for simple document recognition purposes (e.g., photocopiers that refuse to reproduce banknotes). The texturing can be effected during the paper-making process, e.g., by shaping the surface of a de-watering element accordingly.
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公开(公告)号：US07020304B2
公开(公告)日：2006-03-28
申请号：US10350276
申请日：2003-01-22
IPC分类号： G06K9/00
CPC分类号： G06T1/0085 , G06T1/0064 , G06T1/0071 , G06T2201/0051 , G06T2201/0052 , G06T2201/0061 , G06T2201/0065 , G06T2201/0601
摘要： This disclosure describes several video watermarking and fingerprinting enhancements. These enhancements include synchronizing watermark detectors with one-dimensional calibration signals, layering digital watermarks, watermarks for version control, compressed domain watermarking, watermarking of video object layers, key channel watermark embedding for video, robust fingerprinting of video and watermarking of scalable video.
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公开(公告)号：US06385329B1
公开(公告)日：2002-05-07
申请号：US09618948
申请日：2000-07-19
IPC分类号： H04K100
CPC分类号： H04N19/467 , G06T1/0064 , G06T2201/0052 , H04H20/31 , H04N1/32154 , H04N1/3217 , H04N1/32192 , H04N1/32203 , H04N1/32288 , H04N1/32352 , H04N7/163 , H04N19/645 , H04N21/23892 , H04N21/44008 , H04N21/4627 , H04N21/8358 , H04N2201/3233 , H04N2201/327 , H04N2201/3281 , H04N2201/3284
摘要： A wavelet domain watermark encoder and decoder embed and detect auxiliary signals in a media signal, such as a still image, video or audio signal. A watermark orientation signal is embedded in a wavelet decomposed signal to facilitate detection of the watermark in a geometrically distorted version of the embedded signal.
摘要翻译： 小波域水印编码器和解码器在诸如静止图像，视频或音频信号的媒体信号中嵌入和检测辅助信号。 水印定向信号嵌入在小波分解信号中，以便于在嵌入信号的几何失真版本中检测水印。
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公开(公告)号：US5544239A
公开(公告)日：1996-08-06
申请号：US257950
申请日：1994-06-10
申请人： Stuart J. Golin , Adnan M. Alattar
发明人： Stuart J. Golin , Adnan M. Alattar
CPC分类号： H04N5/145
摘要： A method and apparatus for improving motion analysis in fade regions where motion compensation systems based on block matching typically fail to accurately encode images. A previous image is selected from an image sequence. A base image is calculated by adjusting the brightness of the previous image. A displacement vector representing the magnitude and direction of the displacement between at least one region in a target image and a corresponding region in the base image is determined. The displacement vector is applied to a corresponding region in a previous reconstructed image to form a predicted image, and is then encoded. Pixel values in the predicted image are subtracted from corresponding pixel values in the target image to form an error image which is also encoded.
摘要翻译： 一种用于改善在基于块匹配的运动补偿系统通常不能精确地编码图像的渐变区域中的运动分析的方法和装置。 从图像序列中选择先前的图像。 通过调整先前图像的亮度来计算基本图像。 确定表示目标图像中的至少一个区域与基本图像中的相应区域之间的位移的大小和方向的位移矢量。 位移矢量被施加到先前重建图像中的相应区域以形成预测图像，然后被编码。 预测图像中的像素值从目标图像中的相应像素值中减去，以形成也被编码的误差图像。
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47.发明授权
公开(公告)号：US5262855A
公开(公告)日：1993-11-16
申请号：US856515
申请日：1992-03-25
申请人： Adnan M. Alattar , Michael Keith , Stuart J. Golin
发明人： Adnan M. Alattar , Michael Keith , Stuart J. Golin
CPC分类号： G06T7/2073 , H04N19/117 , H04N19/132 , H04N19/139 , H04N19/14 , H04N19/142 , H04N19/156 , H04N19/162 , H04N19/172 , H04N19/196 , H04N19/198 , H04N19/51 , H04N19/59 , H04N19/146 , H04N19/149 , H04N19/15
摘要： A method and apparatus for encoding a sequence of digital motion video images at more than one resolution. In a first embodiment, it is determined whether an image selected from the sequence is part of either a dissolve, a fade, a fast motion region or a complex motion region. If the selected image is part of either a dissolve, a fade, a fast motion region or a complex motion region, then the selected image is encoded at a reduced resolution level. In a further embodiment, a selected image is provided for encoding. A determination is then made whether a parameter derived from an estimate of the available decoding time is above a predetermined threshold. If the parameter is above the predetermined threshold, then the selected image is encoded at a reduced resolution. In a still further embodiment, a selected image from a sub-sequence of images is provided for encoding. A determination is then made whether the quantization step size associated with the image is greater than a predetermined threshold. If the quantization step size is greater than the predetermined threshold, then the image is encoded at a reduced resolution. The image is partially encoded if it is within the first N minus one images provided from the sub-sequence, otherwise the image is fully encoded.
摘要翻译： 公开了一种用于以多于一种分辨率编码数字运动视频图像序列的方法和装置。 在第一实施例中，确定从序列中选择的图像是否是溶解，淡出，快速运动区域或复杂运动区域的一部分。 如果所选择的图像是溶解，淡入淡出，快速运动区域或复杂运动区域的一部分，则所选择的图像以降低的分辨率级别被编码。 在另一个实施例中，提供了选择的图像用于编码。 然后确定从可用解码时间的估计导出的参数是否高于预定阈值。 如果参数高于预定阈值，则所选择的图像以降低的分辨率被编码。 在又一实施例中，提供了来自图像子序列的选择图像用于编码。 然后确定与图像相关联的量化步长是否大于预定阈值。 如果量化步长大于预定阈值，则以降低的分辨率对图像进行编码。 如果图像是在前N个减去从子序列提供的一个图像之内，则部分编码，否则图像被完全编码。
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