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    • 21. 发明申请
    • Embedding data in material
    • 将资料嵌入资料
    • US20020118859A1
    • 2002-08-29
    • US10006294
    • 2001-12-06
    • Jonathan James StoneJason Charles PellyStephen Mark Keating
    • G06K009/00
    • G06T1/005G06T1/0028G06T2201/0052G06T2201/0081G06T2201/0083G06T2201/0202G06T2201/0203H04N1/32154H04N1/3217H04N1/32347H04N2201/328
    • A method of embedding data in material comprises the steps of: embedding data in original material to produce data embedded material; removing the watermark from the data embedded material to produce recovered material; comparing the original and recovered material to determine the differences and locations of differences therebetween; and storing the said locations and corrections which correct the said differences. A method of removing the data embedded in the material. comprises the steps of: removing the data from the material to produce recovered material: deriving the said corrections and locations from the said store; and using the corrections to correct the recovered material at the said locations. A method of embedding data in material, preferably comprises the steps of: producing transform coefficients Ci representing a spatial frequency transform of the material, and combining the coefficients Ci with the data bits Ri to produce a modified coefficient Cinull where CinullnullCinullnulli Ri the method further comprising determining nulli for each unmodified coefficient Ci as a function FnullCnnulli of a predetermined set nullCnnulli of transform coefficients Cn which set excludes the coefficient Ci.
    • 将数据嵌入材料的方法包括以下步骤:将数据嵌入到原始材料中以产生数据嵌入材料; 从数据嵌入材料中去除水印以产生回收的材料; 比较原始和回收的材料以确定其间的差异和位置; 并存储所述位置和校正来校正所述差异。 一种删除材料中嵌入的数据的方法。 包括以下步骤:从所述材料中去除所述数据以产生回收的材料:从所述商店导出所述校正和位置; 并使用校正来校正所述位置处的回收材料。 将数据嵌入材料中的方法优选地包括以下步骤:产生表示材料的空间频率变换的变换系数Ci,并将系数Ci与数据位Ri组合以产生修正系数Ci',其中<段落lv1 =“ 该方法还包括:将每个未修改系数Ci确定为预定集合{Cn的函数F {Cn} i的矩阵 所设置的变换系数Cn的i i不包括系数Ci。
    • 23. 发明授权
    • Method and apparatus for embedding data, including watermarks, in human
perceptible sounds
    • 用于将数据(包括水印)嵌入到人类可感知的声音中的方法和装置
    • US6061793A
    • 2000-05-09
    • US918891
    • 1997-08-27
    • Ahmed H. TewfikMitchell D. SwansonBin ZhuLaurence Boney
    • Ahmed H. TewfikMitchell D. SwansonBin ZhuLaurence Boney
    • G06T1/00G10L19/02H04N1/32H04N7/26H04N7/30H04N7/167
    • H04N21/8358G10L19/02H04N1/32165H04N1/3217H04N1/32187H04N1/32192H04N19/154H04N21/23892H04N2201/3233H04N2201/327
    • A technique for hiding of data, including watermarks, in human-perceptible sounds, that is, audio host data, is disclosed. In one embodiment a method comprises three steps. In the first step, data to be embedded is inputted. In the case of a watermark, this data is a unique signature, and may be a pseudo-noise (PN) code. In the case of hidden data to be embedded in the host data, this data is the hidden data itself, or the hidden data as spread against the frequency spectrum by a pseudo-noise (PN) code. In the second step, the inputted data is embedded within the host data, in accordance with a perceptual mask of the host data. The perceptual mask determines the optimal locations within the host data to insert the inputted data. In the case of sounds, these optimal locations are determined by reference to the human auditory system. In the third step, the host data, with the embedded data, is further masked by a non-frequency mask. In the case of audio data, the non-frequency mask is a temporal mask.
    • 公开了一种在人类可感知的声音中隐藏数据(包括水印)的技术,即音频主机数据。 在一个实施例中,一种方法包括三个步骤。 在第一步中,输入要嵌入的数据。 在水印的情况下,该数据是唯一的签名,并且可以是伪噪声(PN)码。 在嵌入在主机数据中的隐藏数据的情况下,该数据是隐藏数据本身,或通过伪噪声(PN)码对频谱扩散的隐藏数据。 在第二步骤中,根据主机数据的感知掩码将输入的数据嵌入在主机数据内。 感知掩码确定主机数据内的最佳位置以插入输入的数据。 在声音的情况下,这些最佳位置是通过参考人类听觉系统确定的。 在第三步中,具有嵌入数据的主机数据被非频率掩码进一步屏蔽。 在音频数据的情况下,非频率掩码是时间掩码。
    • 27. 发明申请
    • Perceptual Modeling of Media Signals for Data Hiding
    • 用于数据隐藏的媒体信号的感知建模
    • US20090207920A1
    • 2009-08-20
    • US12360549
    • 2009-01-27
    • Brett T. HanniganAlastair M. ReedBrett Alan Bradley
    • Brett T. HanniganAlastair M. ReedBrett Alan Bradley
    • H04N11/04
    • G06T1/0028G06T2201/0051H04N1/3216H04N1/32165H04N1/3217H04N1/32187H04N1/32192
    • The present invention relates generally to embedding auxiliary data and data hiding. One claim recites a method including: calculating with a processor or electronic circuitry characteristics of a media signal comprising audio or video; based at least in part on calculated characteristics of the media signal, providing a map of the media signal, wherein the map identifies at least one portion of the media signal in which plural-bit data should be steganographically encoded; transforming at least some portions of the media signal into a transform domain; and steganographically encoding with a processor or electronic circuitry auxiliary data in data representing at least the one portion of the media signal in which the plural-bit data should be steganographically encoded, and wherein at least said act of transforming or said act of steganographically encoding utilizes the map of the media signal. Other claims and combinations are also provided.
    • 本发明一般涉及嵌入辅助数据和数据隐藏。 一个要求描述了一种方法,包括:利用包括音频或视频的媒体信号的处理器或电子电路特性进行计算; 至少部分地基于所计算的媒体信号的特性,提供媒体信号的映射,其中,所述映射标识要对其进行隐写编码的多位数据的媒体信号的至少一部分; 将所述媒体信号的至少一些部分转换成变换域; 以及在代表媒体信号的至少一部分的数据中的处理器或电子电路辅助数据的隐写编码,其中多位数据应被隐写编码,并且其中至少所述变换动作或所述隐写编码动作利用 媒体信号的地图。 还提供了其他权利要求和组合。
    • 28. 发明授权
    • Insertion of supplementary information in digital data
    • 在数字数据中插入补充信息
    • US07499546B2
    • 2009-03-03
    • US10415500
    • 2001-10-31
    • Ioana DonescuPatrice Onno
    • Ioana DonescuPatrice Onno
    • H04N7/167
    • H04N1/32101H04N1/32128H04N1/32154H04N1/3217H04N1/32277H04N2201/3233H04N2201/328
    • The invention concerns a method of inserting a suppementary information item in a set of data reprenting physical quantities, the data having been processed by the steps of, a) partitioning (E2) the set into subsets, b) entropic coding (E4) of each of the subsets, c) selecting (E8), for each of the subsets, a compression rate and distortion pair according to a global compression rate or a global distortion, d) writing, for each of the subsets, an index (Tij) representing the selected compression rate and distortion pair, in a file containing the coded subsets, characterised in that it also includes a step (E11) of modifying the selected compression rate and distortion pairs, according to the supplementary information (wm).
    • 本发明涉及一种将重复信息项插入到一组重复物理量的数据中的方法,该数据已经通过以下步骤进行处理:a)将集合划分成(E2)子集,b)每个子集的熵编码(E4) 的子集,c)根据全局压缩率或全局失真,为每个子集选择(E8)压缩率和失真对,d)为每个子集写入表示(E8)的索引(Tij) 所选择的压缩率和失真对,在包含编码子集的文件中,其特征在于还包括根据补充信息(wm)修改所选压缩率和失真对的步骤(E11)。