Digital Watermarking in Data Representing Color Channels
    31.
    发明申请
    Digital Watermarking in Data Representing Color Channels 有权
    数字水印在表示彩色通道的数据中

    公开(公告)号:US20110007935A1

    公开(公告)日:2011-01-13

    申请号:US12814218

    申请日:2010-06-11

    IPC分类号: G06K9/36

    摘要: The present disclosure relates to digital watermarking. One claim recites a method to detect two or more different digital watermarks in media. The method includes: receiving captured imagery of the media, the captured imagery comprising a plurality of image frames; for a first image frame applying a first watermark detector to search for a first digital watermark hidden within the first image frame, in which an electronic processor is programmed as the first watermark detector; and for a second image frame applying a second, different watermark detector to search for a second, different watermark hidden within the second image frame, in which an electronic processor is programmed as the second watermark detector. Other claims and combinations are provided too.

    摘要翻译: 本公开涉及数字水印。 一个声明提出了一种在媒体中检测两个或多个不同数字水印的方法。 该方法包括:接收所捕获的媒体图像,所捕获的图像包括多个图像帧; 对于第一图像帧,应用第一水印检测器来搜索隐藏在第一图像帧内的第一数字水印,其中电子处理器被编程为第一水印检测器; 并且对于应用第二不同水印检测器的第二图像帧来搜索隐藏在第二图像帧内的第二不同水印,其中电子处理器被编程为第二水印检测器。 也提供其他声明和组合。

    Out of Phase Digital Watermarking in Two Chrominance Directions
    32.
    发明申请
    Out of Phase Digital Watermarking in Two Chrominance Directions 有权
    在两个色度方向上的相位数字水印

    公开(公告)号:US20100150434A1

    公开(公告)日:2010-06-17

    申请号:US12337029

    申请日:2008-12-17

    申请人: Alastair M. Reed

    发明人: Alastair M. Reed

    IPC分类号: G06K9/00

    CPC分类号: G06T1/0028 G06T2201/0051

    摘要: The present invention relate generally to digital watermarking. One claim recites a method including: obtaining first data representing a first chrominance channel of a color image or video, where the first data comprises a watermark signal embedded therein; obtaining second data representing a second chrominance channel of the color image or video, the second data comprising the watermark signal embedded therein but with a signal polarity that is inversely related to the polarity of the watermark signal in the first data; combining the second data with the first data in a manner that reduces image or video interference relative to the watermark signal, said act of combining yielding third data; using at least a processor or electronic processing circuitry, processing the third data to obtain the watermark signal; and once obtained, providing information associated with the watermark signal. Of course, additional combinations and claims are provided as well.

    摘要翻译: 本发明一般涉及数字水印。 一个权利要求描述了一种方法,包括:获得表示彩色图像或视频的第一色度信道的第一数据,其中第一数据包括嵌入其中的水印信号; 获取表示彩色图像或视频的第二色度信道的第二数据,所述第二数据包括嵌入在其中但具有与第一数据中的水印信号的极性成反比的信号极性的水印信号; 以相对于水印信号减小图像或视频干扰的方式将第二数据与第一数据组合,所述组合动作产生第三数据; 使用至少一个处理器或电子处理电路,处理第三数据以获得水印信号; 并且一旦获得,提供与水印信号相关联的信息。 当然,也提供附加的组合和权利要求。

    Conditioning imagery to better receive steganographic encoding
    34.
    发明授权
    Conditioning imagery to better receive steganographic encoding 有权
    调整图像以更好地接收隐写编码

    公开(公告)号:US07668334B2

    公开(公告)日:2010-02-23

    申请号:US11143088

    申请日:2005-06-01

    摘要: The present invention relates to steganography and digital watermarking. In one implementation, we provide a method to analyze a digital image to determine whether the digital image will be a suitable host to receive steganographic encoding or digital watermarking. Suitability is determined, at least in part, by analyzing the digital image relative to an expected workflow process through which a watermarked version of the digital image is expected to flow through. Our methods and systems determine whether the digital image forms a suitable host to receive digital watermarking relative to the expected workflow process. If the digital image is not suitable, the digital image is modified to better receive digital watermarking in anticipation of the expected workflow process.

    摘要翻译: 本发明涉及隐写术和数字水印。 在一个实现中,我们提供一种分析数字图像以确定数字图像是否是适合的主机以接收隐写编码或数字水印的方法。 至少部分地通过分析数字图像相对于期望的数字图像的水印版本流过的预期工作流程来确定适合性。 我们的方法和系统确定数字图像是否形成相对于预期工作流程接收数字水印的合适主机。 如果数字图像不合适,则数字图像被修改为更好地接收数字水印,以期望预期的工作流程。

    Perceptual Modeling of Media Signals for Data Hiding
    35.
    发明申请
    Perceptual Modeling of Media Signals for Data Hiding 有权
    用于数据隐藏的媒体信号的感知建模

    公开(公告)号:US20090207920A1

    公开(公告)日:2009-08-20

    申请号:US12360549

    申请日:2009-01-27

    IPC分类号: H04N11/04

    摘要: 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.

    摘要翻译: 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。

    Readers to Analyze Security Features on Objects
    36.
    发明申请
    Readers to Analyze Security Features on Objects 失效
    读者分析对象上的安全功能

    公开(公告)号:US20090008454A1

    公开(公告)日:2009-01-08

    申请号:US12234938

    申请日:2008-09-22

    IPC分类号: G06K7/10

    摘要: The present invention provides readers to analyze emerging security or authentication feature for physical objects (e.g., identification documents, product packaging, banknotes, etc.). One claim recites a reader including: an excitation source to excite an object with first non-visible light, the object comprising first indicia provided with a first ink or dye and second indicia provided with a second ink or dye, the second ink or dye comprising an emission decay time that is relatively longer than an emission decay time of the first ink or dye, the first indicia and the second indicia collectively conveying a first machine readable feature when illuminated with the first non-visible light, with the second indicia individually conveying a second machine readable feature after emissions attributable to the first indicia fall to a first level; and a code reader to read at least the second machine readable feature after emissions attributable to the first ink or dye fall to the first level and before emissions attributable to the second ink or dye fall to a second level. Other claims and combinations are provided as well.

    摘要翻译: 本发明提供读者分析物理对象(例如,身份证件,产品包装,纸币等)的新出现的安全性或认证特征。 读者包括:用第一不可见光激发物体的激发源,所述物体包括设置有第一墨或染料的第一标记,以及设置有第二墨或染料的第二标记,所述第二墨或染料包含 相对长于第一墨水或染料的发射衰减时间的发射衰减时间,当用第一不可见光照射时,第一标记和第二标记共同地传送第一机器可读特征,第二标记单独输送 在归因于第一标记的排放物之后的第二机器可读特征落到第一级; 以及代码读取器,用于在归因于第一墨水或染料的排放物排放到第一水平之后以及归因于第二墨水或染料的排放物落入第二水平之前至少读取第二机器可读特征。 还提供了其他权利要求和组合。

    Low visibility watermarks using an out-of-phase color
    38.
    发明授权
    Low visibility watermarks using an out-of-phase color 失效
    使用异相色彩的低可见性水印

    公开(公告)号:US06721440B2

    公开(公告)日:2004-04-13

    申请号:US09898901

    申请日:2001-07-02

    IPC分类号: G06K900

    摘要: The present invention relates to digital watermarks. In a preferred embodiment, a media signal is embedded with a digital watermark component. The media signal includes a cyan color plane, a magenta color plane, a yellow color plane, and a black plane. The digital watermark component is embedded in the cyan, magenta, and yellow color planes. The digital watermark component is inverted, and embedded in the black color plane. The resulting watermark is fragile, since signal processing techniques that combine the color planes with the black color plane effectively cancels the watermark signal in local areas. The inventive watermark also includes low-visibility properties, by canceling perceived luminance change in local areas throughout the media signal. In another embodiment, a watermark signal is embedded in a first color scheme to be out-of-color gamut in a second color scheme.

    摘要翻译: 本发明涉及数字水印。 在优选实施例中,媒体信号嵌入有数字水印分量。 媒体信号包括青色平面,品红色平面,黄色平面和黑色平面。 数字水印分量嵌入青色,品红色和黄色色面。 数字水印分量反转,嵌入黑色平面。 所得到的水印是脆弱的,因为将彩色平面与黑色平面相结合的信号处理技术有效地抵消了局部区域中的水印信号。 本发明的水印还包括低能见度特性,通过消除整个媒体信号中局部区域的感知亮度变化。 在另一个实施例中,水印信号被嵌入第一颜色方案中以在第二颜色方案中为色域外的颜色。

    Method and apparatus for adaptively interpolating a digital image
    39.
    发明授权
    Method and apparatus for adaptively interpolating a digital image 失效
    用于自适应地内插数字图像的方法和装置

    公开(公告)号:US5327257A

    公开(公告)日:1994-07-05

    申请号:US841681

    申请日:1992-02-26

    IPC分类号: G06F17/17 H04N1/40

    CPC分类号: G06F17/175

    摘要: Digital image processing apparatus for interpolating a digital input image into an interpolated output image, in one embodiment of the invention, comprises an input buffer (12) for accommodating pixel data of the input image and a coefficient buffer (14) for storing precalculated interpolation weighting coefficients prior to real time image interpolation. The coefficient buffer (14) comprises a first memory segment (22) for containing a set of precalculated sharp interpolating weighting coefficients obtained by using a sharp interpolating algorithm, a second memory segment (24) for containing a set of precalculated soft weighting coefficients obtained by using a soft interpolating algorithm and a third memory segment (26) for containing a set of precalculated weighting coefficients representative of a predetermined characteristic of the input image, such as contrast or density. The processing apparatus further comprises interpolation logic (16) for calculating a sharp interpolated output image pixel, a soft interpolated output image pixel, and a value for the image characteristic, using the input pixel data and the precalculated weighting coefficients, and an algorithm implementation controller (18) for calculating a resultant output pixel by combining the sharp and soft interpolated pixel values as a function of the image characteristic.

    摘要翻译: 在本发明的一个实施例中,用于将数字输入图像内插到内插输出图像中的数字图像处理装置包括用于容纳输入图像的像素数据的输入缓冲器(12)和用于存储预先计算的内插加权的系数缓冲器(14) 系数在实时图像插值之前。 系数缓冲器(14)包括第一存储器段(22),用于包含通过使用尖锐内插算法获得的一组预先计算的尖锐内插加权系数;第二存储器段(24),用于包含一组预先计算的软加权系数, 使用软内插算法和第三存储器段(26),用于包含表示输入图像的预定特性(诸如对比度或密度)的一组预先计算的加权系数。 处理装置还包括使用输入像素数据和预先计算的加权系数来计算尖锐内插输出图像像素,软内插输出图像像素和图像特性值的内插逻辑(16),以及算法实现控制器 (18),用于通过组合作为图像特征的函数的锐利和软内插像素值来计算结果输出像素。

    Out of phase digital watermarking in two chrominance directions
    40.
    发明授权
    Out of phase digital watermarking in two chrominance directions 有权
    在两个色度方向上出现异相数字水印

    公开(公告)号:US09117268B2

    公开(公告)日:2015-08-25

    申请号:US12337029

    申请日:2008-12-17

    申请人: Alastair M. Reed

    发明人: Alastair M. Reed

    IPC分类号: G06K9/00 G06T1/00

    CPC分类号: G06T1/0028 G06T2201/0051

    摘要: The present invention relate generally to digital watermarking. One claim recites a method including: obtaining first data representing a first chrominance channel of a color image or video, where the first data comprises a watermark signal embedded therein; obtaining second data representing a second chrominance channel of the color image or video, the second data comprising the watermark signal embedded therein but with a signal polarity that is inversely related to the polarity of the watermark signal in the first data; combining the second data with the first data in a manner that reduces image or video interference relative to the watermark signal, said act of combining yielding third data; using at least a processor or electronic processing circuitry, processing the third data to obtain the watermark signal; and once obtained, providing information associated with the watermark signal. Of course, additional combinations and claims are provided as well.

    摘要翻译: 本发明一般涉及数字水印。 一个权利要求描述了一种方法,包括:获得表示彩色图像或视频的第一色度信道的第一数据,其中第一数据包括嵌入其中的水印信号; 获取表示彩色图像或视频的第二色度信道的第二数据,所述第二数据包括嵌入在其中但具有与第一数据中的水印信号的极性成反比的信号极性的水印信号; 以相对于水印信号减小图像或视频干扰的方式将第二数据与第一数据组合,所述组合动作产生第三数据; 使用至少一个处理器或电子处理电路,处理第三数据以获得水印信号; 并且一旦获得,提供与水印信号相关联的信息。 当然,也提供附加的组合和权利要求。