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    Watermarking recursive hashes into frequency domain regions
    2.
    发明授权
    Watermarking recursive hashes into frequency domain regions 有权
    将水印递归到频域区域

    公开(公告)号：US06683966B1

    公开(公告)日：2004-01-27

    申请号：US09689293

    申请日：2000-10-11

    申请人： Jun Tian ,  Stephen K. Decker ,  Hugh L. Brunk

    发明人： Jun Tian ,  Stephen K. Decker ,  Hugh L. Brunk

    IPC分类号： G06K900

    CPC分类号： G06T1/0028 ,  G06T2201/0052 ,  H04N1/3216 ,  H04N1/3217 ,  H04N1/32187 ,  H04N1/32283 ,  H04N1/32352 ,  H04N2201/3233 ,  H04N2201/3236 ,  H04N2201/327

    摘要： A watermark embedder transforms a media signal from its perceptual domain to frequency domain regions and embeds a hash of data from one frequency domain region into a watermark in another frequency domain region. Alternatively, it encodes instances of the same message into the frequency domain regions. To detect alteration of the media signal, a watermark decoder transforms a suspect signal into the frequency domain regions, extracts the watermark message from a first frequency domain region and compares it with a reference derived from another frequency domain region. The reference signal is either a hash computed from the other frequency domain region of the watermarked signal, or another instance of the same message embedded into the other frequency domain region. The decoder can be used to detect alteration of the signal, such as alteration that occurs with reproduction (printing, scanning, copying, D/A-A/D conversion, etc.), compression, cropping or swapping of media signal content, etc.

    摘要翻译： 水印嵌入器将媒体信号从感知域转换到频域区域，并将来自一个频域区域的数据的散列嵌入另一个频域区域中的水印。 或者，它将相同消息的实例编码到频域区域中。 为了检测媒体信号的变化，水印解码器将可疑信号转换成频域区域，从第一频域区域提取水印消息，并将其与从另一个频域区域导出的参考进行比较。 参考信号是从水印信号的另一频域区域计算的散列或嵌入到另一频域区域中的相同消息的另一实例。 解码器可用于检测信号的变化，例如再现（打印，扫描，复制，D / A-A / D转换等），媒体信号内容的压缩，裁剪或交换等发生的变化。

    Watermark holograms
    5.
    发明授权
    Watermark holograms 有权
    水印全息图

    公开(公告)号：US06782115B2

    公开(公告)日：2004-08-24

    申请号：US10282908

    申请日：2002-10-28

    申请人： Stephen K. Decker ,  Hugh L. Brunk ,  J. Scott Carr ,  Geoffrey B. Rhoads

    发明人： Stephen K. Decker ,  Hugh L. Brunk ,  J. Scott Carr ,  Geoffrey B. Rhoads

    IPC分类号： G06K900

    CPC分类号： B42D25/29 ,  B29C45/1418 ,  G03H1/08 ,  G03H2001/0022 ,  G06T1/0021 ,  G06T2201/0083 ,  G07D7/0032 ,  G07D7/0034 ,  G07D7/004 ,  G07F7/08 ,  G07F7/086 ,  G07F7/12 ,  H04N1/00249 ,  H04N1/32219 ,  H04N1/32261 ,  H04N1/32304 ,  H04N2201/3205 ,  H04N2201/3207 ,  H04N2201/3215 ,  H04N2201/3226 ,  H04N2201/3233 ,  H04N2201/3239 ,  H04N2201/327 ,  H04N2201/3271 ,  H04N2201/3281

    摘要： Methods for integrating digital watermarks into holograms, watermarked hologram structures, and related applications. One method creates a watermark image, and then embeds the watermark image into a holographic structure. The holographic structure is created using computer generated holography to create a digital representation of the holographic structure. This digital representation is recorded on a physical substrate using optical techniques or microlithography. As an alterative, a watermark signal is embedded in a physical holographic structure by embedding the signal into an image that is optically merged with the holographic structure as it is optically recorded, or by embedding the signal into an image or physical model from which the holographic structure is formed. Another approach the creates a halftone watermarked image, and forms the halftone watermarked image in the hologram by creating hologram dots corresponding to the dots in the halftone watermarked image.

    摘要翻译： 将数字水印整合成全息图，水印全息图结构和相关应用的方法。 一种方法创建水印图像，然后将水印图像嵌入全息结构中。 使用计算机生成的全息术创建全息结构以创建全息结构的数字表示。 使用光学技术或微光刻将该数字表示记录在物理基板上。 作为替代，水印信号嵌入在物理全息结构中，通过将信号嵌入到与光学记录的全息结构光学合并的图像中，或者通过将信号嵌入图像或物理模型中，将全息图 结构形成。 另一种方法是产生半色调水印图像，并通过产生对应于半色调水印图像中的点的全息图点在全息图中形成半色调水印图像。

    Assessing quality of service using digital watermark information
    8.
    发明授权
    Assessing quality of service using digital watermark information 有权
    使用数字水印信息评估服务质量

    公开(公告)号：US08130811B2

    公开(公告)日：2012-03-06

    申请号：US12692470

    申请日：2010-01-22

    申请人： Jun Tian ,  Kenneth L. Levy ,  Hugh L. Brunk

    发明人： Jun Tian ,  Kenneth L. Levy ,  Hugh L. Brunk

    IPC分类号： H04B1/00 ,  H04N7/167

    CPC分类号： H04N17/004 ,  G06T1/0021 ,  H04N21/4425 ,  H04N21/8358

    摘要： The disclosure details methods of measuring the quality of service of received media signals by analyzing digital watermarks embedded in such signals. The quality of a received video or audio signal can thereby be assessed without having the original version of the signal before transmission. Instead, the strength or quality of the embedded digital watermark is analyzed to determine the quality of the received signal. The degradation of a watermark signal is used to assess quality of service of signals, such as audio and video. Several other features and arrangements are also detailed.

    摘要翻译： 本公开详细描述了通过分析嵌入在这些信号中的数字水印来测量接收的媒体信号的服务质量的方法。 因此可以在传送前没有信号的原始版本来评估所接收的视频或音频信号的质量。 相反，分析嵌入式数字水印的强度或质量来确定接收信号的质量。 水印信号的劣化用于评估诸如音频和视频的信号的服务质量。 还详细介绍了其他一些功能和安排。

    Assessing quality of service using digital watermark information
    9.
    发明授权
    Assessing quality of service using digital watermark information 有权
    使用数字水印信息评估服务质量

    公开(公告)号：US07656930B2

    公开(公告)日：2010-02-02

    申请号：US11866145

    申请日：2007-10-02

    申请人： Jun Tian ,  Kenneth L. Levy ,  Hugh L. Brunk

    发明人： Jun Tian ,  Kenneth L. Levy ,  Hugh L. Brunk

    IPC分类号： H04B1/00 ,  H04N7/167

    CPC分类号： H04N17/004 ,  G06T1/0021 ,  H04N21/4425 ,  H04N21/8358

    摘要： The disclosure details methods of measuring the quality of service of received media signals by analyzing digital watermarks embedded in such signals. The quality of a received video or audio signal can thereby be assessed without having the original version of the signal before transmission. Instead, the strength or quality of the embedded digital watermark is analyzed to determine the quality of the received signal. The degradation of a watermark signal is used to assess quality of service of signals, such as audio and video.

    摘要翻译： 本公开详细描述了通过分析嵌入在这些信号中的数字水印来测量接收的媒体信号的服务质量的方法。 因此可以在传送前没有信号的原始版本来评估所接收的视频或音频信号的质量。 相反，分析嵌入式数字水印的强度或质量来确定接收信号的质量。 水印信号的劣化用于评估诸如音频和视频的信号的服务质量。

    Assessing Quality of Service Using Digital Watermark Information
    10.
    发明申请
    Assessing Quality of Service Using Digital Watermark Information 有权
    使用数字水印信息评估服务质量

    公开(公告)号：US20110022937A1

    公开(公告)日：2011-01-27

    申请号：US12692470

    申请日：2010-01-22

    申请人： Jun Tian ,  Kenneth L. Levy ,  Hugh L. Brunk

    发明人： Jun Tian ,  Kenneth L. Levy ,  Hugh L. Brunk

    IPC分类号： G06F11/07 ,  H04B1/69 ,  H04L9/06

    CPC分类号： H04N17/004 ,  G06T1/0021 ,  H04N21/4425 ,  H04N21/8358

    摘要： The disclosure details methods of measuring the quality of service of received media signals by analyzing digital watermarks embedded in such signals. The quality of a received video or audio signal can thereby be assessed without having the original version of the signal before transmission. Instead, the strength or quality of the embedded digital watermark is analyzed to determine the quality of the received signal. The degradation of a watermark signal is used to assess quality of service of signals, such as audio and video. Several other features and arrangements are also detailed.

    摘要翻译： 本公开详细描述了通过分析嵌入在这些信号中的数字水印来测量接收的媒体信号的服务质量的方法。 因此可以在传送前没有信号的原始版本来评估所接收的视频或音频信号的质量。 相反，分析嵌入式数字水印的强度或质量来确定接收信号的质量。 水印信号的劣化用于评估诸如音频和视频的信号的服务质量。 还详细介绍了其他一些功能和安排。