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    DIGITAL WATERMARKING OF PICTURE IDENTITY DOCUMENTS USING FACIAL FEATURES
    261.
    发明申请
    DIGITAL WATERMARKING OF PICTURE IDENTITY DOCUMENTS USING FACIAL FEATURES 有权
    使用特征的图像识别文件的数字水印

    公开(公告)号：US20070237354A1

    公开(公告)日：2007-10-11

    申请号：US11278987

    申请日：2006-04-07

    Applicant: Wensheng ZHOU

    Inventor： Wensheng ZHOU

    IPC: G06K9/00 ,  G06K9/46 ,  G06K9/62

    CPC classification number: G06K9/00275 ,  G06K9/6247 ,  G06T1/0057 ,  G06T2201/0052 ,  G06T2201/0083 ,  G07D7/2033 ,  H04N1/3217 ,  H04N1/32187 ,  H04N2201/3233 ,  H04N2201/327

    Abstract: An improved method of watermarking picture identification documents (IDs) such as passports, driver's licenses, identification cards and the like which combines biometric information with digital watermarking to provide an improved secure picture ID document and authentication of same. A facial image—that is part of the identification document—is processed such that particular facial features are extracted from the overall facial image. The extracted features are used to generate a watermark key that is subsequently used to embed a unique watermark into the facial image or other location on the identification document.

    Abstract translation: 将生物统计信息与数字水印相结合的图像识别文件（ID）如护照，驾驶执照，识别卡等的改进方法，以提供改进的安全图片ID文件及其认证。 处理作为识别文档的一部分的面部图像，使得从整体面部图像中提取特定的面部特征。 所提取的特征被用于生成随后用于将唯一水印嵌入面部图像或识别文档上的其他位置的水印密钥。

    Digital Authentication with Digital and Analog Documents
    269.
    发明申请
    Digital Authentication with Digital and Analog Documents 审中-公开
    数字和模拟文档的数字认证

    公开(公告)号：US20070196024A1

    公开(公告)日：2007-08-23

    申请号：US11675505

    申请日：2007-02-15

    Applicant: Jun Tian

    Inventor： Jun Tian

    IPC: G06K9/36

    CPC classification number: G06T1/0028 ,  G06T2201/0052 ,  H04N1/32154 ,  H04N1/3217 ,  H04N1/32187 ,  H04N1/32283 ,  H04N1/3232 ,  H04N1/32331 ,  H04N1/32352 ,  H04N2201/3233 ,  H04N2201/3236 ,  H04N2201/327 ,  H04N2201/328 ,  H04N2201/3284

    Abstract: 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.

    Abstract translation: 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。

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