Progressive watermark decoding on a distributed computing platform
    1.
    发明申请
    Progressive watermark decoding on a distributed computing platform 有权
    分布式计算平台上的逐行水印解码

    公开(公告)号:US20050036653A1

    公开(公告)日:2005-02-17

    申请号:US10828930

    申请日:2004-04-20

    IPC分类号: G06T1/00 G06K9/00

    CPC分类号: G06T1/005 G06T2201/0065

    摘要: The disclosure describes a method of progressively decoding a digital watermark on a distributed computing platform. A client device equipped with a digital camera, such as a PDA or cell phone, captures a digital image of a watermarked object, and pre-filters the image to isolate a portion of the image data suspected of containing a digital watermark. The pre-filter de-correlates a portion of the image data suspected of containing a digital watermark from the remaining host image signal using a predictive filter. The client then quantizes the filtered data and progressively transmits the quantized data to a watermark decoder. The progressive transmitter sends image data as necessary to achieve a valid decoding operation. To reduce bandwidth requirements, the transmitter starts with the most highly quantized version of the filtered image, and sends lesser quantized versions until the watermark decoder completes a successful decoding operation.

    摘要翻译: 本公开描述了在分布式计算平台上逐渐解码数字水印的方法。 配备有诸如PDA或手机的数字照相机的客户端设备捕获水印物体的数字图像,并对图像进行预过滤以隔离怀疑包含数字水印的图像数据的一部分。 预滤波器使用预测滤波器将怀疑含有数字水印的图像数据的一部分与剩余的主机图像信号相关联。 然后,客户端对经滤波的数据进行量化,并将量化的数据逐渐发送到水印解码器。 逐行发送器根据需要发送图像数据以实现有效的解码操作。 为了减少带宽要求,发射机以最高量化版本的滤波图像开始,并发送较小的量化版本,直到水印解码器完成成功的解码操作。

    Distributed Content Identification
    2.
    发明申请
    Distributed Content Identification 有权
    分布式内容识别

    公开(公告)号:US20070286454A1

    公开(公告)日:2007-12-13

    申请号:US11758573

    申请日:2007-06-05

    IPC分类号: G06K9/00

    CPC分类号: G06T1/005 G06T2201/0065

    摘要: A method of identifying content in a distributed computing system. The method receives an image or audio signal in a first device in the distributed computing system, such as a cell phone or other wireless device. In this device, the method performs an analysis of characteristics of the signal to identify portions of the signal from which to derive a content identifier. The method then sends the portions to a second, remote device in the distributed computing system, such as a server. The server further processes the portions to derive a content identifier, which in turn, is used to look up data corresponding to the content, such as a Uniform Resource Locator. In the case of a wireless telephone network, for example, the method distributes the task of identifying content signals captured through the microphone or camera on the phones in the network.

    摘要翻译: 一种在分布式计算系统中识别内容的方法。 该方法在诸如蜂窝电话或其他无线设备的分布式计算系统中的第一设备中接收图像或音频信号。 在该装置中,该方法对信号的特性进行分析,以识别从其导出内容标识符的信号的部分。 该方法然后将部分发送到分布式计算系统(例如服务器)中的第二远程设备。 服务器进一步处理部分以导出内容标识符,该内容标识符又用于查找与内容相对应的数据,例如统一资源定位符。 在无线电话网络的情况下,例如,该方法将通过麦克风或相机捕获的内容信号的任务分配给网络中的电话。

    Digital Watermarking Apparatus and Methods
    4.
    发明申请
    Digital Watermarking Apparatus and Methods 有权
    数字水印仪和方法

    公开(公告)号:US20070110275A1

    公开(公告)日:2007-05-17

    申请号:US11622202

    申请日:2007-01-11

    IPC分类号: G06K9/00

    摘要: The present invention relates to various digital watermarking methods and systems. In one embodiment, a plurality of microlenses can provide a steganographic signal for a handheld device. The pattern corresponds to (or conveys) an identifier. In yet another embodiment, monetary objects are watermarked to signify currency denomination information. The information, once extracted, is used to provide feedback regarding the currency denomination. An audio signal or Braille output can be provided as feedback. In still another embodiment, a document management system is based on watermarks. Embedded watermarks are used to track document history, determine document version information, and enhance overall security. Handheld computing devices are advantageously employed with these embodiments.

    摘要翻译: 本发明涉及各种数字水印方法和系统。 在一个实施例中,多个微透镜可以为手持设备提供隐写信号。 模式对应于(或传达)标识符。 在另一个实施例中,货币对象被加水印以表示货币面额信息。 一旦提取的信息用于提供关于货币面额的反馈。 可以提供音频信号或盲文输出作为反馈。 在另一个实施例中,文档管理系统基于水印。 嵌入水印用于跟踪文档历史记录,确定文档版本信息,增强整体安全性。 这些实施例有利地采用手持式计算装置。

    Digital watermarking apparatus and methods
    7.
    发明申请
    Digital watermarking apparatus and methods 失效
    数字水印设备及方法

    公开(公告)号:US20050141750A1

    公开(公告)日:2005-06-30

    申请号:US11060919

    申请日:2005-02-17

    摘要: The present invention relates to various digital watermarking methods and systems. In one embodiment, a plurality of microlenses can provide a steganographic signal for a handheld device. The pattern corresponds to (or conveys) a unique device identifier. In yet another embodiment, monetary objects are watermarked with payload information to signify currency denomination. The payload information, once extracted, is used to provide feedback regarding the currency denomination. An audio signal or Braille output can be provided as feedback. In still another embodiment, a document management system is based on watermarks. Embedded watermarks are used to track document history, determine document version information, and enhance overall security. Handheld computing devices are advantageously employed with these embodiments.

    摘要翻译: 本发明涉及各种数字水印方法和系统。 在一个实施例中,多个微透镜可以为手持设备提供隐写信号。 该模式对应于(或传送)唯一的设备标识符。 在另一个实施例中,货币对象用有效载荷信息加水印以表示货币面额。 有效载荷信息一旦被提取,就用于提供关于货币面额的反馈。 可以提供音频信号或盲文输出作为反馈。 在另一个实施例中,文档管理系统基于水印。 嵌入水印用于跟踪文档历史记录,确定文档版本信息,增强整体安全性。 这些实施例有利地采用手持式计算装置。

    Electronic Forms Including Digital Watermarking
    8.
    发明申请
    Electronic Forms Including Digital Watermarking 有权
    包括数字水印的电子表格

    公开(公告)号:US20070242823A1

    公开(公告)日:2007-10-18

    申请号:US11688682

    申请日:2007-03-20

    IPC分类号: G09C5/00

    摘要: The present invention relates to creating and managing electronic documents. In one implementation, a method includes obtaining electronic data corresponding to an application document to obtain a driver's license; analyzing the electronic data to detect steganographic indicia encoded therein, the steganographic indicia comprising a plural-bit identifier; and associating the plural-bit identifier with a plurality of different records associated with an applicant or the application document. Other implementations are provided as well.

    摘要翻译: 本发明涉及创建和管理电子文档。 在一个实现中,一种方法包括获取与应用文档相对应的电子数据以获得驾驶执照; 分析电子数据以检测其中编码的隐写标记,所述隐写标记包括多位标识符; 以及将所述多位标识符与与申请人或所述申请文档相关联的多个不同记录相关联。 还提供其他实现。

    Watermark Systems and Methods
    9.
    发明申请
    Watermark Systems and Methods 有权
    水印系统与方法

    公开(公告)号:US20070183623A1

    公开(公告)日:2007-08-09

    申请号:US11548167

    申请日:2006-10-10

    IPC分类号: G06K9/00

    摘要: A number of novel watermarking applications, and improvements to watermarking methods, are disclosed. Included are techniques for encoding printed circuit boards and street signs with watermarks, deterring credit card fraud and controlling software licensing using watermarks, registering collectibles via watermarks, encoding the margins of printed pages with watermarks, and using watermarks to convey extra information in video by which fidelity of the rendered video may be improved. One particular arrangement is a method in which a PDA, wristwatch, or other portable device with a display screen presents a pattern that includes a machine-readable identifier. This image is sensed by a separate device, such as a webcam or a camera-equipped cell phone. The sensing device can then take an action based on the identifier. In some arrangements, the action is personalized to the user.

    摘要翻译: 公开了一些新颖的水印应用以及对水印方法的改进。 包括用于编码印刷电路板和具有水印的街道标志的技术,阻止信用卡欺诈和使用水印控制软件许可,通过水印注册收藏品,用水印对打印页面的边缘进行编码,以及使用水印来传达视频中的额外信息, 可以提高渲染视频的保真度。 一种特定的布置是其中具有显示屏的PDA,手表或其他便携式设备呈现包括机器可读标识符的图案的方法。 该图像由单独的设备感测到,例如网络摄像机或配备有相机的手机。 然后,感测装置可以基于标识符采取动作。 在一些安排中,该操作被个性化给用户。

    Authentication Methods and Systems Including Embedded Auxiliary Data
    10.
    发明申请
    Authentication Methods and Systems Including Embedded Auxiliary Data 有权
    包括嵌入式辅助数据的认证方法和系统

    公开(公告)号:US20070170248A1

    公开(公告)日:2007-07-26

    申请号:US11613088

    申请日:2006-12-19

    IPC分类号: G06K5/00

    摘要: The present invention generally relates to steganography and digital watermarking. An authentication method is provided in one embodiment. The method includes receiving an object including a host object and auxiliary data steganographically embedded within the host object; determining geometric characteristics of the host object relative to expected geometric characteristics of the host object; and detecting the auxiliary data from the host object. The method can further include re-aligning or correcting geometric characteristics of the object based on a result of the act of determining prior to the act of detecting. Other embodiments, method and apparatus and described as well.

    摘要翻译: 本发明一般涉及隐写术和数字水印。 在一个实施例中提供了认证方法。 所述方法包括:接收包括宿主对象的对象和被隐写地嵌入所述主机对象内的辅助数据; 确定所述主机对象相对于所述主机对象的预期几何特征的几何特征; 并从主机对象检测辅助数据。 该方法还可以包括基于在检测动作之前确定的动作的结果来重新对准或校正对象的几何特征。 其他实施例,方法和装置也被描述。