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    Hardware-adaptable watermark systems
    141.
    发明授权
    Hardware-adaptable watermark systems 有权

    公开(公告)号：US09819950B2

    公开(公告)日：2017-11-14

    申请号：US14842575

    申请日：2015-09-01

    Applicant: Digimarc Corporation

    Inventor： Jacob L. Boles ,  Ravi K. Sharma ,  John D. Lord

    IPC: G06K9/00 ,  H04N19/42 ,  G06T1/00 ,  G06K7/10

    CPC classification number: H04N19/42 ,  G06T1/0064 ,  G06T2200/28 ,  G06T2201/0065

    Abstract: There are many advantages to implementing a watermark-based system using dedicated hardware, rather than using software executing on a general purpose processor. These include higher speed and lower power consumption. However, hardware implementations incur substantial design and development costs. Moreover, because each watermarking application has its own design constraints and parameters, it has not been cost-effective to develop a hardware chip design for each, since such chips would typically not be manufactured in volumes sufficient to bring per-unit costs down to an acceptable level. The present technology provides various techniques for making watermarking hardware adaptable, so that a single chip can serve multiple diverse watermark applications. By so-doing, the advantages of hardware implementation are made available where it was formerly cost-prohibitive, thereby enhancing operation of a great variety of watermark-based systems.

    Extending watermark detection distortion tolerances
    143.
    发明授权
    Extending watermark detection distortion tolerances 有权

    公开(公告)号：US09710870B2

    公开(公告)日：2017-07-18

    申请号：US14637121

    申请日：2015-03-03

    Applicant: Digimarc Corporation

    Inventor： Alastair M. Reed ,  Ravi K. Sharma

    IPC: G06K9/00 ,  G06T1/00

    CPC classification number: G06T1/005 ,  G06K9/00 ,  G06T1/00 ,  G06T1/0021 ,  G06T1/0085 ,  G06T2201/0051 ,  G06T2201/0065

    Abstract: The present disclosures relates generally to digital watermarking and data hiding. One claim recites a smartphone comprising: a camera to capture video of a display that is rendering video, in which the video comprises a first watermark signal embedded in a first portion of the data, a second watermark signal embedded in a second portion of the data, and a third watermark signal embedded in a third portion of the data, in which at least two of the first watermark signal, second watermark signal and third watermark signal are inversely related to one another; electronic memory for buffering data representing captured video; one or more electronic processors programmed for: applying a first perspective distortion to the data representing the captured video to yield first perspective distorted video; and analyzing the first perspective distorted video to detect digital watermarking, in which a second perspective distortion is applied to the data representing the captured video to yield second perspective distorted video when the analyzing does not detect digital watermarking, and then performing analyzing the second perspective distorted video to detect digital watermarking. Of course, other claims are provided too.

    MULTI-MODE AUDIO RECOGNITION AND AUXILIARY DATA ENCODING AND DECODING
    144.
    发明申请
    MULTI-MODE AUDIO RECOGNITION AND AUXILIARY DATA ENCODING AND DECODING 有权

    公开(公告)号：US20170133022A1

    公开(公告)日：2017-05-11

    申请号：US15220209

    申请日：2016-07-26

    Applicant: Digimarc Corporation

    Inventor： Aparna R. Gurijala ,  Yang Bai ,  Ravi K. Sharma ,  Brett A. Bradley

    IPC: G10L19/018 ,  G10L19/028 ,  G10L25/87

    CPC classification number: G10L19/018 ,  G10L19/02 ,  G10L19/028 ,  G10L25/87

    Abstract: Audio signal processing enhances audio watermark embedding and detecting processes. Audio signal processes include audio classification and adapting watermark embedding and detecting based on classification. Advances in audio watermark design include adaptive watermark signal structure data protocols, perceptual models, and insertion methods. Perceptual and robustness evaluation is integrated into audio watermark embedding to optimize audio quality relative the original signal, and to optimize robustness or data capacity. These methods are applied to audio segments in audio embedder and detector configurations to support real time operation. Feature extraction and matching are also used to adapt audio watermark embedding and detecting.

    HISTOGRAM METHODS AND SYSTEMS FOR OBJECT RECOGNITION
    147.
    发明申请
    HISTOGRAM METHODS AND SYSTEMS FOR OBJECT RECOGNITION 审中-公开
    用于对象识别的组织方法和系统

    公开(公告)号：US20170032213A1

    公开(公告)日：2017-02-02

    申请号：US15224975

    申请日：2016-08-01

    Applicant: Digimarc Corporation

    Inventor： Ravi K. Sharma

    IPC: G06K9/46 ,  G06K9/62 ,  G06K9/38

    CPC classification number: G06K9/4642 ,  G06F17/30256 ,  G06K9/38 ,  G06K9/4652 ,  G06K9/6201 ,  G06K9/6212 ,  G06T7/11 ,  H04M2250/52

    Abstract: A multidimensional histogram is used to characterize an image (or object), and is used to identify candidate matches with one or more reference images (or objects). An exemplary implementation employs hue information for two of the dimensions, and a second derivative function based on luminance for a third dimension. The simplicity and speed of the detailed arrangements make them well suited for use with cell phones and other mobile devices, which can use the technology for image/object recognition, e.g., in visual search applications.

    Abstract translation: 多维直方图用于表征图像（或对象），并用于识别与一个或多个参考图像（或对象）的候选匹配。 示例性实施方案使用两个维度的色调信息，以及基于第三维度的亮度的二阶导数函数。 详细布置的简单性和速度使得它们非常适用于可以使用用于图像/对象识别的技术的手机和其他移动设备，例如在视觉搜索应用中。

    DISTRIBUTED COMPUTING FOR PORTABLE COMPUTING DEVICES
    148.
    发明申请
    DISTRIBUTED COMPUTING FOR PORTABLE COMPUTING DEVICES 审中-公开
    便携式计算设备的分布式计算

    公开(公告)号：US20170024467A1

    公开(公告)日：2017-01-26

    申请号：US15137855

    申请日：2016-04-25

    Applicant: Digimarc Corporation

    Inventor： Ravi K. Sharma ,  Tony F. Rodriguez

    IPC: G06F17/30 ,  G10L25/21 ,  G10L25/18 ,  H04M1/02 ,  G06K9/00

    CPC classification number: G06F17/30743 ,  G05B2219/24162 ,  G06K9/00503 ,  G06K9/0053 ,  G06T1/0064 ,  G06T2201/0052 ,  G10L25/18 ,  G10L25/21 ,  H04M1/0264 ,  H04N1/00204 ,  H04N1/00244 ,  H04N1/00307 ,  H04N1/00358 ,  H04N1/00363 ,  H04N1/00973 ,  H04N1/32117 ,  H04N1/32144 ,  H04N1/3216 ,  H04N2201/0096 ,  H04N2201/3226 ,  H04N2201/3233 ,  H04N2201/327 ,  H04N2201/3278 ,  H04W88/02

    Abstract: This disclosure describes a distributed reader architecture for a mobile computing device such as cellular telephone handset. One claim recites a portable computing device including: memory for storing a library of processing components, the library including a signal detector component and an audio fingerprinting component; a microphone for capturing ambient audio; one or more processors configured for: invoking the audio fingerprinting component for processing captured audio to produce an audio fingerprint, wherein the audio fingerprinting component comprises a filtering process, in which the filtering process produces components of the captured audio that are used to produce the audio fingerprint; and invoking the signal detector component, in which the signal detector component comprises a fast detect process for analyzing the captured audio to determine the presence of an auxiliary signal within the captured audio, and when the presence of the auxiliary signal is detected, controlling the signal detector component for detecting the auxiliary signal to yield a detected auxiliary signal. The device further includes a communications output for communicating the audio fingerprint and the detected auxiliary signal to a remotely located server. Of course, other claims and combinations are provided as well.

    Abstract translation: 本公开描述了用于诸如蜂窝电话手机的移动计算设备的分布式读取器架构。 一个权利要求记载便携式计算设备，包括：用于存储处理组件库的存储器，所述库包括信号检测器组件和音频指纹分量; 用于捕获环境音频的麦克风; 一个或多个处理器被配置用于：调用音频指纹分量以处理所捕获的音频以产生音频指纹，其中所述音频指纹分量包括滤波处理，其中所述滤波处理产生用于产生所述音频的所捕获的音频的分量 指纹; 并且调用信号检测器部件，其中信号检测器部件包括用于分析所捕获的音频以确定所捕获的音频内的辅助信号的存在的快速检测处理，并且当检测到辅助信号的存在时，控制信号 检测器部件，用于检测辅助信号以产生检测到的辅助信号。 该设备还包括用于将音频指纹和检测到的辅助信号传送到位于远程的服务器的通信输出。 当然，也提供其他权利要求和组合。

    Steganographic encoding and decoding
    149.
    发明授权
    Steganographic encoding and decoding 有权
    隐写编码和解码

    公开(公告)号：US09509882B2

    公开(公告)日：2016-11-29

    申请号：US14936263

    申请日：2015-11-09

    Applicant: Digimarc Corporation

    Inventor： Alastair M. Reed ,  Ravi K. Sharma ,  Tony F. Rodriguez

    IPC: G06T1/00 ,  H04N1/32 ,  G06T11/00 ,  H04N1/60

    CPC classification number: G06T1/005 ,  G06T1/0021 ,  G06T11/001 ,  G06T2201/0083 ,  H04N1/32144 ,  H04N1/32267 ,  H04N1/32309 ,  H04N1/6005 ,  H04N1/6008 ,  H04N2201/3228 ,  H04N2201/3233 ,  H04N2201/327

    Abstract: This patent document relates generally to steganography and digital watermarking. One claim recites an apparatus comprising: electronic memory for buffering samples corresponding to a digital image; means for analyzing a digital image relative to an expected workflow process, the expected workflow process comprising optical capture of a printed version of the digital image, the digital image comprising data representing process colors CMY; means for applying tone correction to the digital image, said means for applying yielding an altered digital image; means for transforming the altered digital image with digital watermarking, the digital watermarking conveying a plural-bit message; and a processor configured for providing the transformed, altered digital image. Of course, other claims and combinations are provided too.

    Abstract translation: 该专利文献一般涉及隐写术和数字水印。 一个权利要求记载一种装置，包括：用于缓冲对应于数字图像的样本的电子存储器; 用于相对于期望的工作流过程分析数字图像的装置，所述预期工作流程包括数字图像的打印版本的光学捕获，所述数字图像包括表示处理颜色CMY的数据; 用于对数字图像应用色调校正的装置，所述用于应用的装置产生改变的数字图像; 用于利用数字水印变换改变的数字图像的装置，数字水印传送多位消息; 以及配置用于提供经变换的改变的数字图像的处理器。 当然，也提供其他权利要求和组合。

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