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    Signal Encoding for Physical Objects including Dark Ink
    71.
    发明申请
    Signal Encoding for Physical Objects including Dark Ink 审中-公开

    公开(公告)号：US20200286200A1

    公开(公告)日：2020-09-10

    申请号：US16785351

    申请日：2020-02-07

    Applicant: Digimarc Corporation

    Inventor： Alastair M. Reed ,  Jay Sperry ,  Kristyn R. Falkenstern

    IPC: G06T1/00 ,  H04N1/32 ,  C09B29/00 ,  C09B57/00 ,  C09D11/037

    Abstract: This disclosure relates to advanced image signal processing technology including encoded signals and digital watermarking. One implementation is directed a printed object comprising: a substrate comprising a first area; a first colored ink or design printed within the first area, the first colored ink or design comprising a spectral reflectivity of less than or equal to 20% at or around 660 nm; a colored ink mixture printed over the first colored ink or design at a first plurality of spatial locations within the first area, the colored ink mixture printed such that the first area comprises a second plurality of spatial locations without the colored ink mixture, the colored ink mixture comprising opaque white ink and a first colorant, wherein the color ink mixture comprises a spectral reflectivity greater than the first colored ink or design at or around 660 nm, and wherein colored ink mixture comprises a spectral reflectivity less than the first colored ink or design in the range of 495 nm-570 nm; in which the first plurality of spatial locations is arranged in a pattern conveying an encoded signal, and in which the first colored ink or design and the colored ink mixture comprise a spectral reflectivity difference at or around 660 nm in a difference range of 8%-30%. Of course, other objects, methods, packages, labels, containers, systems and apparatus are described in this patent document.

    Machine-readable glass
    75.
    发明授权
    Machine-readable glass 有权

    公开(公告)号：US09600754B2

    公开(公告)日：2017-03-21

    申请号：US14971930

    申请日：2015-12-16

    Applicant: Digimarc Corporation

    Inventor： Tony F. Rodriguez ,  Kristyn R. Falkenstern ,  Alastair M. Reed

    IPC: G06K19/06 ,  G06K7/10

    CPC classification number: G06K19/06037 ,  G06K7/1095

    Abstract: In one embodiment, a sidewalk-facing display window of a retail store is treated to scatter (or absorb) a portion of incident light, in a narrow wavelength spectral band. A machine-readable pattern, which encodes an identifier, is projected onto the treated window from outside the store. The reflection (absorption) of that projected pattern, within the narrow spectral band, escapes notice of shoppers on the sidewalk. Yet if a shopper captures imagery of a product displayed on the other side of the display window, using a mobile device camera, the pattern is captured with the imagery, and can be analyzed to decode the identifier. The mobile device can use this decoded identifier to access online information about the displayed product, for presentation to the shopper on the mobile device display. The technology is particularly suited for wearable computing devices, and more generally enables glass windows to subliminally convey digital information to image sensors conveyed by passing shoppers. A great variety of other features and arrangements are also detailed.

    FULL COLOR VISIBILITY MODEL USING CSF WHICH VARIES SPATIALLY WITH LOCAL LUMINANCE
    76.
    发明申请
    FULL COLOR VISIBILITY MODEL USING CSF WHICH VARIES SPATIALLY WITH LOCAL LUMINANCE 审中-公开
    全彩色可见性模型，使用各种空间与本地照明

    公开(公告)号：US20160316098A1

    公开(公告)日：2016-10-27

    申请号：US15137401

    申请日：2016-04-25

    Applicant: Digimarc Corporation

    Inventor： Alastair M. Reed ,  Kristyn R. Falkenstern ,  David Berfanger ,  Yang Bai

    IPC: H04N1/32 ,  H04N1/60

    CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0083 ,  G06T2201/0202 ,  H04N1/32309 ,  H04N1/6005 ,  H04N2201/3233

    Abstract: The present disclosure relate generally to image signal processing, color science and signal encoding. One claim recites an apparatus including: an input for obtaining color image data; memory for storing a luminance contrast sensitivity function (CSF1) and a chrominance contrast sensitivity function (CSF2); means for degrading data representing color image data with the CSF1 and the CSF2 to predict visibility changes attributable to encoding plural-bit information in the obtained color image data, in which the CSF1 varies depending on luminance values associated with local regions of the color image data, in which said means for degrading data representing color image data yields results for different image areas within the color image data, and in which the CSF1 is used for degrading luminance data and the CSF2 is used for degrading chrominance data; and means for altering the color image data by encoding plural-bit information therein, in which signal embedding strength of the encoding within the different image areas varies based on the results. Of course, other features, combinations and claims are disclosed as well.

    Abstract translation: 本公开一般涉及图像信号处理，色彩科学和信号编码。 一个权利要求记载一种装置，包括：用于获得彩色图像数据的输入; 用于存储亮度对比度敏感度函数（CSF1）和色度对比度敏感度函数（CSF2）的存储器; 用于使用CSF1和CSF2降级表示彩色图像数据的数据的装置，用于预测可归因于所获得的彩色图像数据中的多位信息的识别变化，其中CSF1根据与彩色图像数据的局部区域相关联的亮度值而变化 其中所述用于降低表示彩色图像数据的数据的装置产生彩色图像数据内的不同图像区域的结果，并且其中使用CSF1降解亮度数据，并且使用CSF2降低色度数据; 以及用于通过对其中的多位信息进行编码来改变彩色图像数据的装置，其中不同图像区域内的编码的信号嵌入强度基于结果而变化。 当然，也公开了其它特征，组合和权利要求。

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