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    Encoding signals with printed clear topcoats
    31.
    发明授权
    Encoding signals with printed clear topcoats 有权

    公开(公告)号：US11900497B1

    公开(公告)日：2024-02-13

    申请号：US17833683

    申请日：2022-06-06

    Applicant: Digimarc Corporation

    Inventor： Kristyn R. Falkenstern

    IPC: G06T1/00 ,  B41M3/10

    CPC classification number: G06T1/005 ,  B41M3/10 ,  G06T1/0028 ,  G06T2201/0065

    Abstract: The present disclosure relates to signal processing such as digital watermarking and other encoded signals. One claim recites a substrate comprising: a plurality of first areas and a plurality of second areas, in which each of the plurality of first areas comprises a color ink printed therein with a first clear topcoat layer printed over the color ink, and in which each of the plurality of second areas comprises the color ink printed therein, and a second clear topcoat layer printed over the color ink, in which the first clear topcoat layer and the second clear topcoat layer each comprise a different sheen relative to one another, and in which the plurality of second areas is arranged on the substrate in hole locations provided in the first clear topcoat layer, the second clear topcoat layer filling in the holes, the holes arranged according to a 2-dimensional pattern that is machine-readable from image data depicting such. Of course, other claims and combinations are provided in the specification with reference to specific implementations and related examples.

    Utilizing dependency between watermark visibility and location of image sample in color space for embedded signal color direction
    32.
    发明授权
    Utilizing dependency between watermark visibility and location of image sample in color space for embedded signal color direction 有权

    公开(公告)号：US11657469B2

    公开(公告)日：2023-05-23

    申请号：US17358873

    申请日：2021-06-25

    Applicant: Digimarc Corporation

    Inventor： Alastair M. Reed ,  Kristyn R. Falkenstern

    IPC: G06T1/00

    CPC classification number: G06T1/005 ,  G06T1/0028 ,  G06T2201/0053 ,  G06T2201/0061

    Abstract: The present disclosure relates generally to signal encoding for printed objects. One implementation selects an embed direction based on a minimal visibility axis of a 1 JND ellipse at a certain color center. One claim recites an apparatus comprising: memory for storing chromatic contrast sensitivity data representing multiple color encoding angles; one or more multi-core processors configured for: using the stored chromatic contrast sensitivity data, generating an ellipse around a first color center; and from the ellipse, determining a signal encode direction, the signal encode direction comprising an angle α representing a negative angle between the ‘a*’ axis in an CIELAB space and a direction of minimum sensitivity of an encoded signal, in which the angle α comprises −9 degrees≥α≥−25 degrees. Other technology described.

    Signal encoding based on spectral requirements
    36.
    发明授权
    Signal encoding based on spectral requirements 有权

    公开(公告)号：US10445849B1

    公开(公告)日：2019-10-15

    申请号：US16119410

    申请日：2018-08-31

    Applicant: Digimarc Corporation

    Inventor： Alastair M. Reed ,  Kristyn R. Falkenstern

    IPC: G06K9/00 ,  G06T1/00 ,  B41M3/14 ,  H04N1/32 ,  B41M3/10

    Abstract: This disclosure relates to advanced image signal processing technology including encoded signals and digital watermarking. One implementation is directed to a printed object comprising: a white substrate or background comprising a first area; an ink mixture printed at a first plurality of spatial locations within the first area, the ink mixture printed such that the first area comprises a second plurality of spatial locations without the ink mixture, the ink mixture comprising extender white and Green 7 ink, the ink mixture comprising a volume or weight ratio of 97.5% to 99.75% white extender and 2.5%-0.25% Green 7 ink; in which the first plurality of spatial locations is arranged in a pattern conveying an encoded signal, and in which the white substrate or background and the ink mixture comprise a spectral reflectivity difference at or around 660 nm in a difference range of 8%-30%. Of course, other implementations, methods, packages, systems and apparatus are described in this patent document.

    Machine-readable food packaging film
    38.
    发明授权
    Machine-readable food packaging film 有权

    公开(公告)号：US10074046B2

    公开(公告)日：2018-09-11

    申请号：US15460518

    申请日：2017-03-16

    Applicant: Digimarc Corporation

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

    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.

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