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    Artwork generated to convey digital messages, and methods/apparatuses for generating such artwork
    3.
    发明授权
    Artwork generated to convey digital messages, and methods/apparatuses for generating such artwork 有权

    公开(公告)号：US11514285B2

    公开(公告)日：2022-11-29

    申请号：US17343497

    申请日：2021-06-09

    Applicant: Digimarc Corporation

    Inventor： Ajith M. Kamath

    IPC: G06K19/06 ,  G06K1/12

    Abstract: 2D machine readable symbologies are stylized and made aesthetically-appealing, facilitating their use to convey plural-symbol data on product packaging and other articles. In some arrangements, symbologies are stylized by geometric transformations (e.g., by multiple rotation and/or mirroring operations) to develop tiles having organized geometric structures. Such stylized symbologies can be decoded by existing code readers. A great variety of other features and arrangements are also detailed.

    2D MACHINE-READABLE CODE COUNTERPARTS, AND METHODS
    4.
    发明申请
    2D MACHINE-READABLE CODE COUNTERPARTS, AND METHODS 有权

    公开(公告)号：US20220138892A1

    公开(公告)日：2022-05-05

    申请号：US17516464

    申请日：2021-11-01

    Applicant: Digimarc Corporation

    Inventor： Ajith M. Kamath

    IPC: G06T1/00 ,  G06T11/60 ,  G06T11/40

    Abstract: In one aspect, a 2D machine readable code is mimicked by a collection of graphic elements. This can involve choosing a location, within an input 2D code block, at which correlation between a first graphic element and the input 2D code block is maximized. An area around this location is then disqualified from further consideration. A second location is next chosen, within the input 2D code block but outside the disqualified area, at which correlation between a second graphic element and the input 2D code block is maximized. The process continues in this fashion, adding graphics and removing additional areas from consideration, until a threshold number of graphic elements has been placed. The elements are then assembled in their corresponding locations to yield a composite image block that provides features mimicking that of the input 2D code block, thereby enabling the composite image block to be decoded by a compliant code reader. A great variety of other signal rich art arrangements are also detailed.

    Mimicked machine-readable codes, and methods
    7.
    发明授权
    Mimicked machine-readable codes, and methods 有权

    公开(公告)号：US12205190B2

    公开(公告)日：2025-01-21

    申请号：US17516464

    申请日：2021-11-01

    Applicant: Digimarc Corporation

    Inventor： Ajith M. Kamath

    IPC: G06K9/00 ,  G06T1/00 ,  G06T11/40 ,  G06T11/60

    Abstract: In one aspect, a 2D machine readable code is mimicked by a collection of graphic elements. This can involve choosing a location, within an input 2D code block, at which correlation between a first graphic element and the input 2D code block is maximized. An area around this location is then disqualified from further consideration. A second location is next chosen, within the input 2D code block but outside the disqualified area, at which correlation between a second graphic element and the input 2D code block is maximized. The process continues in this fashion, adding graphics and removing additional areas from consideration, until a threshold number of graphic elements has been placed. The elements are then assembled in their corresponding locations to yield a composite image block that provides features mimicking that of the input 2D code block, thereby enabling the composite image block to be decoded by a compliant code reader. A great variety of other signal rich art arrangements are also detailed.

    Watermarking arrangements permitting vector graphics editing
    8.
    发明授权
    Watermarking arrangements permitting vector graphics editing 有权

    公开(公告)号：US12073487B2

    公开(公告)日：2024-08-27

    申请号：US17704984

    申请日：2022-03-25

    Applicant: Digimarc Corporation

    Inventor： Ajith M. Kamath

    IPC: G06T1/00 ,  G06T7/90 ,  G06T11/20 ,  G06T11/40

    CPC classification number: G06T1/0028 ,  G06T7/90 ,  G06T11/203 ,  G06T11/40

    Abstract: A vector graphics file includes at least one artwork layer and at least one watermark layer. The watermark layer comprises a pattern of vector graphics primitives, each of which is filled with a color that is a tinted variant of the color of the location in the artwork that the primitive overlies. Such layered arrangement enables the watermark to be added or omitted, and varied in strength, payload and appearance, at will. Yet the artwork is left unchanged through such manipulations. In some embodiments the watermark conveys a multi-symbol Global Trade Item Number (GTIN), and the file is used to generate a label or packaging for a food or general merchandise retail item. A great number of other arrangements, features and advantages are also detailed.

    Differential modulation for robust signaling and synchronization
    10.
    发明授权
    Differential modulation for robust signaling and synchronization 有权

    公开(公告)号：US11410261B2

    公开(公告)日：2022-08-09

    申请号：US17020307

    申请日：2020-09-14

    Applicant: Digimarc Corporation

    Inventor： John F. Stach ,  Ajith M. Kamath

    IPC: G06K9/00 ,  G06T1/00

    Abstract: Differential modulation schemes encode a data channel within host signal or noisy environment in a manner that is robust, flexible to achieve perceptual quality constraints, and provides improved data capacity. Differential arrangements enable a decoder to suppress host signal or other background signal interference when detecting, synchronizing and extracting an encoded data channel. They also enable the incorporation of implicit or explicit synchronization components, which are either formed from the data signal or are complementary to it.

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