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    SIGNALING ARRANGEMENTS EMPLOYING MOLDED THERMOPLASTICS
    63.
    发明申请
    SIGNALING ARRANGEMENTS EMPLOYING MOLDED THERMOPLASTICS 有权

    公开(公告)号：US20230096859A1

    公开(公告)日：2023-03-30

    申请号：US17952066

    申请日：2022-09-23

    Applicant: Digimarc Corporation

    Inventor： Tomas Filler ,  Vojtech Holub

    IPC: B29C49/42 ,  B29C33/38 ,  B29C49/48

    Abstract: A thermoplastic resin is molded to define a container bearing a surface 2D code signal, such as a digital watermark pattern. In some arrangements, the mold dimensions are tailored, and process parameters are selected, so that an indentation in the mold gives rise to a corresponding indentation—rather than a corresponding protrusion—in the shaped plastic. In other arrangements, a metal mold is provided with a patterned resin on its surface to define the 2D code signal. The resin may take the form of a rigid or non-rigid insert that can be removed or re-worked to change the code signal without changing the metal mold. A variety of other improvements and arrangements are also detailed.

    Methods and arrangements for optical code classification
    64.
    发明授权
    Methods and arrangements for optical code classification 有权

    公开(公告)号：US11568165B1

    公开(公告)日：2023-01-31

    申请号：US16849288

    申请日：2020-04-15

    Applicant: Digimarc Corporation

    Inventor： Adnan M. Alattar ,  Vojtech Holub

    IPC: G06K7/14 ,  G06T1/00

    Abstract: An optical code reader classifies a code depicted in input imagery, so that appropriate decoding actions can be invoked. This classification may identify, e.g., (a) whether the code is of a continuous tone or sparse mark variety, (b) which one of different reference signals it includes, and (c) which one of different protocols is used in expressing reference and payload signal components of the code. A great variety of other features and technologies are detailed as well.

    COMPENSATING FOR GEOMETRIC DISTORTION OF IMAGES IN CONSTRAINED PROCESSING ENVIRONMENTS
    65.
    发明申请
    COMPENSATING FOR GEOMETRIC DISTORTION OF IMAGES IN CONSTRAINED PROCESSING ENVIRONMENTS 有权

    公开(公告)号：US20230013037A1

    公开(公告)日：2023-01-19

    申请号：US17828801

    申请日：2022-05-31

    Applicant: Digimarc Corporation

    Inventor： Vojtech Holub

    IPC: G06T5/00 ,  G06T1/00 ,  G06T3/00 ,  G06K7/14

    Abstract: An image processing method determines a geometric transform of a suspect image by efficiently evaluating a large number of geometric transform candidates in environments with limited processing resources. Processing resources are conserved by using complementary methods for determining a geometric transform of an embedded signal. One method excels at higher geometric distortion, and specifically, distortion caused by greater tilt angle of a camera. Another method excels at lower geometric distortion, for weaker signals. Together, the methods provide a more reliable detector of an embedded data signal in image across a larger range of distortion while making efficient use of limited processing resources in mobile devices.

    Detecting conflicts between multiple different encoded signals within imagery, using only a subset of available image data, and robustness checks
    66.
    发明授权
    Detecting conflicts between multiple different encoded signals within imagery, using only a subset of available image data, and robustness checks 有权

    公开(公告)号：US11250535B1

    公开(公告)日：2022-02-15

    申请号：US16988303

    申请日：2020-08-07

    Applicant: Digimarc Corporation

    Inventor： Yang Bai ,  Vojtech Holub ,  Vahid Sedighianaraki

    IPC: G06K7/14 ,  G06T1/00 ,  G06K19/06

    Abstract: This disclosure relates to advanced signal processing technology including signal encoding and digital watermarking. Image areas are selected in an encoded digital design, and corresponding areas from a printed version of the encoded digital design are evaluated to determined signal robustness after printing. One claim recites an image processing method for selecting image areas to test for robustness of encoded signals, the method comprising: obtaining digital artwork comprising a plurality of colors, the digital artwork comprising multiple instances of an encoded signal; selecting a set encoding tiles, and for each encoding tile determining encoding detectability measure associated therewith; creating a bin for each encoding technology used to encode the encoded signal; for each bin, removing any encoding tile having a detectability measure below a predetermined threshold; for each bin, prioritizing remaining encoding tiles; selecting an encoding tile based on the prioritization per bin, and spatially locating the selected encoding tile relative to the digital artwork. Other technology is described in this patent document.

    Detecting conflicts between multiple different encoded signals within imagery, using only a subset of available image data
    67.
    发明授权
    Detecting conflicts between multiple different encoded signals within imagery, using only a subset of available image data 有权

    公开(公告)号：US11250226B2

    公开(公告)日：2022-02-15

    申请号：US17037063

    申请日：2020-09-29

    Applicant: Digimarc Corporation

    Inventor： Vahid Sedighianaraki ,  Vojtech Holub ,  Yang Bai

    IPC: G06K7/14 ,  G06K9/00 ,  G06T1/00 ,  G06K7/10

    Abstract: This disclosure relates to advanced signal processing technology including steganographic embedding and digital watermarking. One combination disclosed in the description includes an apparatus comprising: memory storing an image comprising a plurality of color channels; means for locating image areas including an encoded signal with each color channel of the plurality of color channels, said means for locating identifying a plurality of image areas; means for generating one or more detectability measures corresponding to the encoded signal for each of the plurality of image areas; means for determining whether the encoded signal can be decoded from the plurality of image areas to obtain a plural-bit message component carried therein; means for selecting, per color channel, only one (1) image area as a validation point based on one or more generated detectability measures for that color channel, and based on whether the one (1) image area includes a decodable plural-bit message component; and means for generating information associated with a spatial location of each of the validation points in the image. Of course, other technology, features and combinations are described as well.

    Decoding 1D-barcodes in digital capture systems
    68.
    发明授权
    Decoding 1D-barcodes in digital capture systems 有权

    公开(公告)号：US11244183B2

    公开(公告)日：2022-02-08

    申请号：US16265698

    申请日：2019-02-01

    Applicant: Digimarc Corporation

    Inventor： Brett A. Bradley ,  Tomas Filler ,  Vojtech Holub

    IPC: G06K9/68 ,  G06K9/18 ,  G06T7/00 ,  G06K9/52 ,  G06K9/62 ,  H04N19/44 ,  H04N19/90 ,  H04N19/93

    Abstract: Technology for constructing a symbol template for use by a 1D barcode decoder. One method includes obtaining a first symbol pattern representing a first symbol, the first symbol pattern comprising a plurality of elements, with each element corresponding to a 1D barcode space or bar, in which the first symbol represents one unique 1D bar (b) and space (s) pattern corresponding to a symbol or digit: 0, 1, 2, 3, 4, 5, 6, 7, 8 or 9; obtaining prefix elements, the prefix elements comprising a subset of second symbol elements from a second symbol pattern which precedes the first symbol from within a scanline of image data, the subset being less than a total number of elements within the second symbol elements; extending the first symbol pattern with the prefix elements to yield an overlapping symbol template for use in correlation-based barcode decoding. Other technology provided as well.

    RECYCLING METHODS AND SYSTEMS, AND RELATED PLASTIC CONTAINERS
    69.
    发明申请
    RECYCLING METHODS AND SYSTEMS, AND RELATED PLASTIC CONTAINERS 有权

    公开(公告)号：US20220027590A1

    公开(公告)日：2022-01-27

    申请号：US17393227

    申请日：2021-08-03

    Applicant: Digimarc Corporation

    Inventor： Ravi K. Sharma ,  Tomas Filler ,  Vojtech Holub ,  Osama M. Alattar ,  Hugh L. Brunk ,  John D. Lord ,  Matthew M. Weaver ,  William Y. Conwell

    IPC: G06K7/14 ,  G06T7/00 ,  G06K9/20

    Abstract: A plastic item, such as a beverage bottle, conveys two distinct digital watermarks, encoded using two distinct signaling protocols. A first, printed label watermark conveys a retailing payload, including a Global Trade Item Number (GTIN) used by a point-of-sale scanner in a retail store to identify and price the item when presented for checkout. A second, plastic texture watermark conveys a recycling payload, including data identifying the composition of the plastic. The use of two different signaling protocols assures that a point-of-sale scanner will not spend its limited time and computational resources working to decode the recycling watermark, which lacks the data needed for retail checkout. In some embodiments, a recycling apparatus makes advantageous use of both types of watermarks to identify the plastic composition of the item (e.g., relating GTIN to plastic type using an associated database), thereby increasing the fraction of items that are correctly identified for sorting and recycling. A great number of other features and arrangements are also detailed.

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