公开(公告)号：US20250103836A1

公开(公告)日：2025-03-27

申请号：US18822371

申请日：2024-09-02

Applicant: Digimarc Corporation

Inventor： Ravi K. Sharma ,  Tomas Denemark ,  Brett A. Bradley ,  Geoffrey B. Rhoads ,  Emma C. Sinclair ,  Vojtech Holub ,  Hugh L. Brunk ,  Trent J. Brundage ,  John F. Stach ,  John D. Lord ,  Joel R. Meyer ,  Tomas Filler ,  Ajith M. Kamath ,  Mark-Andrew Ray Tait ,  Kevin J. Hansonoda ,  Adnan M. Alattar

IPC: G06K7/14

Abstract: The parameters of an optical code are optimized to achieve improved signal robustness, reliability, capacity and/or visual quality. An optimization program can determine spatial density, dot distance, dot size and signal component priority to optimize robustness. An optical code generator employs these parameters to produce an optical code at the desired spatial density and robustness. The optical code is merged into a host image, such as imagery, text and graphics of a package or label, or it may be printed by itself, e.g., on an otherwise blank label or carton. A great number of other features and arrangements are also detailed.

公开(公告)号：US20240104682A1

公开(公告)日：2024-03-28

申请号：US18223352

申请日：2023-07-18

Applicant: Digimarc Corporation

Inventor： Ajith M. Kamath ,  Christopher A. Ambiel ,  Utkarsh Deshmukh ,  Andi R. Castle ,  Christopher M. Haverkate

IPC: G06T1/00 ,  G06F16/18 ,  G06K19/06 ,  G06N3/08 ,  G06T11/20

CPC classification number: G06T1/0092 ,  G06F16/1858 ,  G06K19/06103 ,  G06N3/08 ,  G06T11/20

Abstract: Features from a style image are adapted to express a machine-readable code. For example, grains of rice depicted in a style image may be positioned to create a pattern mimicking that of a machine-readable code. The resulting output image can then be used as a graphical component in product packaging (e.g., as a background, border, or pattern fill), while also serving to convey a product identifier to a compliant reader device (e.g., a retail point-of-sale terminal). In some embodiments, a neural network is trained to apply a particular style image to machine readable codes. A great variety of other features and arrangements are also detailed.

公开(公告)号：US11878327B2

公开(公告)日：2024-01-23

申请号：US17470674

申请日：2021-09-09

Applicant: Digimarc Corporation

Inventor： Ravi K Sharma ,  Tomas Filler ,  Vojtech Holub ,  Osama M. Alattar ,  Hugh L. Brunk ,  John D. Lord ,  Geoffrey B. Rhoads ,  William Y. Conwell ,  Ajith M. Kamath

IPC: B07C5/34 ,  B07C5/342

CPC classification number: B07C5/3412 ,  B07C5/3422 ,  B07C2501/0045

Abstract: A plastic item, such as a beverage bottle, can convey 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 may convey 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 may lack 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. In other embodiments the plastic item (or a label thereon) bears only a single watermark. A great number of other features and arrangements are also detailed.

公开(公告)号：US11704765B2

公开(公告)日：2023-07-18

申请号：US16853327

申请日：2020-04-20

Applicant: Digimarc Corporation

Inventor： Ajith M. Kamath ,  Christopher A. Ambiel ,  Utkarsh Deshmukh

IPC: G06T1/00 ,  G06K19/06 ,  G06T11/20 ,  G06N3/08 ,  G06F16/18

CPC classification number: G06T1/0092 ,  G06F16/1858 ,  G06K19/06103 ,  G06N3/08 ,  G06T11/20

Abstract: Features from a style image are adapted to express a machine-readable code. For example, grains of rice depicted in a style image may be positioned to create a pattern mimicking that of a machine-readable code. The resulting output image can then be used as a graphical component in product packaging (e.g., as a background, border, or pattern fill), while also serving to convey a product identifier to a compliant reader device (e.g., a retail point-of-sale terminal). In some embodiments, a neural network is trained to apply a particular style image to machine readable codes. A great variety of other features and arrangements are also detailed.

公开(公告)号：US20220270199A1

公开(公告)日：2022-08-25

申请号：US17694396

申请日：2022-03-14

Applicant: Digimarc Corporation

Inventor： Tony F. Rodriguez ,  Osama M. Alattar ,  Hugh L. Brunk ,  Joel R. Meyer ,  William Y. Conwell ,  Ajith M. Kamath

IPC: G06T1/00 ,  G06F21/16 ,  G06K9/62 ,  G06V10/24 ,  G06V20/20

Abstract: A sequence of images depicting an object is captured, e.g., by a camera at a point-of-sale terminal in a retail store. The object is identified, such as by a barcode or watermark that is detected from one or more of the images. Once the object's identity is known, such information is used in training a classifier (e.g., a machine learning system) to recognize the object from others of the captured images, including images that may be degraded by blur, inferior lighting, etc. In another arrangement, such degraded images are processed to identify feature points useful in fingerprint-based identification of the object. Feature points extracted from such degraded imagery aid in fingerprint-based recognition of objects under real life circumstances, as contrasted with feature points extracted from pristine imagery (e.g., digital files containing label artwork for such objects). A great variety of other features and arrangements—some involving designing classifiers so as to combat classifier copying—are also detailed.

公开(公告)号：US20220036496A1

公开(公告)日：2022-02-03

申请号：US17405795

申请日：2021-08-18

Applicant: Digimarc Corporation

Inventor： Ajith M. Kamath ,  Fabrice Capiez

IPC: G06T1/00 ,  H04N1/32 ,  G06K7/14

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, a symbology is mimicked as a collage of excerpts from a style image (e.g., a photograph or other artwork). To human viewers, the stylized symbology resembles the style image, rather than the 2D symbology. A great variety of other features and arrangements are also detailed.

公开(公告)号：US11080006B2

公开(公告)日：2021-08-03

申请号：US16665906

申请日：2019-10-28

Applicant: Digimarc Corporation

Inventor： Ravi K. Sharma ,  Shankar Thagadur Shivappa ,  Osama M. Alattar ,  Brett A. Bradley ,  Scott M. Long ,  Ajith M. Kamath ,  Vojtech Holub ,  Hugh L. Brunk ,  Robert G. Lyons ,  Aparna R. Gurijala

IPC: G06F17/00 ,  G06F3/16 ,  G10L19/018 ,  G10L19/02 ,  G10L25/09 ,  G10L25/21

Abstract: Methods and arrangements involving electronic devices, such as smartphones, tablet computers, wearable devices, etc., are disclosed. One arrangement involves a low-power processing technique for discerning cues from audio input. Another involves a technique for detecting audio activity based on the Kullback-Liebler divergence (KLD) (or a modified version thereof) of the audio input. Still other arrangements concern techniques for managing the manner in which policies are embodied on an electronic device. Others relate to distributed computing techniques. A great variety of other features are also detailed.

公开(公告)号：US20210217127A1

公开(公告)日：2021-07-15

申请号：US17126530

申请日：2020-12-18

Applicant: Digimarc Corporation

Inventor： John F. Stach ,  Ravi K. Sharma ,  Ajith M. Kamath

IPC: G06T1/00 ,  G06T11/60 ,  G06T3/20 ,  G06T5/30 ,  G06T5/00 ,  G06K19/06

Abstract: Artwork carrying machine readable data is generated by editing artwork according to a data signal or transforming the data signal into artwork. The machine-readable data signal is generated from a digital payload and converted into an image tile. Artwork is edited according to the image tile by moving graphic elements, adapting intersections of lines, or altering line density, among other techniques. Artwork is generated from the data signal by skeletonizing it and applying morphological operators to a skeletal representation, such as a medial axis transform. Artistic effects are introduced by filtering the data signal with directional blurring or shape filters.

公开(公告)号：US20210073935A1

公开(公告)日：2021-03-11

申请号：US17020307

申请日：2020-09-14

Applicant: Digimarc Corporation

Inventor： John F. Stach ,  Ajith M. Kamath

IPC: 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.

公开(公告)号：US20200311505A1

公开(公告)日：2020-10-01

申请号：US16833178

申请日：2020-03-27

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.