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公开(公告)号：US11288764B2
公开(公告)日：2022-03-29
申请号：US16918809
申请日：2020-07-01
Applicant: Digimarc Corporation
Inventor： Ajith M. Kamath , Christopher A. Ambiel , Geoffrey B. Rhoads , Annalou Vincent , Maxfield T. Torke , Jerry Allen McMahan, Jr.
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.
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12.发明授权公开(公告)号：US11037038B2
公开(公告)日：2021-06-15
申请号：US16833178
申请日：2020-03-27
Applicant: Digimarc Corporation
Inventor： Ajith M. Kamath
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.
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公开(公告)号：US20210004930A1
公开(公告)日：2021-01-07
申请号：US16918809
申请日：2020-07-01
Applicant: Digimarc Corporation
Inventor： Ajith M. Kamath , Christopher A. Ambiel , Geoffrey B. Rhoads , Annalou Vincent , Maxfield T. Torke , Jerry Allen McMahan, JR.
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.
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公开(公告)号：US10776894B2
公开(公告)日：2020-09-15
申请号：US16247459
申请日：2019-01-14
Applicant: Digimarc Corporation
Inventor： John F. Stach , Ajith M. Kamath
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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15.发明授权公开(公告)号：US10459685B2
公开(公告)日：2019-10-29
申请号：US15893127
申请日：2018-02-09
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
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.
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Patent Agency Ranking
公开(公告)号：US20180047125A1
公开(公告)日：2018-02-15
申请号：US15687332
申请日：2017-08-25
Applicant: Digimarc Corporation
Inventor： John Stach , Ajith M. Kamath
IPC: G06T1/00
CPC classification number: G06T1/005 , G06T1/0028 , G06T1/0064 , G06T2201/0061 , G06T2201/0065 , G06T2201/0202
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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17.发明授权公开(公告)号：US09891883B2
公开(公告)日：2018-02-13
申请号：US15192925
申请日：2016-06-24
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
CPC classification number: G06F3/165 , G10L19/018 , G10L19/0212 , 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.
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18.发明授权公开(公告)号：US12136137B2
公开(公告)日：2024-11-05
申请号：US17405795
申请日：2021-08-18
Applicant: Digimarc Corporation
Inventor： Ajith M. Kamath , Fabrice Capiez
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.
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公开(公告)号：US20230325960A1
公开(公告)日：2023-10-12
申请号：US18181502
申请日：2023-03-09
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 , G06V10/24 , G06V20/20 , G06F18/214 , G06F18/2413 , G06V10/774
CPC classification number: G06T1/0021 , G06F21/16 , G06V10/245 , G06V20/20 , G06F18/214 , G06F18/2155 , G06F18/2413 , G06V10/774 , G06V10/7753
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.
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20.发明申请公开(公告)号：US20220351322A1
公开(公告)日：2022-11-03
申请号：US17694278
申请日：2022-03-14
Applicant: Digimarc Corporation
Inventor： Ajith M. Kamath
Abstract: Optical code signal components are generated and then transformed into signal bearing art that conveys machine readable data. The components 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 transforms tiles of an optical code or image embedded with the optical code into signal-bearing art using stipple, Voronoi, Delaunay or other graphic drawing methods so as to retain prioritized components of the optical code. 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.
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