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1. 发明授权

US11625805B2 Learning systems and methods 有权
公开(公告)号：US11625805B2
公开(公告)日：2023-04-11
申请号：US17152498
申请日：2021-01-19
申请人： Digimarc Corporation
发明人： Osama M. Alattar
IPC分类号： G06T1/00 , G06F21/16 , G06K9/62 , G06V10/24 , G06V20/20
摘要： 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.

2. 发明授权

US11548310B2 Authenticating identification and security documents and other objects 有权
公开(公告)号：US11548310B2
公开(公告)日：2023-01-10
申请号：US16752250
申请日：2020-01-24
申请人： Digimarc Corporation
发明人： Tony F. Rodriguez , Geoffrey B. Rhoads , Ravi K. Sharma
IPC分类号： B42D25/333 , B42D25/23 , B42D25/00 , B42D25/328 , B41M3/10 , G07D7/12 , G07D7/005 , G07D7/004 , G06V10/10 , G06V10/40 , G06T1/00
摘要： This patent document discloses physical documents including metameric ink pairs. One claim recites a document comprising: a first surface; a second surface, in which the first surface comprises a first set of print structures and a second set of print structures, in which the first set of print structures and the second set of print structures collective convey an encoded signal discernable from optical scan data representing at least a first portion of the first surface, in which the first set of print structures is provided on the first surface with a first ink and the second set of print structures is provided on the first surface with a second, different ink, and in which the first ink and the second, different ink comprise a metameric pair. Of course, other claims and combinations are described as well.

3. 发明申请

US20230005052A1 IMAGERY AND ANNOTATIONS 有权
公开(公告)号：US20230005052A1
公开(公告)日：2023-01-05
申请号：US17866391
申请日：2022-07-15
申请人： Digimarc Corporation
发明人： Bruce L. Davis , Geoffrey B. Rhoads , Tony F. Rodriguez , Edward B. Knudson , William Y. Conwell
IPC分类号： G06Q30/06 , G06T19/00 , G06F16/00
摘要： A decade from now, a visit to the supermarket will be a very different experience than the familiar experiences of decades past. Product packaging will come alive with interactivity—each object a portal into a rich tapestry of experiences, with contributions authored by the product brand, by the store selling the product, and by other shoppers. The present technology concerns arrangements for authoring and delivering such experiences. A great variety of other features and technologies are also detailed.

4. 发明申请

US20230004769A1 METHODS AND ARRANGEMENTS FOR RECONCILING DATA FROM DISPARATE DATA CARRIERS 有权
公开(公告)号：US20230004769A1
公开(公告)日：2023-01-05
申请号：US17867386
申请日：2022-07-18
申请人： Digimarc Corporation
发明人： Eric D. Evans , Christopher M. Haverkate , Mark-Andrew Ray Tait
IPC分类号： G06K19/06 , G06K7/14
摘要： In an illustrative system, a point-of-sale scanner is equipped to respond to multiple different symbologies printed on a single product. The scanner captures many frames per second, as products are swiped through a viewing volume. Each frame is decoded, yielding one or more payloads. A reconciliation module compares each newly-decoded payload against a list of payloads previously output by the module, to determine if the current payload is semantically-equivalent to a previously-output payload. If so, the previously-output payload is output again, in lieu of the just-decoded payload. If no equivalent is found, the current payload is output and added to the list for comparison against future payloads. A great number of other features and arrangements are also detailed.

5. 发明申请

US20220335959A1 MULTI-MODE AUDIO RECOGNITION AND AUXILIARY DATA ENCODING AND DECODING 有权
公开(公告)号：US20220335959A1
公开(公告)日：2022-10-20
申请号：US17532884
申请日：2021-11-22
申请人： Digimarc Corporation
发明人： Ravi K. Sharma , Brett A. Bradley , Yang Bai , Shankar Thagadur Shivappa , Ajith Kamath , Aparna Gurijala , Tomas Filler , David A. Cushman
IPC分类号： G10L19/018 , G10L19/02
摘要： Audio signal processing enhances audio watermark embedding and detecting processes. Audio signal processes include audio classification and adapting watermark embedding and detecting based on classification. Advances in audio watermark design include adaptive watermark signal structure data protocols, perceptual models, and insertion methods. Perceptual and robustness evaluation is integrated into audio watermark embedding to optimize audio quality relative the original signal, and to optimize robustness or data capacity. These methods are applied to audio segments in audio embedder and detector configurations to support real time operation. Feature extraction and matching are also used to adapt audio watermark embedding and detecting.

6. 发明申请

US20220292625A1 PRE-PRESS WARPING ARRANGEMENTS FOR WATERMARKS AND ASSOCIATED GRAPHIC ARTWORKS, WITH RELATED QUALITY CONTROL TECHNIQUES 有权
公开(公告)号：US20220292625A1
公开(公告)日：2022-09-15
申请号：US17713584
申请日：2022-04-05
申请人： Digimarc Corporation
发明人： Hugh L. Brunk , Kristyn R. Falkenstern , Vojtech Holub
IPC分类号： G06T1/00 , G06T3/00 , H04N1/32
摘要： Consumer product labels sometime include 2D machine readable codes, such as digital watermark patterns. When such label artwork is printed on a plastic sleeve that is then heat-shrunk to conform to a plastic container, the code can become distorted and unreadable. Various techniques are detailed to cope with this problem. Additionally, methods are disclosed to assess—before a heat-shrink label is applied to a product—the expected final readability of any machine readable code included in the label artwork. A variety of other features and arrangements are also detailed.

7. 发明授权

US11443400B2 Methods and arrangements for configuring industrial inspection systems 有权
公开(公告)号：US11443400B2
公开(公告)日：2022-09-13
申请号：US16819510
申请日：2020-03-16
申请人： Digimarc Corporation
发明人： Eric D. Evans , Christopher M. Haverkate
IPC分类号： G06T5/00 , G06T1/00 , G06K9/62 , H04N19/91 , G06T5/40 , H04N19/44
摘要： In computer vision systems that need to decode machine-readable indicia from captured imagery, it is critical to select imaging parameters (e.g., exposure interval, exposure aperture, camera gain, intensity and duration of supplemental illumination) that best allow detection of subtle features from imagery. In illustrative embodiments, a Shannon entropy metric or a KL divergence metric is used to guide selection of an optimal set of imaging parameters. In accordance with other aspects of the technology, different strategies identify which spatial locations within captured imagery should be successively examined for machine readable indicia, in order to have a greatest likelihood of success, within a smallest interval of time. A great variety of other features and arrangements are also detailed.

8. 发明申请

US20220284535A1 WATERMARKING ARRANGEMENTS PERMITTING VECTOR GRAPHICS EDITING 有权
公开(公告)号：US20220284535A1
公开(公告)日：2022-09-08
申请号：US17704984
申请日：2022-03-25
申请人： Digimarc Corporation
发明人： Ajith M. Kamath , Christopher A. Ambiel , Geoffrey B. Rhoads , Annalou Vincent , Maxfield T. Torke , Jerry Allen McMahan, JR.
IPC分类号： G06T1/00 , G06T7/90 , G06T11/20 , G06T11/40
摘要： 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.

9. 发明授权

US11410263B1 Methods and arrangements for enhanced digital signal detection 有权
公开(公告)号：US11410263B1
公开(公告)日：2022-08-09
申请号：US16994251
申请日：2020-08-14
申请人： Digimarc Corporation
发明人： Geoffrey B. Rhoads
IPC分类号： G06T1/00 , G06F3/14
摘要： A method for transforming an input array of pixel data into an output array of data, to yield enhanced expression of a digital watermark signal in the output array. One such method includes, for each pixel in the input array, generating a first datum that indicates a value difference between said pixel and a neighboring pixel in a first direction, the first data thereby collectively comprising a first directional difference array. Similarly, for each such pixel in the input array, generating a second datum that indicates a value difference between said pixel and a neighboring pixel in a second direction, the second data thereby collectively comprising a second directional difference array. One or more transforms to a spatial frequency domain are then performed, using these first and second directional difference arrays as input data. First and second results from the one or more transformations are then combined to yield an output array. The just detailed process causes the digital watermark signal in the output array to exhibit a greater signal-to-noise ratio than in the digital watermark signal in the input array. A great number of other features and arrangements are also detailed.

10. 发明授权

US11410261B2 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
申请人： Digimarc Corporation
发明人： John F. Stach , Ajith M. Kamath
IPC分类号： G06K9/00 , G06T1/00
摘要： 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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