公开(公告)号：US11657469B2

公开(公告)日：2023-05-23

申请号：US17358873

申请日：2021-06-25

Applicant: Digimarc Corporation

Inventor： Alastair M. Reed ,  Kristyn R. Falkenstern

IPC: G06T1/00

CPC classification number: G06T1/005 ,  G06T1/0028 ,  G06T2201/0053 ,  G06T2201/0061

Abstract: The present disclosure relates generally to signal encoding for printed objects. One implementation selects an embed direction based on a minimal visibility axis of a 1 JND ellipse at a certain color center. One claim recites an apparatus comprising: memory for storing chromatic contrast sensitivity data representing multiple color encoding angles; one or more multi-core processors configured for: using the stored chromatic contrast sensitivity data, generating an ellipse around a first color center; and from the ellipse, determining a signal encode direction, the signal encode direction comprising an angle α representing a negative angle between the ‘a*’ axis in an CIELAB space and a direction of minimum sensitivity of an encoded signal, in which the angle α comprises −9 degrees≥α≥−25 degrees. Other technology described.

公开(公告)号：US20220335740A1

公开(公告)日：2022-10-20

申请号：US17683021

申请日：2022-02-28

Applicant: Digimarc Corporation

Inventor： Alastair M. Reed ,  Tomas Filler ,  Kristyn R. Falkenstern ,  Yang Bai

IPC: G06V30/224 ,  G06T7/90 ,  G06V10/56 ,  G06K19/06 ,  G06T1/00 ,  H04N1/32 ,  H04N1/60 ,  H04N1/62

Abstract: The present disclosure relates generally to data hiding for retail product packaging and other printed objects such as substrates. One embodiment embeds an information signal in a spot color for printing on various substrates. The spot color is screened, and overprinted with process color tint. The tint is modulated prior to overprinting with optimized signal tweaks. The optimization can include consideration of a detector spectral dependency (e.g., red and/or green illumination). Many other embodiments and combinations are described in the subject patent document.

公开(公告)号：US20220335561A1

公开(公告)日：2022-10-20

申请号：US17589762

申请日：2022-01-31

Applicant: Digimarc Corporation

Inventor： Tomas Filler ,  Alastair M. Reed ,  John F. Stach

IPC: G06T1/00 ,  G06T7/73 ,  G06T7/246

Abstract: Image processing technology embeds signal (e.g., digital watermarks) within imagery during a raster image process(or). One claim recites: an image processing method of embedding a signal within imagery using a raster image processing (RIP), comprising: obtaining a plurality of elements representing a signal; and modulating a plurality of print structures within the RIP according to the plurality of elements, in which said modulating varies density, and direction or angle, of the plurality of print structures, and in which said modulating introduces the signal within the imagery. Of course, other claims, combinations and technology are described too.

公开(公告)号：US20220261567A1

公开(公告)日：2022-08-18

申请号：US17692492

申请日：2022-03-11

Applicant: Digimarc Corporation

Inventor： Tony F. Rodriguez ,  Bruce L. Davis ,  Geoffrey B. Rhoads ,  John D. Lord ,  Alastair M. Reed ,  Eric D. Evans ,  Rebecca L. Gerlach ,  Yang Bai ,  John F. Stach ,  Tomas Filler ,  Marc G. Footen ,  Sean Calhoon ,  William Y. Conwell ,  Brian T. MacIntosh

IPC: G06K7/10 ,  G06Q10/08 ,  G06Q20/20 ,  G06Q30/00 ,  G06V10/10 ,  G06V10/147 ,  G06V20/20 ,  G06V30/224 ,  G07G1/00 ,  G06K7/14

Abstract: In some arrangements, product packaging is digitally watermarked over most of its extent to facilitate high-throughput item identification at retail checkouts. Imagery captured by conventional or plenoptic cameras can be processed (e.g., by GPUs) to derive several different perspective-transformed views—further minimizing the need to manually reposition items for identification. Crinkles and other deformations in product packaging can be optically sensed, allowing such surfaces to be virtually flattened to aid identification. Piles of items can be 3D-modelled and virtually segmented into geometric primitives to aid identification, and to discover locations of obscured items. Other data (e.g., including data from sensors in aisles, shelves and carts, and gaze tracking for clues about visual saliency) can be used in assessing identification hypotheses about an item. Logos may be identified and used—or ignored—in product identification. A great variety of other features and arrangements are also detailed.

公开(公告)号：US11263829B2

公开(公告)日：2022-03-01

申请号：US16825444

申请日：2020-03-20

Applicant: Digimarc Corporation

Inventor： Alastair M. Reed ,  Tomas Filler ,  Kristyn R. Falkenstern ,  Yang Bai

IPC: G06K9/18 ,  H04N1/60 ,  G06T7/90 ,  G06V30/224 ,  H04N1/32 ,  G06T1/00 ,  H04N1/62 ,  G06V10/56 ,  G06K19/06

Abstract: The present document provides image processing methods and apparatus. One claim recites: obtaining a signal to be encoded in color image data, the signal comprising a plural-bit payload; predicting a resulting color of overprinting several inks on a substrate, the overprinting representing the color image data encoded with the signal; using the resulting color for both i) visibility evaluation of the overprinting, and ii) signal robustness evaluation of the overprinting as seen by an imaging device. Other claims and combinations are provided.

公开(公告)号：US20210192162A1

公开(公告)日：2021-06-24

申请号：US17142928

申请日：2021-01-06

Applicant: Digimarc Corporation

Inventor： Tony F. Rodriguez ,  Bruce L. Davis ,  Geoffrey B. Rhoads ,  John D. Lord ,  Alastair M. Reed ,  Eric D. Evans ,  Rebecca L. Gerlach ,  Yang Bai ,  John F. Stach ,  Tomas Filler ,  Marc G. Footen ,  Sean Calhoon ,  William Y. Conwell ,  Brian T. MacIntosh

IPC: G06K7/10 ,  G06K7/14 ,  G06K9/18 ,  G06K9/20 ,  G06K9/78 ,  G06Q30/00 ,  G07G1/00 ,  G06Q20/20 ,  G06K9/00 ,  G06Q10/08

Abstract: In some arrangements, product packaging is digitally watermarked over most of its extent to facilitate high-throughput item identification at retail checkouts. Imagery captured by conventional or plenoptic cameras can be processed (e.g., by GPUs) to derive several different perspective-transformed views—further minimizing the need to manually reposition items for identification. Crinkles and other deformations in product packaging can be optically sensed, allowing such surfaces to be virtually flattened to aid identification. Piles of items can be 3D-modelled and virtually segmented into geometric primitives to aid identification, and to discover locations of obscured items. Other data (e.g., including data from sensors in aisles, shelves and carts, and gaze tracking for clues about visual saliency) can be used in assessing identification hypotheses about an item. Logos may be identified and used—or ignored—in product identification. A great variety of other features and arrangements are also detailed.

公开(公告)号：US10460161B1

公开(公告)日：2019-10-29

申请号：US15597086

申请日：2017-05-16

Applicant: Digimarc Corporation

Inventor： Stephen A. Lauer ,  Jeremy Cattone ,  Alastair M. Reed ,  Kristyn R. Falkenstern

IPC: G06K9/00

Abstract: Advanced signal processing technology including signal encoding and digital watermarking. Disclosure includes monitoring spectral differences within control strip area to determine signal robustness of encoded signals printed outside of control strip area. Other combinations and technology provided too.

公开(公告)号：US10453163B2

公开(公告)日：2019-10-22

申请号：US16041544

申请日：2018-07-20

Applicant: Digimarc Corporation

Inventor： Alastair M. Reed

IPC: G06K9/00 ,  G06T1/00 ,  H04N9/68 ,  G06T7/90 ,  H04B1/3827

Abstract: The present disclosure relates generally to signal processing, including processing digital watermarking. One claim recites a detector apparatus comprising: memory for storing data representing color image data comprising red color data and green color data, in which the red color data comprises digital watermarking including a first polarity and the green color data comprises the digital watermarking including a second polarity that is inversely related to the first polarity; means for selectively weighting the red color data and the green color data so that the digital watermarking is emphasized while image content is de-emphasized when weighted red color data and weighted green color data are combined; means for detecting the digital watermarking from combined, weighted red color data and weighted green color data; and more or more processors configured for outputting data corresponding to detected digital watermarking. Of course, different combinations and claims are provided too.

公开(公告)号：US10445849B1

公开(公告)日：2019-10-15

申请号：US16119410

申请日：2018-08-31

Applicant: Digimarc Corporation

Inventor： Alastair M. Reed ,  Kristyn R. Falkenstern

IPC: G06K9/00 ,  G06T1/00 ,  B41M3/14 ,  H04N1/32 ,  B41M3/10

Abstract: This disclosure relates to advanced image signal processing technology including encoded signals and digital watermarking. One implementation is directed to a printed object comprising: a white substrate or background comprising a first area; an ink mixture printed at a first plurality of spatial locations within the first area, the ink mixture printed such that the first area comprises a second plurality of spatial locations without the ink mixture, the ink mixture comprising extender white and Green 7 ink, the ink mixture comprising a volume or weight ratio of 97.5% to 99.75% white extender and 2.5%-0.25% Green 7 ink; in which the first plurality of spatial locations is arranged in a pattern conveying an encoded signal, and in which the white substrate or background and the ink mixture comprise a spectral reflectivity difference at or around 660 nm in a difference range of 8%-30%. Of course, other implementations, methods, packages, systems and apparatus are described in this patent document.

公开(公告)号：US10304151B2

公开(公告)日：2019-05-28

申请号：US15669103

申请日：2017-08-04

Applicant: Digimarc Corporation

Inventor： Kristyn R. Falkenstern ,  Alastair M. Reed ,  Vojtech Holub ,  Tony F. Rodriguez

IPC: G06K19/06 ,  G06T1/00 ,  G06K7/12 ,  G07D7/00 ,  G07D7/1205 ,  B42D25/333

Abstract: The present disclosure relates to signal processing such as image processing, signal encoding, digital watermarking and data hiding. A sparse or dense digital watermark signal can be conveyed with a narrow-band absorption material corresponding to a center wavelength of a Point of Sale (POS) barcode scanner. The POS barcode scanner typically captures 2D imagery. Since the narrow-band absorption material absorbs over a narrow-band it is relatively imperceptible to the Human Visual System (HVS) but can be seen by the POS scanner.