公开(公告)号：US20200051200A1

公开(公告)日：2020-02-13

申请号：US16397532

申请日：2019-04-29

Applicant: Digimarc Corporation

Inventor： Trent J. Brundage ,  Vojtech Holub

IPC: G06T1/00

Abstract: This disclosure relates to advanced signal processing technology including signal encoding. One combination includes an apparatus comprising: memory for storing image data, the image data comprising a plurality of color separations or channels, in which the image data comprises at least a first type of machine-readable symbology comprising a 1D barcode represented therein and a second type of machine-readable symbology comprising a first signal represented therein, in which the second type of machine-readable symbology comprises a different type of machine-readable symbology relative to the first type of machine-readable symbology, the 1D barcode comprising a first plural-bit code and the first signal comprising a second plural-bit code; a barcode reader configured to analyze the image data to decode the 1D barcode to obtain the first plural-bit code; a signal decoder configured to analyze one or more color separations or channels of the plurality of color separations or channels to decode the first signal to obtain the second plural-bit code; one or more processors configured to determine whether the second plural-bit code and the first plural-bit code conflict; and to identify a conflict based on a conflict determination. Of course, other features and combinations are described as well.

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

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：US20190306385A1

公开(公告)日：2019-10-03

申请号：US16435292

申请日：2019-06-07

Applicant: Digimarc Corporation

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

IPC: H04N5/225 ,  G06F21/16 ,  H04N21/44 ,  G09C5/00 ,  H04N21/2389 ,  H04N21/8358

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.

公开(公告)号：US10424038B2

公开(公告)日：2019-09-24

申请号：US15072884

申请日：2016-03-17

Applicant: Digimarc Corporation

Inventor： Vojtech Holub ,  Donald Haaga ,  Ravi K. Sharma ,  Jeffery B. Schulte ,  Eric D. Evans

IPC: G06T1/00 ,  H04N1/32 ,  H04N19/467

Abstract: The present disclosure relates to advanced image processing and encoded signal processing. One claim recites an image processing method comprising the acts: receiving a digital representation of product packaging artwork, comprised of pixels; defining a guard band region surrounding text characters included in the artwork, in which a first region encloses the guard band region, and a second region encloses the first region; and altering the artwork to redundantly encode a machine-readable plural-bit payload across different regions of the artwork. The altering only alters the artwork outside of the guard band region, wherein a strength of the encoding has a first value in the first region, and has a second, stronger, value in the second region. Of course, other claims and combinations are described as well.

公开(公告)号：US20180336386A1

公开(公告)日：2018-11-22

申请号：US15893266

申请日：2018-02-09

Applicant: Digimarc Corporation

Inventor： Vojtech Holub ,  Tomas Filler

IPC: G06K7/14 ,  G06K9/62 ,  G06T1/00 ,  G06K9/46

CPC classification number: G06K7/1447 ,  G06K7/1413 ,  G06K7/1452 ,  G06K9/4652 ,  G06K9/6277 ,  G06T1/005 ,  G06T2201/0065

Abstract: The present disclosures relates to finding or localizing machine readable indicia (e.g., a barcode or digital watermark) in imagery. One claim recites an apparatus comprising: memory for buffering blocks of image data, the image data having been captured with a camera and depicting a printed object; one or more processors programmed for: generating an edge orientation sensitive feature set from the image data; using a first trained classifier to determine whether the feature set includes data representing a barcode; and using N additional trained classifiers to determine an orientation angle associated with the barcode, wherein N comprises an integer greater than 3, and wherein the orientation angle is selected based on a probability metric. Of course, other claims and combinations are provided too.

公开(公告)号：US20180130169A1

公开(公告)日：2018-05-10

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: G06T1/00 ,  G07D7/00 ,  G07D7/1205 ,  G06K7/12 ,  G06K19/06

CPC classification number: G06T1/0021 ,  B42D25/333 ,  G06K7/12 ,  G06K19/06056 ,  G06K19/0614 ,  G07D7/00 ,  G07D7/0034 ,  G07D7/1205

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.

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

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

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.

公开(公告)号：US09754341B2

公开(公告)日：2017-09-05

申请号：US15073483

申请日：2016-03-17

Applicant: Digimarc Corporation

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

IPC: G06K7/14 ,  G06T1/00 ,  G06K7/12 ,  G06K19/06 ,  G07D7/00 ,  G07D7/1205 ,  B42D25/333

CPC classification number: G06T1/0021 ,  B42D25/333 ,  G06K7/12 ,  G06K19/06056 ,  G06K19/0614 ,  G07D7/00 ,  G07D7/0034 ,  G07D7/1205

Abstract: The present disclosure relates to signal processing such as 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.

公开(公告)号：US09716807B2

公开(公告)日：2017-07-25

申请号：US14881448

申请日：2015-10-13

Applicant: Digimarc Corporation

Inventor： Vojtech Holub ,  Tomas Filler

IPC: H04N1/40 ,  H04L9/32 ,  H04N1/32 ,  G06T1/00

CPC classification number: H04N1/32149 ,  G06T1/0028 ,  G06T2201/0202

Abstract: The present disclosure relates to advanced signal processing including digital watermarking and steganography. One method includes: obtaining image data representing imagery in a first color mode; steganographically embedding a watermark signal into the image data, thereby generating watermarked image data; obtaining reader data representing an input color mode of a reader configured to detect or decode the watermarked image data, wherein the input color mode is different from the first color mode; transforming the watermarked image data from the first color mode to the input color mode; estimating a signal strength of the watermark signal within the transformed watermark image data; and visually displaying the estimated signal strength. The estimated signal strength can be visually displayed as a multi-color heat map. Of course, other combinations are described as well.

公开(公告)号：US12217108B2

公开(公告)日：2025-02-04

申请号：US18077914

申请日：2022-12-08

Applicant: Digimarc Corporation

Inventor： Tomas Filler ,  Vojtech Holub ,  Hugh L. Brunk ,  Adnan M. Alattar

IPC: G06K19/06

Abstract: A surface is laser-etched to convey a 2D machine-readable code pattern. Various strategies are detailed to minimize the etching time. Some strategies include modifying the code pattern to reduce a path length traveled by the laser. Some strategies include modifying the code pattern to make it sub-optimal, i.e., making the code pattern a less-faithful approximation of an ideal code pattern. In some embodiments the etched surface is the surface of a plastic container, and the code pattern conveys information indicating the type of plastic of which the container is manufactured. A variety of other features and arrangements are also detailed.