公开(公告)号：US20230316386A1

公开(公告)日：2023-10-05

申请号：US18176700

申请日：2023-03-01

Applicant: Digimarc Corporation

Inventor： Ravi K. Sharma ,  Tomas Filler ,  Utkarsh Deshmukh ,  Vahid Sedighianaraki ,  William Y. Conwell

IPC: G06Q30/0601 ,  G06V10/82 ,  G06F18/214 ,  G06F18/22 ,  G06F18/2431 ,  G06V10/10 ,  G06V10/764 ,  G06V10/774 ,  G06V10/776 ,  G06V10/46 ,  G06V20/00

CPC classification number: G06Q30/0641 ,  G06V10/82 ,  G06F18/214 ,  G06F18/22 ,  G06F18/2431 ,  G06V10/17 ,  G06V10/764 ,  G06V10/774 ,  G06V10/776 ,  G06V10/462 ,  G06V20/00 ,  G06N3/04

Abstract: Aspects of the detailed technologies concern training and use of neural networks for fine-grained classification of large numbers of items, e.g., as may be encountered in a supermarket. Mitigating false positive errors is an exemplary area of emphasis. Novel network topologies are also detailed—some employing recognition technologies in addition to neural networks. A great number of other features and arrangements are also detailed.

公开(公告)号：US11410262B2

公开(公告)日：2022-08-09

申请号：US16557929

申请日：2019-08-30

Applicant: Digimarc Corporation

Inventor： Ravi K. Sharma ,  John D. Lord ,  Robert G. Lyons

IPC: G06T1/00 ,  G06T3/00 ,  G06V10/75 ,  G06F1/02

Abstract: Signal processing devices and methods estimate transforms between signals using a least squares technique. From a seed set of transform candidates, a direct least squares method applies a seed transform candidate to a reference signal and then measures correlation between the transformed reference signal and a suspect signal. For each candidate, update coordinates of reference signal features are identified in the suspect signal and provided as input to a least squares method to compute an update to the transform candidate. The method iterates so long as the update of the transform provides a better correlation. At the end of the process, the method identifies a transform or set of top transforms based on a further analysis of correlation, as well as other results.

公开(公告)号：US11308571B2

公开(公告)日：2022-04-19

申请号：US16579667

申请日：2019-09-23

Applicant: Digimarc Corporation

Inventor： Vojtech Holub ,  Donald Haaga ,  Ravi K. Sharma ,  Jeffrey 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 currently recites an image processing method comprising the acts: receiving a digital representation of artwork, the artwork having an area of uniform color; generating a two-dimensional data signal that redundantly encodes a plural-bit message, the data signal comprising plural elements, each of which has a single bit value; receiving a two-dimensional synchronization signal comprising plural elements, each of which has a plural-bit value, each element of said data signal having an element of the synchronization signal corresponding thereto; processing the two-dimensional data signal with the two-dimensional synchronization signal and with a gradient function to yield a two-dimensional gradient marking signal; and printing an ink counterpart of the gradient marking signal on a medium with the artwork, said printing comprising printing plural dithered two-dimensional blocks of at least four contiguous elements each, in which one or more elements of each block are printed to be dark. Of course, other claims and combinations are described as well.

公开(公告)号：US20210299706A1

公开(公告)日：2021-09-30

申请号：US17214455

申请日：2021-03-26

Applicant: Digimarc Corporation

Inventor： Tomas Filler ,  Vojtech Holub ,  Ravi K. Sharma ,  Tony F. Rodriguez ,  Osama M. Alattar ,  Adnan M. Alattar ,  John D. Lord ,  Brian Johnson ,  David Ruotolo ,  Geoffrey B. Rhoads ,  Hugh L. Brunk ,  Vahid Sedighianaraki

IPC: B07C5/342 ,  H04N5/235 ,  H04N5/225 ,  H04N7/18 ,  G06T1/00 ,  G06K9/62 ,  G06T7/90 ,  G06T7/00 ,  B65G47/49 ,  B07C5/34 ,  G05B13/02

Abstract: Images depicting items in a waste flow on a conveyor belt are provided to two analysis systems. The first system processes images to decode digital watermark payload data found on certain of the items (e.g., plastic containers). This payload data is used to look up corresponding attribute metadata for the items in a database, such as the type of plastic in each item, and whether the item was used as a food container or not. The second analysis system can be a spectroscopy system that determines the type of plastic in each item by its absorption characteristics. When the two systems conflict in identifying the plastic type, a sorting logic processor applies a rule set to arbitrate the conflict and determine which plastic type is most likely. The item is then sorted into one of several different bins depending on a combination of the final plastic identification, and whether the item was used as a food container or not. A 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：US20200226709A1

公开(公告)日：2020-07-16

申请号：US16579667

申请日：2019-09-23

Applicant: Digimarc Corporation

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

IPC: G06T1/00 ,  H04N1/32

Abstract: The present disclosure relates to advanced image processing and encoded signal processing. One claim currently recites an image processing method comprising the acts: receiving a digital representation of artwork, the artwork having an area of uniform color; generating a two-dimensional data signal that redundantly encodes a plural-bit message, the data signal comprising plural elements, each of which has a single bit value; receiving a two-dimensional synchronization signal comprising plural elements, each of which has a plural-bit value, each element of said data signal having an element of the synchronization signal corresponding thereto; processing the two-dimensional data signal with the two-dimensional synchronization signal and with a gradient function to yield a two-dimensional gradient marking signal; and printing an ink counterpart of the gradient marking signal on a medium with the artwork, said printing comprising printing plural dithered two-dimensional blocks of at least four contiguous elements each, in which one or more elements of each block are printed to be dark. Of course, other claims and combinations are described as well.

公开(公告)号：US10664722B1

公开(公告)日：2020-05-26

申请号：US15726290

申请日：2017-10-05

Applicant: Digimarc Corporation

Inventor： Ravi K. Sharma ,  Tomas Filler ,  Utkarsh Deshmukh ,  Vahid Sedighianaraki

IPC: G06K9/62 ,  G06Q30/06 ,  G06N3/04 ,  G06N3/08

Abstract: Aspects of the detailed technologies concern training and use of neural networks for fine-grained classification of large numbers of items, e.g., as may be encountered in a supermarket. Mitigating false positive errors is an exemplary area of emphasis. Novel network topologies are also detailed—some employing recognition technologies in addition to neural networks. A great number of other features and arrangements are also detailed.

公开(公告)号：US20190332840A1

公开(公告)日：2019-10-31

申请号：US16405621

申请日：2019-05-07

Applicant: Digimarc Corporation

Inventor： Ravi K. Sharma ,  Tomas Denemark ,  Brett A. Bradley ,  Geoffrey B. Rhoads ,  Eoin 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：US10438310B2

公开(公告)日：2019-10-08

申请号：US15934036

申请日：2018-03-23

Applicant: Digimarc Corporation

Inventor： Alastair M. Reed ,  Ravi K. Sharma

IPC: G06K9/00 ,  G06T1/00 ,  H04N1/32

Abstract: This disclosure relates generally to image signal processing and data encoding. One claim is directed to a method of decoding encoded data using an orientation pattern having frequency components in different color channels. Of course, other claims and combinations are disclosed in this document.