公开(公告)号：US10223560B2

公开(公告)日：2019-03-05

申请号：US15687153

申请日：2017-08-25

Applicant: Digimarc Corporation

Inventor： Jacob L. Boles ,  Alastair M. Reed ,  John D. Lord

IPC: G06K9/00 ,  G06K7/10 ,  G06K9/20 ,  H04N1/48 ,  H04N1/40 ,  G06F17/30 ,  G06K7/12 ,  H04N5/225 ,  H04N9/73 ,  G06K7/14 ,  H04N5/33

Abstract: Signal detection and recognition employees coordinated illumination and capture of images under to facilitate extraction of a signal of interest. Pulsed illumination of different colors facilitates extraction of signals from color channels, as well as improved signal to noise ratio by combining signals of different color channels. The successive pulsing of different color illumination appears white to the user, yet facilitates signal detection, even for lower cost monochrome sensors, as in barcode scanning and other automatic identification equipment.

公开(公告)号：US20180376027A1

公开(公告)日：2018-12-27

申请号：US15985262

申请日：2018-05-21

Applicant: Digimarc Corporation

Inventor： Geoffrey B. Rhoads ,  Alastair M. Reed

IPC: H04N1/32 ,  H05B37/02 ,  H05B33/08 ,  G01J3/02 ,  G01J3/28 ,  H04N21/8358 ,  H04N9/04 ,  H04N5/235 ,  H04N5/225 ,  G06T1/00 ,  G01J3/51 ,  G01J3/447 ,  G01J3/36 ,  A61B5/00

Abstract: Information is encoded in an image signal by exploiting spectral differences between colors that appear the same when rendered. These spectral differences are detected using image sensing that discerns the spectral differences. Spectral difference detection methods include using sensor-synchronized spectrally-structured-light imaging, 3D sensors, imaging spectrophotometers, and higher resolution Bayer pattern capture relative to resolution of patches used to convey a spectral difference signal.

公开(公告)号：US10074046B2

公开(公告)日：2018-09-11

申请号：US15460518

申请日：2017-03-16

Applicant: Digimarc Corporation

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

IPC: G06K19/06 ,  G06K7/10

CPC classification number: G06K19/06037 ,  G06K7/1095

Abstract: In one embodiment, a sidewalk-facing display window of a retail store is treated to scatter (or absorb) a portion of incident light, in a narrow wavelength spectral band. A machine-readable pattern, which encodes an identifier, is projected onto the treated window from outside the store. The reflection (absorption) of that projected pattern, within the narrow spectral band, escapes notice of shoppers on the sidewalk. Yet if a shopper captures imagery of a product displayed on the other side of the display window, using a mobile device camera, the pattern is captured with the imagery, and can be analyzed to decode the identifier. The mobile device can use this decoded identifier to access online information about the displayed product, for presentation to the shopper on the mobile device display. The technology is particularly suited for wearable computing devices, and more generally enables glass windows to subliminally convey digital information to image sensors conveyed by passing shoppers. A great variety of other features and arrangements are also detailed.

公开(公告)号：US20180174620A1

公开(公告)日：2018-06-21

申请号：US15823168

申请日：2017-11-27

Applicant: Digimarc Corporation

Inventor： Bruce L. Davis ,  Tony F. Rodriguez ,  Geoffrey B. Rhoads ,  William Y. Conwell ,  Jerrine K. Owen ,  Adnan M. Alattar ,  Eliot Rogers ,  Brett A. Bradley ,  Alastair M. Reed ,  Robert Craig Brandis

IPC: G11B27/34 ,  H05B37/02 ,  G06F3/0485 ,  H04W8/22 ,  H04N5/77 ,  H04N5/235 ,  H04N5/232 ,  H04M1/02 ,  H04W4/50 ,  G06T1/00 ,  G06Q30/02 ,  G06K9/62 ,  G06K7/14 ,  G06F3/0482 ,  H04W4/80 ,  H04W4/18

CPC classification number: G11B27/34 ,  G06F3/0482 ,  G06F3/0485 ,  G06K7/1443 ,  G06K9/6217 ,  G06Q30/0269 ,  G06T1/0021 ,  G06T1/0064 ,  G06T2201/0052 ,  H04M1/0264 ,  H04N5/23293 ,  H04N5/235 ,  H04N5/77 ,  H04W4/18 ,  H04W4/50 ,  H04W4/80 ,  H04W8/22 ,  H05B37/0218 ,  H05B37/0236

Abstract: Arrangements involving portable devices (e.g., smartphones and tablet computers) are disclosed. One arrangement enables a content creator to select software with which that creator's content should be rendered—assuring continuity between artistic intention and delivery. Another utilizes a device camera to identify nearby subjects, and take actions based thereon. Others rely on near field chip (RFID) identification of objects, or on identification of audio streams (e.g., music, voice). Some technologies concern improvements to the user interfaces associated with such devices. Others involve use of these devices in connection with shopping, text entry, sign language interpretation, and vision-based discovery. Still other improvements are architectural in nature, e.g., relating to evidence-based state machines, and blackboard systems. Yet other technologies concern use of linked data in portable devices—some of which exploit GPU capabilities. Still other technologies concern computational photography. A great variety of other features and arrangements are also detailed.

公开(公告)号：US20180131837A1

公开(公告)日：2018-05-10

申请号：US15670863

申请日：2017-08-07

Applicant: Digimarc Corporation

Inventor： Kristyn R. Falkenstern ,  Alastair M. Reed

IPC: H04N1/32 ,  G06K19/06 ,  G06T1/00 ,  H04N1/028 ,  H04N1/48

CPC classification number: H04N1/32309 ,  G06K19/06009 ,  G06T1/0028 ,  G06T2201/0051 ,  H04N1/02805 ,  H04N1/02845 ,  H04N1/482 ,  H04N2201/3226 ,  H04N2201/327

Abstract: The present disclosure relates generally to digital watermarking for retail product packaging. A digital watermark can be carried in different color channels, and at with different signal polarities. Detection can utilize different illumination sources or image sensors with various filters to highlight signal in one or more of the channels.

公开(公告)号：US20180122035A1

公开(公告)日：2018-05-03

申请号：US15798046

申请日：2017-10-30

Applicant: Digimarc Corporation

Inventor： Alastair M. Reed ,  Kristyn R. Falkenstern ,  David Berfanger ,  Yang Bai

IPC: G06T1/00

CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0083 ,  G06T2201/0202 ,  H04N1/32309 ,  H04N1/6005 ,  H04N2201/3233

Abstract: The present disclosure relate generally to image signal processing, color science and signal encoding. Signal encoding can be applied to color image data through use of a luminance contrast sensitivity function and a chrominance contrast sensitive function. Of course, other features, combinations and claims are disclosed as well.

公开(公告)号：US09940685B2

公开(公告)日：2018-04-10

申请号：US14924449

申请日：2015-10-27

Applicant: Digimarc Corporation

Inventor： Alastair M. Reed ,  Trent J. Brundage

IPC: G06T1/00 ,  H04N1/32

CPC classification number: G06T1/0042 ,  G06T1/0028 ,  G06T1/0085 ,  G06T2201/0051 ,  H04N1/32144 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32251 ,  H04N1/32288 ,  H04N1/32293 ,  H04N1/32309 ,  H04N2201/327

Abstract: The present disclosure relates to digital watermarking. One claim recites a method to detect two or more different digital watermarks in media. The method includes: receiving captured imagery of the media, the captured imagery comprising a plurality of image frames; for a first image frame applying a first watermark detector to search for a first digital watermark hidden within the first image frame, in which an electronic processor is programmed as the first watermark detector; and for a second image frame applying a second, different watermark detector to search for a second, different watermark hidden within the second image frame, in which an electronic processor is programmed as the second watermark detector. Other claims and combinations are provided too.

公开(公告)号：US09940684B2

公开(公告)日：2018-04-10

申请号：US14869365

申请日：2015-09-29

Applicant: Digimarc Corporation

Inventor： Alastair M. Reed ,  Brett A. Bradley

IPC: H04M1/00 ,  G06T1/00 ,  H04N5/232 ,  H04N5/235

CPC classification number: G06T1/0021 ,  G06T2201/0065 ,  H04N5/23293 ,  H04N5/2351 ,  H04N5/2354

Abstract: The disclosure relates to image signal processing, encoded signals and fingerprinting. Lighting information, associated with image capture, is used to adapt a signal encoder to fingerprint generator. The encoder or generator can be adapted by applying different weightings to different color channels, the different weightings being associated with the lighting information.

公开(公告)号：US09928560B2

公开(公告)日：2018-03-27

申请号：US15605904

申请日：2017-05-25

Applicant: Digimarc Corporation

Inventor： Alastair M. Reed ,  Ravi K. Sharma

IPC: G06K9/00 ,  G06T1/00 ,  H04N1/32

CPC classification number: G06T1/0028 ,  G06K9/00 ,  G06T1/0021 ,  G06T1/005 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0601 ,  H04N1/32309

Abstract: The present invention relate generally to signal encoding and decoding. One claim recites a method comprising: obtaining color image data or color video data, the color image data or color video data comprising an encoded signal pattern, the encoded signal pattern aiding detection of an encoded message, the pattern comprising first frequency components and second frequency components, the color image data or color video data comprising first color data and second color data, in which the first color data comprises the first frequency components encoded therein, and the second color data comprises the second frequency components encoded therein; combining the first color data and the second color data, said combining yielding combined color data; utilizing one or more processors or electronic processing circuitry, detecting the encoded signal pattern from the combined color data, said detecting yielding rotation and scale information; and using the rotation and scale information to detect the encoded message from the combined color data. Of course, other combinations and claims are provided too.

公开(公告)号：US20170339302A1

公开(公告)日：2017-11-23

申请号：US15484035

申请日：2017-04-10

Applicant: Digimarc Corporation

Inventor： Geoffrey B. Rhoads ,  Alastair M. Reed

IPC: H04N1/32 ,  H05B33/08 ,  G01J3/02 ,  G01J3/28 ,  H04N21/8358 ,  H04N5/235 ,  H04N5/225 ,  G06T1/00 ,  G01J3/51 ,  G01J3/447 ,  G01J3/36 ,  H05B37/02 ,  H04N9/04 ,  A61B5/00

CPC classification number: H04N1/32309 ,  A61B5/0075 ,  G01J3/0272 ,  G01J3/2823 ,  G01J3/36 ,  G01J3/447 ,  G01J3/51 ,  G01J3/513 ,  G06T1/0028 ,  G06T2201/0051 ,  H04N1/32144 ,  H04N5/2254 ,  H04N5/2256 ,  H04N5/2354 ,  H04N9/045 ,  H04N21/8358 ,  H04N2201/3233 ,  H05B33/0869 ,  H05B37/0272

Abstract: Information is encoded in an image signal by exploiting spectral differences between colors that appear the same when rendered. These spectral differences are detected using image sensing that discerns the spectral differences. Spectral difference detection methods include using sensor-synchronized spectrally-structured-light imaging, 3D sensors, imaging spectrophotometers, and higher resolution Bayer pattern capture relative to resolution of patches used to convey a spectral difference signal.