公开(公告)号：US10853968B2

公开(公告)日：2020-12-01

申请号：US16141587

申请日：2018-09-25

Applicant: Digimarc Corporation

Inventor： Geoffrey B. Rhoads ,  Utkarsh Deshmukh ,  John D. Lord

IPC: G06K9/36 ,  G06T7/73 ,  G06T7/00 ,  G06T1/00 ,  G06T5/00

Abstract: The geometric pose of a patch of watermark data is estimated based on the position of a similar, but non-identical, patch of information within a data structure. The information in the data structure corresponds to a tiled array of calibration patterns that is sampled along at least three non-parallel paths. In a particular embodiment, the calibration patterns are sampled so that edges are globally-curved, yet locally-flat. Use of such information in the data structure enables enhanced pose estimation, e.g., speeding up operation, enabling pose estimation from smaller patches of watermark signals, and/or enabling pose estimation from weaker watermark signals. A great variety of other features and arrangements are also detailed.

公开(公告)号：US20200279084A1

公开(公告)日：2020-09-03

申请号：US16821953

申请日：2020-03-17

Applicant: Digimarc Corporation

Inventor： Bruce L. Davis ,  Tony F. Rodriguez ,  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 C. Calhoon

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. A great variety of other features and arrangements are also detailed.

公开(公告)号：US10713456B2

公开(公告)日：2020-07-14

申请号：US16291366

申请日：2019-03-04

Applicant: Digimarc Corporation

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

IPC: G06K9/00 ,  G06K7/10 ,  G06F16/955 ,  G06K9/20 ,  H04N1/48 ,  H04N1/40 ,  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：US10664946B2

公开(公告)日：2020-05-26

申请号：US15595662

申请日：2017-05-15

Applicant: Digimarc Corporation

Inventor： Ravi K. Sharma ,  John D. Lord

IPC: G06K9/36 ,  G06T3/00 ,  G06T1/00 ,  G06K9/62 ,  G06K9/52

Abstract: A phase deviation method determines an offset between a reference and suspect signal by analyzing a phase deviation surface created by computing a deviation metric for phase shift and then analyzing a surface formed from the deviation metrics for an array of offsets. The phase deviation method analyzes the deviation surface to determine an offset that minimizes phase deviation. This method is applied at increasing levels of detail to refine the determination of the offset.

公开(公告)号：US20190014245A1

公开(公告)日：2019-01-10

申请号：US16036651

申请日：2018-07-16

Applicant: Digimarc Corporation

Inventor： Geoffrey B. Rhoads ,  Hugh L. Brunk ,  John D. Lord

IPC: H04N5/225 ,  H04N9/04 ,  H04N9/73 ,  G01J3/02 ,  G01J3/447 ,  H04N5/235 ,  G01J3/51 ,  G01J3/36 ,  A61B5/00 ,  H04N9/69 ,  G01J3/10 ,  G06K9/46 ,  G06K9/62 ,  G06K9/48 ,  G01J3/28

Abstract: A spectral imaging device is configured to capture color images synchronized with controlled illumination from different color light emitting diodes. A processor in the device applies a coupling factor to sampled color images to convert sampled pixels into spectral channels corresponding to LED color and color filter. Multi-spectral spectricity vectors produced at pixel locations are used along with spatial information to classify objects, such as produce items.

公开(公告)号：US20180308193A1

公开(公告)日：2018-10-25

申请号：US15959992

申请日：2018-04-23

Applicant: Digimarc Corporation

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

IPC: G06T1/00 ,  G06T3/00 ,  G06F1/02 ,  G06K9/62

CPC classification number: G06T1/0064 ,  G06F1/02 ,  G06K9/6206 ,  G06T1/0021 ,  G06T3/0006 ,  G06T3/0056

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：US09990565B2

公开(公告)日：2018-06-05

申请号：US15332262

申请日：2016-10-24

Applicant: Digimarc Corporation

Inventor： Geoffrey B. Rhoads ,  Yang Bai ,  Tony F. Rodriguez ,  Eliot Rogers ,  Ravi K. Sharma ,  John D. Lord ,  Scott Long ,  Brian T. MacIntosh ,  Kurt M. Eaton

IPC: G06K9/00 ,  G06K9/62 ,  G06T15/20 ,  H04N7/18 ,  G06F17/30

CPC classification number: G06K9/6215 ,  G06F17/30247 ,  G06F17/30256 ,  G06F17/30268 ,  G06K9/00 ,  G06K9/00208 ,  G06K9/4671 ,  G06K9/6202 ,  G06K9/6255 ,  G06T15/02 ,  G06T15/20 ,  G06T17/00 ,  H04N7/185

Abstract: Methods and arrangements involving portable user devices such smartphones and wearable electronic devices are disclosed, as well as other devices and sensors distributed within an ambient environment. Some arrangements enable a user to perform an object recognition process in a computationally- and time-efficient manner. Other arrangements enable users and other entities to, either individually or cooperatively, register or enroll physical objects into one or more object registries on which an object recognition process can be performed. Still other arrangements enable users and other entities to, either individually or cooperatively, associate registered or enrolled objects with one or more items of metadata. A great variety of other features and arrangements are also detailed.

公开(公告)号：US20170249491A1

公开(公告)日：2017-08-31

申请号：US15462597

申请日：2017-03-17

Applicant: Digimarc Corporation

Inventor： Brian T. MacIntosh ,  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

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

CPC classification number: G06K7/10861 ,  G06F3/147 ,  G06K7/1456 ,  G06K9/00671 ,  G06K9/18 ,  G06K9/209 ,  G06K9/46 ,  G06K9/78 ,  G06Q10/08 ,  G06Q10/087 ,  G06Q20/201 ,  G06Q20/208 ,  G06Q30/00 ,  G06Q30/0601 ,  G06T2201/0065 ,  G07G1/0045

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：US09692984B2

公开(公告)日：2017-06-27

申请号：US14681832

申请日：2015-04-08

Applicant: Digimarc Corporation

Inventor： John D. Lord

IPC: H04M1/02 ,  H04N5/235 ,  H04M1/725 ,  H04N5/225 ,  H04N9/04 ,  G06F17/30 ,  G06K9/00 ,  G06K9/62 ,  H04N1/00 ,  G06K9/22 ,  H04N1/32 ,  H04N101/00 ,  H04W28/26

CPC classification number: H04N5/2354 ,  G06F17/30244 ,  G06K9/00993 ,  G06K9/228 ,  G06K9/6253 ,  H04M1/0264 ,  H04M1/72572 ,  H04N1/00307 ,  H04N1/32101 ,  H04N5/2256 ,  H04N9/04 ,  H04N2101/00 ,  H04N2201/3225 ,  H04N2201/3274 ,  H04N2201/3278 ,  H04W28/26

Abstract: Disclosed are technologies are useful in enabling a smart phone to respond to a user's environment, e.g., so it can serve as an intuitive hearing and seeing device. Some of the detailed arrangements involve using radio base station SDR equipment (e.g., at a cell tower) to perform image recognition operations for phones; forecasting service needs from remote processors delegating a remote execution task to a service provider chosen in a competitive process; using nearby processors, e.g., in an automobile, another phone, or set-top box, for remote execution tasks; phones with separable camera and/or illumination components; phone camera illumination using different colors of light; using search tree methods with image frames captured at different focuses; using a phone's microprojector to aid in object identification; correcting lens aberrations by texture mapping captured imagery onto a corrective polygon surface using a phone GPU; etc. A great variety of other features are also detailed.

公开(公告)号：US09652821B2

公开(公告)日：2017-05-16

申请号：US14301293

申请日：2014-06-10

Applicant: Digimarc Corporation

Inventor： Ravi K. Sharma ,  John D. Lord

IPC: G06K9/36 ,  G06T3/00 ,  G06T1/00 ,  G06K9/62 ,  G06K9/52

CPC classification number: G06T3/0056 ,  G06K9/522 ,  G06K9/6206 ,  G06T1/0021 ,  G06T1/0064 ,  G06T2201/0065

Abstract: A phase deviation method determines an offset between a reference and suspect signal by analyzing a phase deviation surface created by computing a deviation metric for phase shift and then analyzing a surface formed from the deviation metrics for an array of offsets. The phase deviation method analyzes the deviation surface to determine an offset that minimizes phase deviation. This method is applied at increasing levels of detail to refine the determination of the offset.