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公开(公告)号：US20190385034A1
公开(公告)日：2019-12-19
申请号：US16444959
申请日：2019-06-18
Applicant: Digimarc Corporation
Inventor： Eric D. Evans , Christopher M. Haverkate , Mark-Andrew Ray Tait
Abstract: In an illustrative system, a point-of-sale scanner is equipped to respond to multiple different symbologies printed on a single product. The scanner captures many frames per second, as products are swiped through a viewing volume. Each frame is decoded, yielding one or more payloads. A reconciliation module compares each newly-decoded payload against a list of payloads previously output by the module, to determine if the current payload is semantically-equivalent to a previously-output payload. If so, the previously-output payload is output again, in lieu of the just-decoded payload. If no equivalent is found, the current payload is output and added to the list for comparison against future payloads. A great number of other features and arrangements are also detailed.
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公开(公告)号：US10474858B2
公开(公告)日：2019-11-12
申请号：US16277652
申请日：2019-02-15
Applicant: Digimarc Corporation
Inventor： Bruce L. Davis , Tony F. Rodriguez , Geoffrey B. Rhoads , Eric D. Evans , Rebecca L. Gerlach
IPC: G06K7/10 , G06K7/14 , G06K9/18 , G06K9/20 , G06K9/78 , G06Q30/00 , G07G1/00 , G06Q20/20 , G06K9/00 , G06Q10/08 , G06Q30/06 , G06K9/46 , G06F3/147
Abstract: A variety of technologies having practical application in retail stores are detailed. One is an improved method of identifying items selected by customers. This method includes receiving sensor data from plural sensors, including (a) ceiling-mounted cameras that monitor tracks of customers through aisles of the store, and (b) inventory sensors that are positioned to monitor removal of stock from store shelves. This received sensor data is employed in evaluating plural alternate item identification hypotheses. These hypotheses include a first hypothesis that a customer selected an item having a first identity, and a second hypothesis that the customer selected an item having a second identity. A confidence score is associated with each of the first and second item selection hypotheses. These confidence scores are refined as sensor data is received, e.g., increasing a confidence score of one hypothesis, and reducing a confidence score of another. Such refining continues until one of the hypotheses becomes a winner, due to an associated confidence score fulfilling a predetermined criterion (e.g., reaching a threshold value), at which time the item can be added to a tally for that individual. The winning item identification hypothesis may identify a barcoded item, without that item's barcode ever having been read by a barcode reader. A great number of other features and arrangements are also detailed.
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公开(公告)号：US20140112524A1
公开(公告)日：2014-04-24
申请号：US13804413
申请日：2013-03-14
Applicant: Digimarc Corporation
Inventor： Yang Bai , Alastair M. Reed , Eric D. Evans , Rebecca L. Gerlach , Tomas Filler
CPC classification number: G06T1/005 , G06K9/2054 , G06K9/3233 , G06T7/10 , G06T7/194 , G06T7/73 , G06T2201/0051 , G06T2201/0065
Abstract: In some arrangements, product packaging is digitally watermarked over most of its extent to facilitate high-throughput item identification at retail checkouts. Imagery of such packaging is analyzed to detect digital watermarking. One claim recites a method utilized at a retail checkout location comprising: receiving imagery representing a packaged item from a digital camera, the packaged item including digital watermarking hidden on its packaging, the packaged item moving relative to the digital camera; determining a region in the imagery corresponding to at least one relatively faster moving object; arranging watermark detection blocks over the determine region; an detecting the digital watermarking from the watermark detection blocks. Of course other claims and combinations are also provided.
Abstract translation: 在一些安排中，产品包装在其大部分程度上以数字水印方式，以促进零售结算处的高通量物品识别。 分析这种包装的图像以检测数字水印。 一个权利要求记载了在零售结帐地点使用的方法，包括：从数字照相机接收表示包装物品的图像，所述包装物品包括隐藏在其包装上的数字水印，所述包装物品相对于所述数码相机移动; 确定对应于至少一个相对较快的移动物体的图像中的区域; 在确定区域上布置水印检测块; 从水印检测块检测数字水印。 当然，也提供其他权利要求和组合。
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公开(公告)号：US12022056B2
公开(公告)日：2024-06-25
申请号：US17903747
申请日：2022-09-06
Applicant: Digimarc Corporation
Inventor： Scott M. Long , Eric D. Evans
IPC: G06V10/00 , G06F18/22 , G06T1/00 , G06T5/40 , G06V10/22 , G06V10/46 , H04N17/00 , H04N19/44 , H04N19/91
CPC classification number: H04N17/002 , G06F18/22 , G06T1/0028 , G06T5/40 , G06V10/22 , G06V10/462 , H04N19/44 , H04N19/91 , G06T2201/0052
Abstract: In computer vision systems that need to decode machine-readable indicia from captured imagery, it is critical to select imaging parameters (e.g., exposure interval, exposure aperture, camera gain, intensity and duration of supplemental illumination) that best allow detection of subtle features from imagery. In illustrative embodiments, a Shannon entropy metric or a KL divergence metric is used to guide selection of an optimal set of imaging parameters. In accordance with other aspects of the technology, different strategies identify which spatial locations within captured imagery should be successively examined for machine readable indicia, in order to have a greatest likelihood of success, within a smallest interval of time. A great variety of other features and arrangements are also detailed.
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公开(公告)号：US20230004769A1
公开(公告)日：2023-01-05
申请号：US17867386
申请日：2022-07-18
Applicant: Digimarc Corporation
Inventor： Eric D. Evans , Christopher M. Haverkate , Mark-Andrew Ray Tait
Abstract: In an illustrative system, a point-of-sale scanner is equipped to respond to multiple different symbologies printed on a single product. The scanner captures many frames per second, as products are swiped through a viewing volume. Each frame is decoded, yielding one or more payloads. A reconciliation module compares each newly-decoded payload against a list of payloads previously output by the module, to determine if the current payload is semantically-equivalent to a previously-output payload. If so, the previously-output payload is output again, in lieu of the just-decoded payload. If no equivalent is found, the current payload is output and added to the list for comparison against future payloads. A great number of other features and arrangements are also detailed.
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Patent Agency Ranking
公开(公告)号：US11443400B2
公开(公告)日：2022-09-13
申请号：US16819510
申请日：2020-03-16
Applicant: Digimarc Corporation
Inventor： Eric D. Evans , Christopher M. Haverkate
Abstract: In computer vision systems that need to decode machine-readable indicia from captured imagery, it is critical to select imaging parameters (e.g., exposure interval, exposure aperture, camera gain, intensity and duration of supplemental illumination) that best allow detection of subtle features from imagery. In illustrative embodiments, a Shannon entropy metric or a KL divergence metric is used to guide selection of an optimal set of imaging parameters. In accordance with other aspects of the technology, different strategies identify which spatial locations within captured imagery should be successively examined for machine readable indicia, in order to have a greatest likelihood of success, within a smallest interval of time. A great variety of other features and arrangements are also detailed.
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公开(公告)号：US11288472B2
公开(公告)日：2022-03-29
申请号：US17142928
申请日：2021-01-06
Applicant: Digimarc Corporation
Inventor： Tony F. Rodriguez , Bruce L. Davis , Geoffrey B. Rhoads , Alastair M. Reed , Eric D. Evans , Rebecca L. Gerlach , John F. Stach , Marc G. Footen
IPC: G06K9/00 , G06K7/10 , G06K7/14 , G06K9/18 , G06K9/20 , G06K9/78 , G06Q10/08 , G06Q20/20 , G06Q30/00 , G07G1/00 , G06F3/147 , G06K9/46 , G06Q30/06
Abstract: In one aspect, a retail store has multiple sensors, including item sensors in a shopping cart for gathering data from a shopper-selected first item. At least certain of the sensor data is provided to a classifier, which was previously-trained (using data including optical data from known items) to identify possible item matches corresponding to data sensed from the first item. An item identification hypothesis that the shopper-selected first item has a particular identity is evaluated based on (a) information from the classifier, and (b) store layout data indicating items associated with a store location visited by the cart or shopper. The item identification hypothesis has a confidence score. If the score meets a criterion, an item of the hypothesized identity is added to a shopping tally. A great number of other features and arrangements are also detailed.
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公开(公告)号：US20210303959A1
公开(公告)日：2021-09-30
申请号：US17237895
申请日：2021-04-22
Applicant: Digimarc Corporation
Inventor： Eric D. Evans , Christopher M. Haverkate , Mark-Andrew Ray Tait
Abstract: In an illustrative system, a point-of-sale scanner is equipped to respond to multiple different symbologies printed on a single product. The scanner captures many frames per second, as products are swiped through a viewing volume. Each frame is decoded, yielding one or more payloads. A reconciliation module compares each newly-decoded payload against a list of payloads previously output by the module, to determine if the current payload is semantically-equivalent to a previously-output payload. If so, the previously-output payload is output again, in lieu of the just-decoded payload. If no equivalent is found, the current payload is output and added to the list for comparison against future payloads. A great number of other features and arrangements are also detailed.
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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.
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公开(公告)号：US20190188435A1
公开(公告)日：2019-06-20
申请号：US16277652
申请日：2019-02-15
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 Calhoon
IPC: G06K7/10 , G06Q10/08 , G06K7/14 , G06K9/18 , G06K9/20 , G06K9/78 , G06Q30/00 , G07G1/00 , G06Q20/20 , G06K9/00
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: A variety of technologies having practical application in retail stores are detailed. One is an improved method of identifying items selected by customers. This method includes receiving sensor data from plural sensors, including (a) ceiling-mounted cameras that monitor tracks of customers through aisles of the store, and (b) inventory sensors that are positioned to monitor removal of stock from store shelves. This received sensor data is employed in evaluating plural alternate item identification hypotheses. These hypotheses include a first hypothesis that a customer selected an item having a first identity, and a second hypothesis that the customer selected an item having a second identity. A confidence score is associated with each of the first and second item selection hypotheses. These confidence scores are refined as sensor data is received, e.g., increasing a confidence score of one hypothesis, and reducing a confidence score of another. Such refining continues until one of the hypotheses becomes a winner, due to an associated confidence score fulfilling a predetermined criterion (e.g., reaching a threshold value), at which time the item can be added to a tally for that individual. The winning item identification hypothesis may identify a barcoded item, without that item's barcode ever having been read by a barcode reader. A great number of other features and arrangements are also detailed.
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