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公开(公告)号：US12160662B2
公开(公告)日：2024-12-03
申请号：US17554704
申请日：2021-12-17
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Miroslav Trajkovic , Heng Zhang , Igor Vinogradov
Abstract: A system and methods for performing focus tuning of an imaging system. The method includes an image sensor obtaining a plurality of images, with each image obtained at a different focus of a tunable optical element. A processor identifying a reference element in at least one of the images of the plurality of images. The processor then determines a reference image that includes the reference element and identifies a reference focus of the tunable optical element. The processor then stores the identified reference focus in a memory.
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公开(公告)号：US20220270383A1
公开(公告)日：2022-08-25
申请号：US17743228
申请日：2022-05-12
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Igor Vinogradov , Miroslav Trajkovic , Heng Zhang
Abstract: Methods and systems to focus an imager for machine vision applications are disclosed. A disclosed example machine vision method includes: capturing, via an imaging assembly, an image of an indicia appearing within a field of view (FOV) of the imaging assembly; recognizing, via a controller, the indicia as a focus adjustment trigger, the focus adjustment trigger operative to trigger an adjustment of at least one focus parameter associated with the imaging assembly; adjusting the at least one focus parameter based at least in part on the indicia; locking the at least one focus parameter such that the at least one focus parameter remains unaltered for a duration; and responsive to the locking of the at least one focus parameter, capturing, via the imaging assembly, at least one subsequent image of an object of interest.
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公开(公告)号：US11335105B2
公开(公告)日：2022-05-17
申请号：US16596704
申请日：2019-10-08
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Igor Vinogradov , Miroslav Trajkovic , Heng Zhang
Abstract: Methods and systems to focus an imager for machine vision applications are disclosed. A disclosed example machine vision method includes: capturing, via an imaging assembly, an image of an indicia appearing within a field of view (FOV) of the imaging assembly; recognizing, via a controller, the indicia as a focus adjustment trigger, the focus adjustment trigger operative to trigger an adjustment of at least one focus parameter associated with the imaging assembly; adjusting the at least one focus parameter based at least in part on the indicia; locking the at least one focus parameter such that the at least one focus parameter remains unaltered for a duration; and responsive to the locking of the at least one focus parameter, capturing, via the imaging assembly, at least one subsequent image of an object of interest.
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Patent Agency Ranking
公开(公告)号：US20210103754A1
公开(公告)日：2021-04-08
申请号：US16596704
申请日：2019-10-08
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Igor Vinogradov , Miroslav Trajkovic , Heng Zhang
Abstract: Methods and systems to focus an imager for machine vision applications are disclosed. A disclosed example machine vision method includes: capturing, via an imaging assembly, an image of an indicia appearing within a field of view (FOV) of the imaging assembly; recognizing, via a controller, the indicia as a focus adjustment trigger, the focus adjustment trigger operative to trigger an adjustment of at least one focus parameter associated with the imaging assembly; adjusting the at least one focus parameter based at least in part on the indicia; locking the at least one focus parameter such that the at least one focus parameter remains unaltered for a duration; and responsive to the locking of the at least one focus parameter, capturing, via the imaging assembly, at least one subsequent image of an object of interest.
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公开(公告)号：US11763412B2
公开(公告)日：2023-09-19
申请号：US17743228
申请日：2022-05-12
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Igor Vinogradov , Miroslav Trajkovic , Heng Zhang
CPC classification number: G06T1/0007 , G06V10/225 , G06V20/63 , H04N23/67
Abstract: Methods and systems to focus an imager for machine vision applications are disclosed. A disclosed example machine vision method includes: capturing, via an imaging assembly, an image of an indicia appearing within a field of view (FOV) of the imaging assembly; recognizing, via a controller, the indicia as a focus adjustment trigger, the focus adjustment trigger operative to trigger an adjustment of at least one focus parameter associated with the imaging assembly; adjusting the at least one focus parameter based at least in part on the indicia; locking the at least one focus parameter such that the at least one focus parameter remains unaltered for a duration; and responsive to the locking of the at least one focus parameter, capturing, via the imaging assembly, at least one subsequent image of an object of interest.
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公开(公告)号：US20230199310A1
公开(公告)日：2023-06-22
申请号：US17554704
申请日：2021-12-17
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Miroslav Trajkovic , Heng Zhang , Igor Vinogradov
IPC: H04N5/232
CPC classification number: H04N5/23212
Abstract: A system and methods for performing focus tuning of an imaging system. The method includes an image sensor obtaining a plurality of images, with each image obtained at a different focus of a tunable optical element. A processor identifying a reference element in at least one of the images of the plurality of images. The processor then determines a reference image that includes the reference element and identifies a reference focus of the tunable optical element. The processor then stores the identified reference focus in a memory.
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公开(公告)号：US20200160092A1
公开(公告)日：2020-05-21
申请号：US16193820
申请日：2018-11-16
Applicant: Zebra Technologies Corporation
Inventor： Miroslav Trajkovic , Heng Zhang
Abstract: A method and apparatus for template matching to find a predetermined pattern in an image is disclosed. A first visual boundary is detected in the captured image, and a second boundary concentric with the first boundary is calculated. The first and second boundaries define a portion of the captured image. The portion of the captured image is incrementally scanned about the center of the second boundary for a predetermined pattern having a predetermined orientation within the portion that match a template image. Alternatively, the portion of the captured image is unwrapped into a linear band image such that the first and second boundaries form a linear top and linear bottom of the linear band image, and the linear band image of the portion of the captured image is scanned for a predetermined pattern that matches a template image.
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公开(公告)号：US10977514B2
公开(公告)日：2021-04-13
申请号：US16193820
申请日：2018-11-16
Applicant: Zebra Technologies Corporation
Inventor： Miroslav Trajkovic , Heng Zhang
Abstract: A method and apparatus for template matching to find a predetermined pattern in an image is disclosed. A first visual boundary is detected in the captured image, and a second boundary concentric with the first boundary is calculated. The first and second boundaries define a portion of the captured image. The portion of the captured image is incrementally scanned about the center of the second boundary for a predetermined pattern having a predetermined orientation within the portion that match a template image. Alternatively, the portion of the captured image is unwrapped into a linear band image such that the first and second boundaries form a linear top and linear bottom of the linear band image, and the linear band image of the portion of the captured image is scanned for a predetermined pattern that matches a template image.
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