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    COMPUTATIONAL SHEAR BY PHASE STEPPED SPECKLE HOLOGRAPHY
    1.
    发明公开
    COMPUTATIONAL SHEAR BY PHASE STEPPED SPECKLE HOLOGRAPHY 审中-公开

    公开(公告)号：US20240255273A1

    公开(公告)日：2024-08-01

    申请号：US18613522

    申请日：2024-03-22

    Applicant: BAE Systems Information and Electronic Systems Integration Inc.

    Inventor： Andrew N. Acker

    IPC: G01B9/02098 ,  G01B9/02

    CPC classification number: G01B9/02098 ,  G01B9/02094

    Abstract: A method of producing a pair of simultaneous artificial specklegram images. The method includes steps of: reflecting a target illumination beam off of a target surface via a transmitter optical component of a shearography system; directing a first reference beam from the transmitter optical component to a receiving optical component of the shearography system; directing a second reference beam from the transmitter optical component to the receiving optical component; receiving a reflected beam from the target surface with the receiving optical component; interfering the reflected beam with the first reference beam and the second reference beam; communicating a first data set relating to the pair of simultaneous artificial specklegram images from the receiving optical component to a processor; and processing the first data set to generate the pair of simultaneous artificial specklegram images.

    Polarization decorrelation time imaging
    4.
    发明授权
    Polarization decorrelation time imaging 有权

    公开(公告)号：US10794767B1

    公开(公告)日：2020-10-06

    申请号：US16518571

    申请日：2019-07-22

    Applicant: BAE Systems Information and Electronic Systems Integration Inc.

    Inventor： Andrew N. Acker

    IPC: G01J4/02 ,  G06K9/00 ,  G06K9/46 ,  H01S3/13 ,  G01J4/00

    Abstract: An object detection system uses a change in a linear polarization statistic between a first image at a first time and a second image at a second time to determine the presence or the likelihood of an object beneath a surface. The presence of the object may be determined by regions of anomalously high changes in the polarization statistic. The system may use a polarization change detection detector which may simultaneously capture images in multiple polarization channels. Further, the polarization change detection detector may be coupled with a laser interferometry system. Further, the polarization change detection detector may be used to capture a time series of images to determine the polarization decorrelation time for each pixel in the field of view to provide additional detail regarding an object detected beneath the surface.

    Phase resolved shearography for remote sensing
    5.
    发明授权
    Phase resolved shearography for remote sensing 有权
    用于遥感的相位分辨率剪切

    公开(公告)号：US09476700B2

    公开(公告)日：2016-10-25

    申请号：US14538444

    申请日：2014-11-11

    Applicant: BAE Systems Information and Electronic Systems Integration Inc.

    Inventor： Michael J. DeWeert ,  Andrew N. Acker

    IPC: G01B11/16 ,  G01S17/88 ,  G01V1/22

    CPC classification number: G01B11/162 ,  G01S17/88 ,  G01V1/226

    Abstract: A shearography system and method provide advances allowing for rapid processing to produce shearograms which provide surface motion information which may be helpful in multiple fields. For instance, amongst virtually endless possibilities, the system and method may allow for detection of underground structures or ordnance and or be used in the medical field to provide non-contact sensing of a person's internal structures or movements.

    Abstract translation: 剪切系统和方法提供了进步，允许快速处理产生剪切图，其提供可能在多个领域中有帮助的表面运动信息。 例如，在几乎无限的可能性中，系统和方法可以允许检测地下结构或弹药，并且可以在医疗领域中使用以提供对人的内部结构或运动的非接触感测。

    Shearography detection and classification
    6.
    发明授权
    Shearography detection and classification 有权

    公开(公告)号：US10914573B2

    公开(公告)日：2021-02-09

    申请号：US16424669

    申请日：2019-05-29

    Applicant: BAE Systems Information and Electronic Systems Integration Inc.

    Inventor： Andrew N. Acker

    IPC: G06K9/00 ,  G01B11/16 ,  G06N3/04 ,  G06K9/62

    Abstract: A system for classifying objects detected in shearographic images identifying via a derivative peaks method, process, or algorithm is accomplished with a CNN (CNN). The system utilized training techniques of the CNN to classify objects as threats or non-threats. The system utilizes extracted clips from the shearographic image that contain the presence of an object so that the extracted clip containing the object is/are evaluated by the CNN to classify the object on or below a surface that has been insonified or otherwise stimulated to generate the shearographic image.

    SHEAROGRAPHY DETECTION AND CLASSIFICATION
    7.
    发明申请
    SHEAROGRAPHY DETECTION AND CLASSIFICATION 审中-公开

    公开(公告)号：US20200378751A1

    公开(公告)日：2020-12-03

    申请号：US16424669

    申请日：2019-05-29

    Applicant: BAE Systems Information and Electronic Systems Integration Inc.

    Inventor： Andrew N. Acker

    IPC: G01B11/16 ,  G06N3/04 ,  G06K9/62 ,  G06K9/00

    Abstract: A system for classifying objects detected in shearographic images identifying via a derivative peaks method, process, or algorithm is accomplished with a CNN (CNN). The system utilized training techniques of the CNN to classify objects as threats or non-threats. The system utilizes extracted clips from the shearographic image that contain the presence of an object so that the extracted clip containing the object is/are evaluated by the CNN to classify the object on or below a surface that has been insonified or otherwise stimulated to generate the shearographic image.

    COMPUTATIONAL SHEAR BY PHASE STEPPED SPECKLE HOLOGRAPHY
    9.
    发明申请
    COMPUTATIONAL SHEAR BY PHASE STEPPED SPECKLE HOLOGRAPHY 有权

    公开(公告)号：US20220011091A1

    公开(公告)日：2022-01-13

    申请号：US16925420

    申请日：2020-07-10

    Applicant: BAE Systems Information and Electronic Systems Integration Inc.

    Inventor： Andrew N. Acker ,  Jacob D. Garan

    IPC: G01B9/02 ,  G01B11/16

    Abstract: A method and apparatus for performing shearography where the shear length and direction can be set in image processing, thus allowing all shear sizes to be computed and tested from a single data set, which can be collected in a single pass over a test surface or test object. The present process assures that a single data set can be processed with optimal shear length for multiple target types, thus reducing or eliminating the chance of missing a target detection while additionally enhancing target shape analysis by allowing the calculation of target response versus shear length and shear direction.

    POLARIZATION CHANGE DETECTION
    10.
    发明申请
    POLARIZATION CHANGE DETECTION 审中-公开

    公开(公告)号：US20200088583A1

    公开(公告)日：2020-03-19

    申请号：US16135164

    申请日：2018-09-19

    Applicant: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.

    Inventor： Andrew N. Acker ,  Michael J. DeWeert

    IPC: G01J4/04 ,  G01N21/21 ,  G01V3/12

    Abstract: An object detection system uses a change in a linear polarization statistic between a first image at a first time and a second image at a second time to determine the presence or the likelihood of an object beneath a surface. The presence of the object may be determined by regions of anomalously high changes in the polarization statistic. The system may use a polarization change detection detector which may simultaneously capture images in multiple polarization channels. Further, the polarization change detection detector may be coupled with a laser interferometry system.

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