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公开(公告)号：US11187523B1
公开(公告)日：2021-11-30
申请号：US16885739
申请日：2020-05-28
摘要： Systems and methods for three-dimensional (3D) shape estimation of objects embedded in light-scattering media via polarimetry are provided. The systems and methods utilize polarization to exploit forward scattering in the light-scattering medium to mitigate backscatter interference (BSI).
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2.发明授权公开(公告)号：US09671521B2
公开(公告)日：2017-06-06
申请号：US14800145
申请日：2015-07-15
发明人： Eric M. Louchard
CPC分类号： G01V8/12 , G01V1/226 , G01V1/28 , G01V2210/121 , G01V2210/48
摘要： A method of detecting land mines includes pre-processing a raw laser interferometer image, processing pre-processed image by calculating one or more derivatives having one or more peaks, along vectors extending in at least two different directions, mapping the peaks of said derivatives to create a derivative map, and detecting an anomalous signature in the derivative map.
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公开(公告)号：US12123951B1
公开(公告)日：2024-10-22
申请号：US17733227
申请日：2022-04-29
IPC分类号： G01S17/89 , G01J4/04 , G01S7/4861 , G06T5/73
CPC分类号： G01S17/89 , G01J4/04 , G01S7/4861 , G06T5/73 , G06T2207/20201
摘要： A system and method is provided to characterize optical properties (Scattering, attenuation, de-polarization) of a light-transmitting medium and local environment, by determining a scattering rate of light through a medium, wherein determining the scattering rate of light through the medium is accomplished by utilizing polarized light transmitted from an optical source. The system and method performs a function based on the characterized optical properties of the medium, wherein the function is one of, for example: detection of objects embedded in the medium, object ranging through the medium, or deblurring of images acquired through the medium.
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公开(公告)号：US20230314107A1
公开(公告)日：2023-10-05
申请号：US17707257
申请日：2022-03-29
发明人： Andrew N. Acker , Eric M. Louchard
CPC分类号： F41H11/13 , G06V20/60 , G06V20/17 , G06T7/70 , G06V2201/07 , G06T2207/10036
摘要： Predicting whether objects in an image form a scattered minefield (SMF) is accomplished by a system and method utilizing at least one non-transitory computer readable storage medium having instructions stored thereon. When the instructions are executed by a processor, the instructions implement operations to determine whether the objects define a SMF based on an estimation of a distribution process from which the MLOs are positioned on the surface in the image obtained from the image sensor.
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公开(公告)号：US20210372779A1
公开(公告)日：2021-12-02
申请号：US16885739
申请日：2020-05-28
摘要： Systems and methods for three-dimensional (3D) shape estimation of objects embedded in light-scattering media via polarimetry are provided. The systems and methods utilize polarization to exploit forward scattering in the light-scattering medium to mitigate backscatter interference (BSI).
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公开(公告)号：US10473429B1
公开(公告)日：2019-11-12
申请号：US16106513
申请日：2018-08-21
发明人： Eric M. Louchard
摘要： A projectile detection technique is disclosed. The technique helps improve the self-defense capabilities of strategic platforms such as naval ships against asymmetric threats such as anti-ship missiles (ASMs). These threats can be particularly challenging in a highly cluttered maritime environment, where the threats can be too close for radar to accurately detect. In one example, the projectile detection technique automatically detects ASMs flying above the horizon by using mid-wavelength infrared (MWIR) and visible/near-infrared (VNIR) camera systems, and locating the horizon line and segmenting the imagery into different regions. Projectiles are detected in the near-horizon segment using a Fourier phase-only transform and convolution matched filters to enhance exceedances, then applying multi-frame processing to measure persistence and scintillation (e.g., flicker from missile exhaust) to help filter out background clutter objects. The use of the phase-only transform, matched filters, and multi-frame processing helps detect single-point anomalies and distinguish ASMs from background clutter.
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