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公开(公告)号：US20210323644A1
公开(公告)日：2021-10-21
申请号：US16849375
申请日：2020-04-15
Inventor： Michael J. DeWeert , Reid A. Noguchi
Abstract: Underwater navigational systems and methods utilizing sunlight polarized via scattering through the water column that does not require an underwater vehicle to surface or use a global position system to maintain precise navigational positions and headings. These navigational systems and methods may be employed by manned or unmanned underwater vehicles and may be utilized by individual units and by units operating in a swarm.
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公开(公告)号：US11719822B2
公开(公告)日：2023-08-08
申请号：US17366225
申请日：2021-07-02
Inventor： Michael J. DeWeert , Brian Chock , Jacob D. Garan , Reid A. Noguchi , Gary Sawai , Dugan C. Yoon
Abstract: An underwater imaging system is carried by a submersible platform to capture images that are processed into three-dimensional images stitched together to create a 3D dimensional video at video rate speeds that are transmitted to a control unit above the surface of the water. The imaging system utilizes a high speed image sensor or camera to capture sequential gated images that are synced via a gating module to two sequential laser beam pulses. The laser beam pulses illuminate an object in each gated image. When the object is within a gate overlap region, the two images may be processed using 3D imaging techniques to generate a 3D representation of the object in the overlap region of the two gates.
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Patent Agency Ranking
公开(公告)号：US20210372779A1
公开(公告)日：2021-12-02
申请号：US16885739
申请日：2020-05-28
Inventor： Michael J. DeWeert , Eric M. Louchard , Reid A. Noguchi , Dugan C. Yoon
Abstract: 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：US20230003889A1
公开(公告)日：2023-01-05
申请号：US17366225
申请日：2021-07-02
Inventor： Michael J. DeWeert , Brian Chock , Jacob D. Garan , Reid A. Noguchi , Gary Sawai , Dugan C. Yoon
Abstract: An underwater imaging system is carried by a submersible platform to capture images that are processed into three-dimensional images stitched together to create a 3D dimensional video at video rate speeds that are transmitted to a control unit above the surface of the water. The imaging system utilizes a high speed image sensor or camera to capture sequential gated images that are synced via a gating module to two sequential laser beam pulses. The laser beam pulses illuminate an object in each gated image. When the object is within a gate overlap region, the two images may be processed using 3D imaging techniques to generate a 3D representation of the object in the overlap region of the two gates.
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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
Inventor： Michael J. DeWeert , Eric M. Louchard , Reid A. Noguchi , Dugan C. Yoon
Abstract: 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：US12123951B1
公开(公告)日：2024-10-22
申请号：US17733227
申请日：2022-04-29
Inventor： Michael J. DeWeert , Eric M. Louchard , Reid A. Noguchi , Gary Sawai , Dugan C. Yoon
IPC: G01S17/89 , G01J4/04 , G01S7/4861 , G06T5/73
CPC classification number: G01S17/89 , G01J4/04 , G01S7/4861 , G06T5/73 , G06T2207/20201
Abstract: 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：US20240329597A1
公开(公告)日：2024-10-03
申请号：US18194981
申请日：2023-04-03
Inventor： Michael J. DeWeert , Reid A. Noguchi , Somit S. Mathur
IPC: G03H1/22 , G03H1/00 , G03H1/02 , H04N23/20 , H04N23/61 , H04N23/695 , H04N23/698 , H04N23/90
CPC classification number: G03H1/2249 , G03H1/0005 , G03H1/02 , G03H1/2202 , H04N23/20 , H04N23/61 , H04N23/695 , H04N23/698 , H04N23/90 , G02B5/001 , G03H2001/0033 , G03H2001/0268 , G03H2001/2234 , G03H2001/2284 , G03H2222/12 , G03H2223/55
Abstract: An optical detection system uses high-resolution holographic filters for target detection within a very-large field of view image acquired with a reflector. The holographic filter acts as an optical computer, mixing phase and amplitude information of known targets with light from the scene, automatically enhancing portions of the image that match threat objects or other object of interest. A lens forming a Fourier transform of the entire scene is used, and within that transform, the holographic information of a target or multiple targets is added. By acting as an inverse optical transfer function, the hologram gathers the target information to single point, and removes non-target background. Amplification is done by using a laser-illuminated hologram to create a phase-amplitude filter in a photorefractive material at the transform plane. By mixing the hologram and the scene at the transform plane, the matching is enhanced regardless of target location in the scene.
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