Mobile security system using a plurality of cameras

    公开(公告)号:US11761762B1

    公开(公告)日:2023-09-19

    申请号:US17813439

    申请日:2022-07-19

    Applicant: TP Lab, Inc.

    Inventor: Chi Fai Ho

    CPC classification number: G01C11/06 G01B11/00 G01C3/08 G06T7/55 G06T7/70 H04N23/90

    Abstract: A mobile security system includes a first camera, a second camera, and a controller. The first and second cameras capture first and second images at a first time and include first and second object images of an object, respectively. The controller: obtains a camera distance between the first and second cameras, receives the first and second images from the first and second cameras, retrieves the first and second object images in the first and second images, respectively; determines first and second object image sizes of the object in the first and second object images, respectively; calculates a first object distance between the first camera and the object using the camera distance and the first and second object image sizes; determines whether the first object distance satisfies criteria of a security policy; and if so, apply a security action associated with the security policy.

    METHOD FOR GEOREFERENCING OF OPTICAL IMAGES
    5.
    发明公开

    公开(公告)号:US20230141795A1

    公开(公告)日:2023-05-11

    申请号:US17920655

    申请日:2021-04-16

    Inventor: Philippe NONIN

    Abstract: A method (100) for referencing an optical image (19) including: obtaining (110, 120) a stereoscopic image pair (19, 23) of the optical image (19) and a SAR image (35), the surface areas covered by the images (19, 23, 35) on the ground having an overlapping area (39); selecting (130) an area of interest (42) in the overlapping area (39); from the area of interest (42): obtaining (140) a 3D model (40); calculating (150) a simulated radar image (44); estimating (160) an offset (di, dj) between the simulated image (44) and the radar image (35); selecting (170) a reference point (46); projecting (180) and shifting (di, dj) the reference point (46) in the radar image (35) to correct the radar connection point (46′″); determining (175) a pair of connection points (46′, 46″) in the image pair; and referencing the optical image (19) based on the connection points (46′, 46″, 46′″).

    Achieving ultra-high resolution heterodyne synthetic imaging across multiple platforms using optical frequency comb sources

    公开(公告)号:US09995581B2

    公开(公告)日:2018-06-12

    申请号:US15377754

    申请日:2016-12-13

    Inventor: Sung-Joo Ben Yoo

    CPC classification number: G01C11/00 G01C11/06

    Abstract: A system that performs heterodyne optical imaging across multiple platforms gathers an optical signal from an optical sensor at each of the multiple platforms. At the same time, an optical frequency comb local oscillator (LO) at each of the platforms generates a reference comb signal comprising a set of optical frequency comb lines at different frequencies, wherein each optical frequency comb LO is locked to a local atomic clock at each of the platforms. Next, a mixer, at each of the platforms, is used to mix the optical signal gathered from the optical sensor with the reference comb signal generated by the optical frequency comb LO to generate a mixed signal. The system then communicates the mixed signals generated at each of the platforms to a central location. Finally, the system correlates the mixed signals received from each of the platforms and generates a reconstructed optical image.

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