POLARIMETER WITH MULTIPLE INDEPENDENT TUNABLE CHANNELS AND METHOD FOR MATERIAL AND OBJECT CLASSIFICATION AND RECOGNITION

    公开(公告)号:EP3371631A1

    公开(公告)日:2018-09-12

    申请号:EP16920449.2

    申请日:2016-12-22

    CPC classification number: G06K9/6232 G01N21/21 G02B5/3083 G02B27/283 G06K9/78

    Abstract: Embodiments of an active or laser polarimeter are disclosed that transmit multiple independent and tunable temporally-multiplexed polarization states and record or image, at video rates if necessary, the polarized intensity or irradiance reflected or transmitted by objects illuminated by those states, and apply the recorded data to material and/or object classification and recognition using classification algorithms that exploit features of polarization signatures dependent on material type, texture, and/or object shape. The polarimeter also generally records and utilizes one or more passive polarization measurements in order to realize a hybrid active-passive polarimeter. The polarimeter channels are configured and tuned to access multi-dimensional signature spaces specified by existing signature models and/or measurements, with polarization-modulator settings derived by a newly-disclosed subspace-projection algorithm that maximizes a target contrast parameter. Multiple independent polarization channels allow the new polarimeter to outperform conventional two-channel polarimeters, while the subspace-projection algorithm allows the number of channels to be minimized in order to minimize sensor size, weight, and power (SWaP) and maximize speed. Multiple channels are realized by multiplexing among independent transmitter polarization states with one or more high-speed multiplexers, in one embodiment a set of fold-mirror assemblies in the transmitter among which the laser beam is switched by one or more galvanometer scanners fitted in one embodiment with a newly-disclosed composite mirror. The method for material and object classification and recognition includes the maximally-biased classifier derived by the subspace-projection algorithm applied to a single target Mueller matrix, and methods to generalize the classifier.

    APPARATUS AND METHOD FOR NAVIGATION
    69.
    发明公开
    APPARATUS AND METHOD FOR NAVIGATION 审中-公开
    NAVIGATIONSVORRICHTUNG以外地区

    公开(公告)号:EP2480869A4

    公开(公告)日:2017-03-15

    申请号:EP10818498

    申请日:2010-09-21

    Applicant: VOROTEC LTD

    CPC classification number: G01J4/04 G01C17/34 G01C21/02 G01J2004/005

    Abstract: An apparatus and system for use in determining location of a celestial body are presented. The apparatus comprises: a polarizer comprising an array of polarized light filter cells and a light sensor array. The array of polarized light filter cells comprises at least a first polarization direction and a second polarization direction different from said first polarization direction. And the polarizer thereby produces polarized light of at least first and second different polarizations. The light sensor array is configured to receive the polarized light from the polarizer and produce data indicative of a pattern of at least one of light polarization intensity and direction. The pattern is indicative of at least one of azimuth and elevation of the celestial body to be located.

    Abstract translation: 提出了一种用于确定天体位置的装置和系统。 该装置包括:偏振器,包括偏振光滤光器单元阵列和光传感器阵列。 偏振光滤波器单元的阵列至少包括与所述第一偏振方向不同的第一偏振方向和第二偏振方向。 并且偏振器由此产生至少第一和第二不同偏振的偏振光。 光传感器阵列被配置为接收来自偏振器的偏振光,并且产生指示光偏振强度和方向中的至少一个的图案的数据。 该图案表示要定位的天体的方位角和仰角中的至少一个。

    SENSORANORDNUNG ZUM ERFASSEN ORTSAUFGELÖSTER PHOTOMETRISCHER DATEN
    70.
    发明公开
    SENSORANORDNUNG ZUM ERFASSEN ORTSAUFGELÖSTER PHOTOMETRISCHER DATEN 审中-公开
    SENSORANORDNUNG ZUM ERFASSENORTSAUFGELÖSTER光度计日期

    公开(公告)号:EP3137863A1

    公开(公告)日:2017-03-08

    申请号:EP15720325.8

    申请日:2015-04-29

    Abstract: The invention relates to a sensor assembly (1) for capturing spatially resolved photometric data comprising a sensor unit (10), a controllable shutter assembly (20), which is arranged in front of the sensor unit (10) and by means of which an incidence of light on the sensor unit (10) can be controlled in dependence on direction, and an evaluating unit (30) for evaluating the information output by the sensor unit (10) and calculating spatially resolved brightness information, wherein the sensor unit (10) has at least two sensor segments (11), with which different combinations of color and polarization filters (12, 13) or spectrometers are associated, and wherein the evaluating unit (30) is designed to supplement the brightness information with additional photometric data on the basis of the signals output by the various sensor segments (11).

    Abstract translation: 本发明涉及一种用于捕获空间分辨的测光数据的传感器组件(1),包括传感器单元(10),可控制的快门组件(20),其布置在传感器单元(10)的前面, 可以根据方向控制传感器单元(10)上的光的入射,以及用于评估由传感器单元(10)输出的信息并计算空间分辨亮度信息的评估单元(30),其中,传感器单元 )具有至少两个传感器段(11),颜色和偏振滤光器(12,13)或光谱仪的不同组合与之相关联,并且其中评估单元(30)被设计为通过附加的光度数据补充亮度信息 由各种传感器段(11)输出的信号的基础。

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