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111 条记录 (耗时 0.027 秒)

    Method, controller and apparatus for correcting thermal images
    81.
    发明授权
    Method, controller and apparatus for correcting thermal images 有权

    公开(公告)号：US12086966B2

    公开(公告)日：2024-09-10

    申请号：US17741984

    申请日：2022-05-11

    申请人： Stratasys Powder Production Ltd.

    发明人： Gianluca Dorini

    IPC分类号： G06T5/80 ,  G01J5/00 ,  G01J5/80

    CPC分类号： G06T5/80 ,  G01J5/0066 ,  G01J5/80 ,  G01J2005/0077 ,  G06T2207/10048

    摘要： A method for correcting thermal image distortion in a thermal camera in an apparatus for the layer-by-layer manufacture of three-dimensional objects, the thermal camera comprising a plurality of sensor pixels arranged along a first direction; the method comprising the steps of: (a) causing a temperature reference to be at a first steady state temperature; (b) moving the temperature reference at the first steady state temperature through a plurality of positions along the first direction through the field of view of the thermal camera; (c) recording a plurality of thermal images with the thermal camera while moving the temperature reference during step (b), each thermal image corresponding to one of the plurality of positions and comprising the detected temperature of the temperature reference as detected by at least one pixel of the plurality of sensor pixels; (d) identifying the at least one pixel that detected the temperature of the temperature reference within a respective thermal image at the corresponding one of the plurality of positions; (e) constructing a thermal map from the identified pixels representing the detected temperature of the temperature reference at the plurality of positions; (f) generating a correction matrix for the identified pixels based on comparison between the thermal map and the first steady state temperature; and (g) applying the correction matrix to subsequent measurements of the thermal camera. A controller and an apparatus for the layer-by-layer manufacture of three-dimensional objects comprising the controller to carry out the method are also provided.

    Heat source detection device
    83.
    发明授权
    Heat source detection device 有权

    公开(公告)号：US11933673B2

    公开(公告)日：2024-03-19

    申请号：US16970537

    申请日：2019-02-19

    申请人： IHI Corporation

    发明人： Chiharu Sasagawa ,  Takashi Ogai

    IPC分类号： G01J5/00

    CPC分类号： G01J5/007 ,  G01J5/0066 ,  G01J2005/0077

    摘要： A heat source detection device is a heat source detection device that detects a heat source on the earth using observation data of a radiometer provided in a geostationary satellite and includes: a calculation unit that calculates a heat source proportion value indicating a proportion of a wavelength distribution due to the heat source included in the observation data to the observation data by curve fitting using Planck's law; and a determination unit that determines presence or absence of the heat source according to the heat source proportion value calculated by the calculation unit.