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公开(公告)号：US20180180485A1
公开(公告)日：2018-06-28
申请号：US15843667
申请日：2017-12-15
Applicant: Seek Thermal, Inc.
Inventor： Ross Macmillan , William Parrish , Jason Wolfe
CPC classification number: G01J5/0834 , G01J5/10 , G01J5/20 , G01J5/522 , G01J2005/0048 , G01J2005/0077 , G01J2005/0081 , H04N5/33 , H04N5/3651
Abstract: A thermography process for thermal imaging systems produced in quantity, including an imaging sensor and an ambient temperature sensor, that includes operations at three different places in the manufacture and actual use of the system. A temperature calibration may be performed on all units of a given design at a small number of controlled scene temperatures at one ambient temperature to produce a function that relates sensor signal to scene temperature. The function is determined for each individual unit and may be unique for each unit. Selected calibrated units may be subjected to a qualification test where they are exposed to larger number of controlled scene temperatures at a plurality of controlled ambient temperatures and the errors between the calibration derived function and the observed results and/or the actual scene temperatures at the various scene/ambient temperature combinations may be derived and put into a table that is loaded into all production units. In actual use of the imaging system, for any given actual observed signal and temperature sensor values, the corresponding scene temperature and/or error may be derived from the table and used to modify the temperature value from the calibration function.
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公开(公告)号：US20170179912A1
公开(公告)日：2017-06-22
申请号：US15455007
申请日：2017-03-09
Applicant: Seek Thermal, Inc.
Inventor： Jason Wolfe , William J. Parrish , Ross Williams
CPC classification number: H03G3/3084 , G01J1/18 , G01J1/44 , G01J5/22 , G01J5/34 , G01J2001/4406 , G01J2001/444 , G01J2005/0048 , G01J2005/0077 , G01R27/2605 , H01G7/00 , H04N5/33 , H04N5/3651 , H04N5/3655
Abstract: An imaging system includes an array of photodetectors and electronic circuitry associated with the photodetectors to read intensity values from the photodetectors. The electronic circuitry can include an integrator with an integrator capacitor having a nominal capacitance, wherein a gain of the electronic circuitry associated with a photodetector can depend at least in part on the actual capacitance of the integrator capacitor, the actual capacitance differing from the nominal capacitance. The imaging system can be configured to determine a gain factor that depends at least in part on the actual capacitance and/or a signal voltage input to the integrator. The imaging system can be configured to apply the gain factor based at least in part on the actual capacitance of the integrator capacitor calculated. The imaging system can be a thermal imaging system and may include an infrared camera core.
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公开(公告)号：US20190130535A1
公开(公告)日：2019-05-02
申请号：US16195593
申请日：2018-11-19
Applicant: Seek Thermal, Inc.
Inventor： Ross Williams , William J. Parrish , Jason Wolfe
Abstract: An imaging system whose Field of View FOV experiences occasional motion in relation to viewed scenes may be configured to reduce Fixed Pattern Noise (FPN) of acquired image data. FPN may be reduced by developing a pixel by pixel FPN correction term through a series of steps including blurring the image, identifying pixels to exclude from some calculations, a motion detector and an FPN updater for frames under motion and an FPN decay element for frames that are still.
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公开(公告)号：US10230912B2
公开(公告)日：2019-03-12
申请号：US15629526
申请日：2017-06-21
Applicant: Seek Thermal, Inc.
Inventor： Ross Williams , William J. Parrish , Jason Wolfe
Abstract: An imaging system whose Field of View FOV experiences occasional motion in relation to viewed scenes may be configured to reduce Fixed Pattern Noise (FPN) of acquired image data. FPN may be reduced by developing a pixel by pixel FPN correction term through a series of steps including blurring the image, identifying pixels to exclude from some calculations, a motion detector and an FPN updater for frames under motion and an FPN decay element for frames that are still.
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公开(公告)号：US20160057369A1
公开(公告)日：2016-02-25
申请号：US14829500
申请日：2015-08-18
Applicant: Seek Thermal, Inc.
Inventor： Jason Wolfe , Willliam J. Parrish
CPC classification number: H04N5/378 , G01J1/0228 , G01J1/44 , G01J1/46 , G01J5/026 , G01J5/20 , G01J5/22 , G01J2001/444 , H04N5/33 , H04N5/353 , H04N5/3651 , H04N5/3655 , H04N5/3765
Abstract: An imaging system includes a shutter, an array of photodetectors, and electronic circuitry associated with the photodetectors to read intensity values from the photodetectors, the electronic circuitry including elements configured to provide an operating bias point of the photodetectors. The imaging system includes components, such as a controller, configured to adaptively adjust the operating bias for the photodetectors wherein the adjustment is based at least in part on intermittent measurement of a flat field image. During use, the imaging system can be configured to perform intermittent adjustments of the operating bias based on changes in photodetector values for intermittently acquired flat field images. Adjustment of the operating bias may provide compensation for drift over time of the photodetectors and/or electronics due to effects including but not limited to temperature changes.
Abstract translation: 成像系统包括快门，光电检测器阵列以及与光电检测器相关联的电子电路以从光电检测器读取强度值，该电子电路包括被配置为提供光电检测器的操作偏置点的元件。 成像系统包括诸如控制器的组件，其被配置为自适应地调整光电探测器的操作偏压，其中调节至少部分地基于平坦场图像的间歇测量。 在使用期间，成像系统可以被配置为基于间歇获取的平场图像的光电检测器值的变化来执行对工作偏压的间歇性调整。 由于包括但不限于温度变化的影响，操作偏压的调整可以补偿光电检测器和/或电子器件随时间的漂移。
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Patent Agency Ranking
公开(公告)号：US20160056785A1
公开(公告)日：2016-02-25
申请号：US14829490
申请日：2015-08-18
Applicant: Seek Thermal, Inc.
Inventor： Jason Wolfe , Willliam J. Parrish , Ross Williams
CPC classification number: H03G3/3084 , G01J1/18 , G01J1/44 , G01J5/22 , G01J5/34 , G01J2001/4406 , G01J2001/444 , G01J2005/0048 , G01J2005/0077 , G01R27/2605 , H01G7/00 , H04N5/33 , H04N5/3651 , H04N5/3655
Abstract: An imaging system includes an array of photodetectors and electronic circuitry associated with the photodetectors to read intensity values from the photodetectors. The electronic circuitry can include an integrator with an integrator capacitor having a nominal capacitance, wherein a gain of the electronic circuitry associated with a photodetector can depend at least in part on the actual capacitance of the integrator capacitor, the actual capacitance differing from the nominal capacitance. The imaging system can be configured to determine a gain factor that depends at least in part on the actual capacitance and/or a signal voltage input to the integrator. The imaging system can be configured to apply the gain factor based at least in part on the actual capacitance of the integrator capacitor calculated. The imaging system can be a thermal imaging system and may include an infrared camera core.
Abstract translation: 成像系统包括与光电检测器相关联的光电检测器和电子电路的阵列，以从光电检测器读取强度值。 电子电路可以包括具有标称电容的积分器电容器的积分器，其中与光电检测器相关联的电子电路的增益至少部分取决于积分电容器的实际电容，实际电容不同于标称电容 。 成像系统可以被配置为确定至少部分地取决于输入到积分器的实际电容和/或信号电压的增益因子。 成像系统可以被配置为至少部分地基于所计算的积分电容器的实际电容来施加增益因子。 成像系统可以是热成像系统，并且可以包括红外相机芯。
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公开(公告)号：US20240240988A1
公开(公告)日：2024-07-18
申请号：US18473668
申请日：2023-09-25
Applicant: Seek Thermal, Inc.
Inventor： William J. Parrish , Andreas Engberg , Jason Wolfe , Derek Moran , Blake Henry , Ross Williams , Russ Mead
CPC classification number: G01J5/0205 , G01J5/0215 , G01J5/0806 , G01J5/20 , H04N23/51 , H04N23/55 , G01J2005/0077
Abstract: An ultra-small thermal imaging core, or micro-core. The design of the micro-core may include substrates for mounting optics and electronic connectors that are thermally matched to the imaging Focal Plane Array (FPA). Test fixtures for test and adjustment that allow for operation and image acquisition of multiple cores may also be provided. Tooling may be included to position the optics to set the core focus, either by moving the lens and lens holder as one or by pushing and/or pulling the lens against a lens positioning element within the lens holder, while observing a scene. Test procedures and fixtures that allow for full temperature calibration of each individual core, as well as providing data useful for uniformity correction during operation may also be included as part of the test and manufacture of the core.
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公开(公告)号：US11353365B2
公开(公告)日：2022-06-07
申请号：US16623751
申请日：2018-06-20
Applicant: Seek Thermal, Inc.
Inventor： William J. Parrish , Andreas Engberg , Jason Wolfe , Derek Moran , Blake Henry , Ross Williams , Russ Mead
IPC: G01J5/02 , G01J5/0806 , G01J5/20 , H04N5/225 , G01J5/00
Abstract: An ultra-small thermal imaging core, or micro-core. The design of the micro-core may include substrates for mounting optics and electronic connectors that are thermally matched to the imaging Focal Plane Array (FPA). Test fixtures for test and adjustment that allow for operation and image acquisition of multiple cores may also be provided. Tooling may be included to position the optics to set the core focus, either by moving the lens and lens holder as one or by pushing and/or pulling the lens against a lens positioning element within the lens holder, while observing a scene. Test procedures and fixtures that allow for full temperature calibration of each individual core, as well as providing data useful for uniformity correction during operation may also be included as part of the test and manufacture of the core.
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公开(公告)号：US10605668B2
公开(公告)日：2020-03-31
申请号：US15843667
申请日：2017-12-15
Applicant: Seek Thermal, Inc.
Inventor： Ross E. Williams , William Parrish , Jason Wolfe
Abstract: A thermography process for thermal imaging systems produced in quantity, including an imaging sensor and an ambient temperature sensor, that includes operations at three different places in the manufacture and actual use of the system. A temperature calibration may be performed on all units of a given design at a small number of controlled scene temperatures at one ambient temperature to produce a function that relates sensor signal to scene temperature. The function is determined for each individual unit and may be unique for each unit. Selected calibrated units may be subjected to a qualification test where they are exposed to larger number of controlled scene temperatures at a plurality of controlled ambient temperatures and the errors between the calibration derived function and the observed results and/or the actual scene temperatures at the various scene/ambient temperature combinations may be derived and put into a table that is loaded into all production units. In actual use of the imaging system, for any given actual observed signal and temperature sensor values, the corresponding scene temperature and/or error may be derived from the table and used to modify the temperature value from the calibration function.
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公开(公告)号：US20200029059A1
公开(公告)日：2020-01-23
申请号：US16051077
申请日：2018-07-31
Applicant: Seek Thermal, Inc.
Inventor： Romeo Chahine , Jason Wolfe , Ross Williams
Abstract: Systems and methods for allocating display colors to thermal image intensity data acquired by thermal band photodetectors are described. The intensity data from the photodetectors, which corresponds to the scene temperature, is usually converted to a digital value falling within the range of the analog to digital conversion (ADC). The full ADC range may be divided into two or more sub-ranges. In at least one sub-range intensity values within that sub-range may be assigned display colors from a first color table utilizing one or more Histogram Equalization (HE) techniques. In at least one other sub-range, specific display values from a color table different from the first may be assigned to specific intensity values. In some embodiments, the HE assigned sub-range may be lower in intensity than the specific assigned sub-range. For a thermal imaging system including thermography, the sub-ranges may correspond to scene temperature ranges, where lower temperatures are assigned colors using HE and higher temperatures are assigned specific colors corresponding to specific temperatures. Such an arrangement is particularly applicable to thermal imaging use by firefighters because the arrangement allows them to determine temperature directly from displayed color for potentially dangerous temperatures. In some cases the sub-range may be applied to certain pixels within desired temperature ranges, and those chosen pixels may be assigned to all or part of a second color table, and in some cases the second color table may be applied to the sub-range pixels by histogram equalization. This arrangement is applicable to highlighting temperatures corresponding to objects, such as humans or animals to make these objects high contrast for search applications.
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