Gain calibration for an imaging system
    79.
    发明授权
    Gain calibration for an imaging system 有权
    为成像系统增益校准

    公开(公告)号:US09595934B2

    公开(公告)日:2017-03-14

    申请号:US14829490

    申请日:2015-08-18

    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。

    Apparatus and method for determining sparkle
    80.
    发明授权
    Apparatus and method for determining sparkle 有权
    用于确定闪光的装置和方法

    公开(公告)号:US09411180B2

    公开(公告)日:2016-08-09

    申请号:US13354827

    申请日:2012-01-20

    Abstract: An apparatus and method for determining and quantifying “sparkle”—the random noise that is generated when a pixelated image is viewed through a roughened surface of a transparent sample. The apparatus includes a pixelated source and an imaging system located in an optical path originating from the pixelated source, wherein a transparent sample may be placed in the optical path between the pixelated source and the optical system. The degree of sparkle is determined by obtaining an integrated image for the pixelated image; and calculating a standard deviation of the integrated pixel power. An objective level of sparkle can be defined by correlating the amount of sparkle provided by the apparatus with visual impressions.

    Abstract translation: 用于确定和量化“闪烁”的装置和方法 - 当通过透明样品的粗糙表面观察像素化图像时产生的随机噪声。 该装置包括位于源自像素化源的光路中的像素化源和成像系统,其中可以将透明样品放置在像素化源和光学系统之间的光路中。 通过获得用于像素化图像的积分图像来确定闪光度; 并计算积分像素功率的标准偏差。 可以通过将设备提供的闪光量与视觉印象相关联来定义闪光的客观水平。

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