Fixed pattern noise in high-resolution, CCD readout photon-counting detectors
Fixed pattern noise in high-resolution, CCD readout photon-counting detectors
复制标题
高分辨率 CCD 读出光子计数探测器中的固定图案噪声
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
H. Kawakami
中科院分区：
文献类型：
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作者：
R. Michel;J. Fordham;H. Kawakami
用高分辨率CCD读出光子计数探测器获得的图像质量可能受到图像调制或由质心误差引起的固定图案噪声的很大影响。在本文中，我们研究的因素，有助于这种调制，特别是它表明，由CCD相机检测到的事件宽度的照明水平和变化可以有很大的影响。它还表明，通过使用基于高斯拟合的质心算法，调制可以最小化。
The image quality obtained with high-resolution, CCD readout photon-counting detectors can be greatly affected by an image modulation or fixed pattern noise that results from errors in centroiding. In this paper we study the factors that contribute to this modulation, in particular where it is shown that the illumination level and variations in event width as detected by the CCD camera can have a large effect. It is also shown that by using a centroiding algorithm based on Gaussian fitting, the modulation can be minimized.