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    • 6. 发明授权
    • Method for determining the components of image noise patterns of an imaging device and use of this method in an imaging device
    • 用于确定成像装置的图像噪声图案的分量的方法以及在成像装置中使用该方法
    • US06584233B1
    • 2003-06-24
    • US09356584
    • 1999-07-19
    • Paul J. KaneTheodore F. BoukPeter D. Burns
    • Paul J. KaneTheodore F. BoukPeter D. Burns
    • G06K940
    • G06K9/40H04N5/21H04N17/00
    • A method and a computer program for determining at least one component of a noise pattern of an imaging device. The method comprises the steps of: providing flat field data; forming a preliminary estimate of banding components by computing one-dimensional averages of the flat field data and carrying out a Fourier analysis of the one dimensional averages; determining the banding components by carrying out a two-dimensional Fourier analysis of the original flat field data, and comparing the result to the preliminary estimate; removing the banding components from the flat field data, to obtain modified flat field data; forming a second preliminary estimate of streaking components by carrying out a Fourier analysis on the modified flat field data; determining the two-dimensional random noise statistics by carrying out a Fourier analysis on the modified flat field data; and determining the streaking components by modifying the preliminary estimate of the streaking components with the two-dimensional random noise statistics.
    • 一种用于确定成像装置的噪声图案的至少一个分量的方法和计算机程序。 该方法包括以下步骤:提供平坦场数据; 通过计算平坦场数据的一维平均值并对一维平均值进行傅立叶分析,形成条带分量的初步估计; 通过对原始平场数据进行二维傅立叶分析,并将结果与​​初步估计进行比较,确定条带分量; 从扁平场数据中去除条带组件,以获得修改的平场数据; 通过对修改的平场数据进行傅立叶分析,形成条纹分量的第二初步估计; 通过对修正的平场数据进行傅立叶分析来确定二维随机噪声统计; 以及通过用二维随机噪声统计修改条纹分量的初步估计来确定条纹分量。