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Analysis of the Modulation Transfer Function Spectral Variation in Different Detector Arrays by Means of Speckle Patterns

机译:利用散斑图分析不同检测器阵列中调制传递函数谱的变化

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摘要

Today, CCD and CMOS detector arrays present excellent features in imaging systems. To investigate the suitability of each technology according to various applications, in this work we have comparatively studied the quality of the images provided by different cameras. To this end we have used the speckle method to determine the modulation transfer function (MTF) at different wavelengths of the visible spectrum for the detectors of a low-cost CCD video camera and of two scientific cameras (CCD and CMOS). For both the low-cost CCD and the scientific CMOS detectors, the differences between the MTF curves intensify as the spatial frequency augments, while the MTF decreases as the wavelength increases. For the scientific CCD detector, the MTF spectral behavior does not show this trend, and the differences between the MTF curves corresponding to extreme wavelengths are not expected to be significant, as opposed to what appears for the scientific CMOS detector.
机译:如今,CCD和CMOS检测器阵列在成像系统中具有出色的功能。为了研究每种技术根据各种应用的适用性,在这项工作中,我们比较研究了不同相机提供的图像质量。为此,我们已经使用斑点法来确定低成本CCD摄像机和两个科学摄像机(CCD和CMOS)的探测器在可见光谱的不同波长处的调制传递函数(MTF)。对于低成本CCD和科学CMOS探测器,MTF曲线之间的差异随着空间频率的增加而加剧,而MTF随波长的增加而减小。对于科学CCD检测器,与科学CMOS检测器相反,MTF光谱行为并未显示出这种趋势,与极端波长相对应的MTF曲线之间的差异预计不会很大。

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  • 来源
    《Journal of Imaging Science and Technology》 |2009年第3期|33-38|共6页
  • 作者单位

    Departamento de Optica, Facultad de Ciencias Universidad de Granada Edificio Mecenas,Campus Fuentenueva s. 18071 Granada, Spain;

    Departamento de Optica, Facultad de Ciencias Universidad de Granada Edificio Mecenas,Campus Fuentenueva s. 18071 Granada, Spain;

    Departamento de Optica, Facultad de Ciencias Universidad de Granada Edificio Mecenas,Campus Fuentenueva s. 18071 Granada, Spain;

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