MTF spectral-variation comparison of detector arrays used in multispectral imaging systems by speckle patterns
In this work, we have analysed the quality of the images provided by different cameras by the speckle method. For this, we have comparatively studied 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 (a CCD and a CMOS).
For the CCD detector of the video camera, the highest value of the MTF was reached at the lowest of the wavelengths studied. Furthermore, the differences between the MTF curves corresponding to the different wavelengths analysed become more notable as the spatial frequency increases.
In the case of scientific cameras, the behaviour of the MTF with wavelength does not present the same trend as that observed for the low-cost video camera. For each of the three wavelengths studied, the CCD detector presented MTF values higher than those of the CMOS detector.
Document Type: Research Article
Publication date: January 1, 2008
Started in 2002 and merged with the Color and Imaging Conference (CIC) in 2014, CGIV covered a wide range of topics related to colour and visual information, including color science, computational color, color in computer graphics, color reproduction, volor vision/psychophysics, color image quality, color image processing, and multispectral color science. Drawing papers from researchers, scientists, and engineers worldwide, DGIV offered attendees a unique experience to share with colleagues in industry and academic, and on national and international standards committees. Held every year in Europe, DGIV papers were more academic in their focus and had high student participation rates.
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