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year 27, Issue 2 (ICOP & ICPET 2021 2021)
ICOP & ICPET _ INPC _ ICOFS 2021, 27(2): 454-457 |
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Shamsi E, Ramezani A, Madanipour K. Examine the effects of scatterer particles in illustration process with measurement of MTF by digital moiré technique. ICOP & ICPET _ INPC _ ICOFS 2021; 27 (2) :454-457
URL: http://opsi.ir/article-1-2401-en.html
URL: http://opsi.ir/article-1-2401-en.html
1- Department of Physics, Amir Kabir University of Technology, Optical Measurement Central Laboratory & Optics Research Group, Amir Kabir University of Technology
Abstract: (951 Views)
In this work, we examine the effect of scatterer particles on illustration process with measurement of MTF by moiré technique. In this technique we capture some picture in different distance from a Ronchi grating by CCD camera. Images are transferred to a PC, and by use of software rotating each image by θ/2 and −θ/2, and superimposing them. The average transmittance function of the superimposed image gratings is measured in a moiré fringe interval by scanning the moiré pattern by a virtual slit parallel to moiré fringes. With the latter function the MTF of the CCD can be deduced. The effects of scatterer particles on quality of images is obvious on reducing of MTF.
Keywords: Moiré Technique, Modulation Transfer Function, Transmittance Function, Scatterer particles
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