|
|
|
|
Defocusing Effect Studies in Mtf of Ccd Cameras Based on Psf Measuring Technique
|
|
|
|
|
|
|
|
نویسنده
|
Shahbazi Amir Hossein ,Madanipour Khosro ,Koohian Ata
|
|
منبع
|
International Journal Of Optics And Photonics - 2015 - دوره : 9 - شماره : 2 - صفحه:87 -92
|
|
|
|
|
چکیده
|
Defocusing effects in modulation transfer function (mtf) measurement of charge coupled device (ccd) cameras is the main focus of current paper. we introduce measuring point-spread function (psf) in order to calculate the mtf and further more we will study the shape of mtf and its cut-off frequency by adjusting the lens focusing in different locations. a collimated white light led by broadband spectra is used as source and our results shows that the cut-off frequency is related to defocusing.
|
|
کلیدواژه
|
Ccd ,Cut-Off Frequency ,Defocusing ,Mtf ,Psf.
|
|
آدرس
|
University Of Tehran, University Of Tehran, ایران, Amirkabir University Of Technology, Amirkabir University Of Technology, ایران, University Of Tehran, University Of Tehran, ایران
|
|
پست الکترونیکی
|
koohian@ut.ac.ir
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Authors
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|