دوره 9، شماره 2 - ( 8-1394 )
جلد 9 شماره 2 صفحات 92-87 |
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Shahbazi A H, Madanipour K, Koohian A. Defocusing Effect Studies in MTF of CCD Cameras Based on PSF Measuring Technique. IJOP 2015; 9 (2) :87-92
URL: http://ijop.ir/article-1-203-fa.html
URL: http://ijop.ir/article-1-203-fa.html
Defocusing Effect Studies in MTF of CCD Cameras Based on PSF Measuring Technique. . 1394; 9 (2) :87-92
چکیده: (7137 مشاهده)
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.
نوع مطالعه: كاربردي |
موضوع مقاله:
عمومى
دریافت: 1393/11/11 | ویرایش نهایی: 1394/9/1 | پذیرش: 1394/2/22 | انتشار: 1394/9/1
دریافت: 1393/11/11 | ویرایش نهایی: 1394/9/1 | پذیرش: 1394/2/22 | انتشار: 1394/9/1
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