کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10428483 909209 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of CCD nonlinearity on spectrum distribution
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of CCD nonlinearity on spectrum distribution
چکیده انگلیسی
The effect of spectrum distribution from CCD nonlinearity in Fourier transform profilometry is analyzed. Firstly, the spectrum distribution expression from deformed fringe acquired by actual CCD after Fourier transform is given. Secondly, the nonlinearity condition of output deformed fringe from CCD under the actual conditions is discussed, the relationship of spectrum overlapping between first-order spectra which contains object height information and higher-order spectra is analyzed, and its separation condition is discussed. Finally, the discrete deformed fringe expression after sampling aim at pixels signal intensity from CCD is deduced, the Fourier spectrum expression of deformed fringe is obtained, spectrum overlapping and separation caused by sampling are analyzed, and the sampling condition must be satisfied with sampling frequency is given. The results of computer simulation and experiment verify the correctness of the theory analysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - Volume 127, Issue 20, October 2016, Pages 8607-8612
نویسندگان
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