کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1541487 996684 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The influence of hologram aperture on speckle noise in the reconstructed image of digital holography and its reduction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
The influence of hologram aperture on speckle noise in the reconstructed image of digital holography and its reduction
چکیده انگلیسی

Based on the whole process of the recording and reconstruction of digital holography, we study the formation cause of speckle noise in its reconstructed image and acquire the conclusion that the small size of hologram aperture diffraction aggravates the speckle noise of reconstructed image and the speckle noise has been one of primary noise sources in the reconstruction process. In order to reduce the speckle noise resulting from little hologram aperture diffraction, we set an appropriate aperture function matching the recording parameter and aperture size of hologram and deconvolve the reconstructed image with it. The validity has been proved in theory and experiment. Therefore, it offers a brand-new thought and practical way to reduce the speckle noise in the reconstructed image of digital holography.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 281, Issue 2, 15 January 2008, Pages 232–237
نویسندگان
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