Title :
Speckle reduction using the discrete Fourier filtering technique
Author :
Maycock, Jonathan ; Hennelly, B.M. ; McDonald, J.B. ; Frauel, Y. ; Castro, A. ; Javidi, Bahram ; Naughton, T.J.
Author_Institution :
Nat. Univ. of Ireland Maynooth, Maynooth
Abstract :
We present a digital signal processing technique that reduces the speckle content in reconstructed digital holograms. The method is based on sequential sampling of the discrete Fourier transform of the reconstructed image field. The resulting images show a reduction in speckle.
Keywords :
discrete Fourier transforms; filtering theory; holography; image reconstruction; image sampling; speckle; digital signal processing; discrete Fourier filtering; discrete Fourier transform; image reconstruction; reconstructed digital hologram; sequential sampling; speckle reduction; Apertures; Digital filters; Discrete Fourier transforms; Filtering; Holography; Image reconstruction; Machine vision; Optical filters; Optical recording; Speckle;
Conference_Titel :
Machine Vision and Image Processing Conference, 2007. IMVIP 2007. International
Conference_Location :
Kildare
Print_ISBN :
978-0-7695-2887-8
DOI :
10.1109/IMVIP.2007.24
