Title :
Fast Gabor transform for video-rate phase retrieval from SPIDER interferograms
Author :
Bethge, Jens ; Grebing, Christian ; Steinmeyer, Günter
Author_Institution :
Max-Born-Inst., Berlin
Abstract :
This paper demonstrates a fast Gabor transform, enabling SPIDER phase retrieval with live update rates of several Hertz. This method combines the processing speed of the Takeda algorithm with the enhanced robustness of wavelet-based phase retrieval. Moreover, this algorithm allows for adjustment of the aspect ratio of the Heisenberg box to match the spectral resolution of the SPIDER method, which further suppresses spurious phase ripple.
Keywords :
image reconstruction; light interferometry; Heisenberg box; SPIDER interferograms; Takeda algorithm; fast Gabor transform; phase ripple; spectral phase reconstruction; spectral resolution; video-rate phase retrieval; wavelet-based phase retrieval; Fast Fourier transforms; Frequency; Holography; Interferometry; Optimized production technology; Phase measurement; Pulse measurements; Robustness; Shape measurement; Spectrogram;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386309
