Fringe Analysis Based On an Adaptive Windowed Fourier Transform

Details Fringe Analysis Based On an Adaptive Windowed Fourier Transform Fringe Analysis Based On an Adaptive Windowed Fourier Transform

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1236..135z&link_type=abstract

INTERNATIONAL CONFERENCE ON ADVANCED PHASE MEASUREMENT METHODS IN OPTICS AND IMAGING. AIP Conference Proceedings, Volume 1236,

Physics

Optics

Fourier Transform Optics, Optical Windows, Adaptive Optics, Frequency Measurement, Pattern Recognition, Fourier Optics, Filters, Zone Plates, And Polarizers, Remote Sensing, Lidar And Adaptive Systems, Optical Frequency Converters, Pattern Recognition

Scientific paper

The Fourier transform method has highest frequency resolution but the lowest space resolution, which results in the fundamental spectrum at one position overlapping with higher spectrum at other positions. In order to balancing the frequency and space resolution, an adaptive multiscale windowed Fourier transform technique for the phase analysis of fringe patterns, in which the window size is determined by the local stationary length and the local stationary length of signal can be measured by the instantaneous frequency gradient, is presented in this paper. The numerical simulation has proved the validity of this method.

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