TITLE

Windowed high-order ambiguity function method for fringe analysis

AUTHOR(S)
Gorthi, Sai Siva; Rastogi, Pramod
PUB. DATE
July 2009
SOURCE
Review of Scientific Instruments;Jul2009, Vol. 80 Issue 7, p073109
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This paper introduces a windowed high-order ambiguity function (WHAF) method for the demodulation of fringe patterns recorded in holographic interferometry. It first obtains the analytic signal of the fringe pattern and models it as a piecewise polynomial phase signal. A parametric estimation procedure based on HAF is then employed to calculate the polynomial coefficients of the phase over each window of the segmented analytic signal. A salient feature of the proposed method is that it provides an accurate and direct estimation of the unwrapped phase distribution from a single fringe pattern, even when the pattern’s phase is rapidly varying. WHAF’s application to both digital and classical holographic interferometry is demonstrated by simulation and experimental results.
ACCESSION #
43494134

 

Related Articles

  • Strain, curvature, and twist measurements in digital holographic interferometry using pseudo-Wigner–Ville distribution based method. Rajshekhar, G.; Gorthi, Sai Siva; Rastogi, Pramod // Review of Scientific Instruments;Sep2009, Vol. 80 Issue 9, p093107 

    Measurement of strain, curvature, and twist of a deformed object play an important role in deformation analysis. Strain depends on the first order displacement derivative, whereas curvature and twist are determined by second order displacement derivatives. This paper proposes a...

  • Direct spectral phase measurement with Spectral Interferometry Resolved in Time Extra Dimensional. Bigourd, D.; Luce, J.; Mazataud, E.; Hugonnot, E.; Rouyer, C. // Review of Scientific Instruments;May2010, Vol. 81 Issue 5, p053105 

    The complete spectral characterization of ultrashort pulses is demonstrated with a new diagnostic called Spectral Interferometry Resolved in Time Extra Dimensional. This method, based on spectral shearing interferometry, is self-referenced and self-calibrated. It yields directly to an...

  • Spatial filtering of holographic lateral-shear interferograms for control of negative-lens aberrations. II. Gusev, V. G. // Russian Physics Journal;Oct2005, Vol. 48 Issue 10, p1064 

    The conditions for lateral-shear interferogram formation in diffusively scattered fields are analyzed taking into account hologram aberrations for the case of transverse displacement of a mat screen and a negative lens before second photoplate exposure. It is shown that the error of control of...

  • Human Skull Analysis by Photorefractive Holographic Interferometry. Caroena, Glaura; Mori, Matsuyoshi; Gesualdi, Marcos R. R.; Boldrini, Silvia C.; Ferrara, Eduardo; Muramatsu, Mikiya // AIP Conference Proceedings;4/15/2008, Vol. 992 Issue 1, p326 

    The holographic interferometry is a powerful optical method for observation of the disturbance phenomena and in the analysis, being extremely useful in application basic, biomedical and technological research. In this work we have analyzed some strains that occur during the masticatory process,...

  • Holographic lateral shearing interferometry with the displacement of an object under study. Lyalikov, A. // Optics & Spectroscopy;May2007, Vol. 102 Issue 5, p804 

    A new method of the holographic lateral shearing interferometry is considered. In the method, the recording of the reference holographic lateral shear interferogram is followed by the displacement of an object under study by a distance equal to the lateral shear. The method provides the...

  • Observing Deformation and Fracture of Rock with Speckle Patterns. Haggerty, M.; Lin, Qing; Labuz, J. // Rock Mechanics & Rock Engineering;Jul2010, Vol. 43 Issue 4, p417 

    The high resolution technique of electronic speckle pattern interferometry (ESPI) can be very useful in determining deformation of laboratory specimens and identifying initiation of failure. The in-plane ESPI theory is described and the fringe pattern of the processed ESPI image is analyzed to...

  • Multiple-exposure holographic interferometry with rotation of a recording medium for investigation of fast processes. Lyalikov, A. M. // Optics & Spectroscopy;Mar2006, Vol. 100 Issue 3, p463 

    Some specific features of recording holograms with rotation of a recording medium between exposures are considered. It is shown that the rotation of the recording medium makes it possible to exclude completely the effect of aberrations of the recording/rerecording system in the formation of...

  • Detection of Occludable Angles with the Pentacam and the Anterior Segment Optical Coherence Tomography. Samin Hong; Jeong-Ho Yi; Sung Yong Kang; Gong Je Seong; Chan Yun Kim // Yonsei Medical Journal;8/31/2009, Vol. 50 Issue 4, p525 

    Purpose: To assess efficacy of the Pentacam (PTC) and the anterior segment optical coherence tomography (AOCT) for detection of occludable angles. Materials and Methods: Fourty-one eyes with gonioscopically diagnosed occludable angles and 32 normal open-angle eyes were included. Anterior chamber...

  • Holographic reverse shearing interferometry with high measurement sensitivity. Lyalikov, A. M. // Optics & Spectroscopy;Jul2006, Vol. 101 Issue 1, p162 

    The possibility of studying phase objects by reverse shearing interferometry with high measurement sensitivity is demonstrated. Phase objects are studied in two stages. In the first stage, holographic reverse shear interferograms are measured with and without an object under nonlinear conditions...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics