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Publications associées (112)

Phase estimation in digital holographic interferometry using cubic phase function based method

Pramod Rastogi, Sai Siva Gorthi

The paper introduces a cubic-phase-function based method to estimate interference phase in digital holographic interferometry. The proposed method relies on piecewise polynomial approximation of phase by dividing an arbitrary row/column of the complex reco ...

Taylor & Francis2010

Strain estimation in digital holographic interferometry using piecewise polynomial phase approximation based method

Pramod Rastogi, Sai Siva Gorthi, Rajshekhar Gannavarpu

Optical Society of America2010

Fringe Projection Techniques: Whither we are?

Pramod Rastogi, Sai Siva Gorthi

Elsevier2010

Polynomial Wigner-Ville distribution based method for direct phase derivative estimation from optical fringes

Pramod Rastogi, Sai Siva Gorthi, Rajshekhar Gannavarpu

Institute of Physics2009

Piecewise polynomial phase approximation approach for the analysis of reconstructed interference felds in digital holographic interferometry

Pramod Rastogi, Sai Siva Gorthi

This paper proposes a new approach for the analysis of reconstructed interference fields in digital holographic interferometry. In the proposed approach the interference phase to be estimated is conceived as a piecewise polynomial signal; consequently, eac ...

Institute of Physics2009

Adaptive window Wigner-Ville distribution based method to estimate phase derivative from optical fringes

Pramod Rastogi, Sai Siva Gorthi, Rajshekhar Gannavarpu

Optical Society of America2009

Estimation of phase derivatives using discrete chirp- Fourier transform based method

Pramod Rastogi, Sai Siva Gorthi

Optical Society of America2009

Numerical analysis of fringe patterns recorded in holographic interferometry using high-order ambiguity function

Pramod Rastogi, Sai Siva Gorthi

This letter introduces a new approach for the demodulation of fringe patterns recorded in holographic interferometry using high-order ambiguity function (HAF). The proposed approach is capable of retrieving the phase from a single fringe pattern. The main ...

Taylor & Francis2009

Recent developments in interferometry for microsystems metrology

Pramod Rastogi

2009

Strain, curvature and twist measurements in digital holographic interferometry using pseudo Wigner-Ville distribution based method

Pramod Rastogi, Sai Siva Gorthi, Rajshekhar Gannavarpu

American Institute of Physics2009

Discrete chirp Fourier transform based analysis of reconstructed interference fields in digital holographic interferometry

Pramod Rastogi, Sai Siva Gorthi

Taylor & Francis2009

Windowed high-order ambiguity function method for fringe analysis

Pramod Rastogi, Sai Siva Gorthi

American Institute of Physics2009

Simultaneous measurement of displacement, strain and curvature in digital holographic interferometry using high- order instantaneous moments

Pramod Rastogi, Sai Siva Gorthi

2009

Analysis of reconstructed interference fields in digital holographic interferometry using polynomial phase transform

Pramod Rastogi, Sai Siva Gorthi

Institute of Physics2009

Phase-step estimation in interferometry via an unscented Kalman filter

Pramod Rastogi, Abhijit Patil

We present an unscented Kalman filter to identify the phase step imparted to a piezoelectric transducer in phase shifting interferometry in the presence of Gaussian noise. The advantage of the proposed algorithm lies in its ability to determine the phase s ...

2009

Improved high-order ambiguity function method for the estimation of phase from interferometric fringes

Pramod Rastogi, Sai Siva Gorthi

Optical Society of America2009

Diffusion measurements by optical methods: Recent advances and applications

Pramod Rastogi

2008

Generalized linear prediction method in phase-shifting interferometry in the presence of noise

Pramod Rastogi, Abhijit Patil, Rajesh Langoju

The effectiveness of phase-shifting interferometry (PSI) techniques employing piezoelectric device PZT in the estimation of phase depends largely on the accuracy with which the phase shifts are imparted to the device and the noise influencing the measureme ...

Elsevier2007

Statistical study of generalized nonlinear phase step estimation methods in phase-shifting interferometry

Pramod Rastogi, Abhijit Patil, Rajesh Langoju

2007

Real-time phase-step estimation in phase-shifting interferometry

Pramod Rastogi, Abhijit Patil, Rajesh Langoju

2007

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