Yazar "Durmus, Cagla" seçeneğine göre listele

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    Öğe
    3D Profile Measurements of Objects by Using Zero Order Generalized Morse Wavelet
    (Amer Inst Physics, 2017) Kocahan, Ozlem; Durmus, Cagla; Elmas, Merve Naz; Coskun, Emre; Tiryaki, Erhan; Ozder, Serhat
    Generalized Morse wavelets are proposed to evaluate the phase information from projected fringe pattern with the spatial carrier frequency in the x direction. The height profile of the object is determined through the phase change distribution by using the phase of the continuous wavelet transform. The phase distribution is extracted from the optical fringe pattern choosing zero order Generalized Morse Wavelet (GMW) as a mother wavelet. In this study, standard fringe projection technique is used for obtaining images. Experimental results for the GMW phase method are compared with the results of Morlet and Paul wavelet transform.
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    Öğe
    Optical Phase Distribution Evaluation by Using Zero Order Generalized Morse Wavelet
    (Amer Inst Physics, 2017) Kocahan, Ozlem; Elmas, Merve Naz; Durmus, Cagla; Coskun, Emre; Tiryaki, Erhan; Ozder, Serhat
    When determining the phase from the projected fringes by using continuous wavelet transform (CWT), selection of wavelet is an important step. A new wavelet for phase retrieval from the fringe pattern with the spatial carrier frequency in the x direction is presented. As a mother wavelet, zero order generalized Morse wavelet (GMW) is chosen because of the flexible spatial and frequency localization property, and it is exactly analytic. In this study, GMW method is explained and numerical simulations are carried out to show the validity of this technique for finding the phase distributions. Results for the Morlet and Paul wavelets are compared with the results of GMW analysis.
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    Öğe
    Quantitative Phase Imaging of Red Blood Cell by Diffraction Phase Microscopy
    (IEEE, 2017) Kocahan, Ozlem; Tiryaki, Erhan; Durmus, Cagla; Elmas, Merve Naz; Coskun, Emre; Ozder, Serhat
    Diffraction phase microscopy maintains the single shot measurement and low speckle noise associated with white light. A microscope with halogen lamp and a Mach-Zehnder interferometer were combined to obtain images of red blood cell with fringe pattern. From these images, the phase values were retrieved by using continuous wavelet transform (CWT) phase method. In the analysis of CWT, Paul wavelet is chosen as a mother wavelet. Experimental results of the CWT phase method with Paul wavelet are discussed at the end of the study.