Serhat Özder
Çanakkale Onsekiz Mart University
37 Papers
131 Citations
Serhat Özder is an academic researcher from Çanakkale Onsekiz Mart University. The author has contributed to research in topics: Wavelet & Transmittance. The author has an hindex of 9, co-authored 37 publications. Previous affiliations of Serhat Özder include Gebze Institute of Technology.
Chat about Author
Papers
Optical phase distribution evaluation by using an S-transform
TL;DR: An experimental study of the use of an S-transform to evaluate the phase distribution from a two-dimensional fringe pattern by introducing the carrier frequencies in two spatial directions, x and y, is presented.
31
Holographic recording study of a hybrid liquid crystal system doped with dye and fullerene
TL;DR: In this article, an anthraquinone dye (Disperse Blue 14), and Fullerene (C60) are doped at the same time to nematic liquid crystal host.
25
A novel approach for the determination of birefringence dispersion in nematic liquid crystals by using the continuous wavelet transform
TL;DR: In this article, the continuous wavelet transform using the Morlet wavelet was applied to analyse the transmittance signal of 5CB and ZLI-6000 coded nematic liquid crystals.
24
Determination of phase from the ridge of CWT using generalized Morse wavelet
Abstract: The selection of wavelet is an important step in order to determine the phase from the fringe patterns. In the present work, a new wavelet for phase retrieval from the ridge of continuous wavelet transform (CWT) is presented. The phase distributions have been extracted from the optical fringe pattern by choosing the zero order generalized morse wavelet (GMW) as a mother wavelet. The aim of the study is to reveal the ways in which the two varying parameters of GMW affect the phase calculation. To show the validity of this method, an experimental study has been conducted by using the diffraction phase microscopy (DPM) setup; consequently, the profiles of red blood cells have been retrieved. The results for the CWT ridge technique with GMW have been compared with the results for the Morlet wavelet and the Paul wavelet; the results are almost identical for Paul and zero order GMW because of their degree of freedom. Also, for further discussion, the Fourier transform and the Stockwell transform have been applied comparatively. The outcome of the comparison reveals that GMWs are highly applicable to the research in various areas, predominantly biomedicine.
17
The Paul wavelet algorithm: an alternative approach to calculate the refractive index dispersion of a dielectric film from transmittance spectrum
TL;DR: In this paper, a new application of the Paul wavelet algorithm was presented to determine the refractive index dis- persion of a dielectric film from transmittance spectrum in the visible and near infrared region.
13