Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/96550
Title: Transport-of-intensity phase imaging using Savitzky-Golay differentiation filter : theory and applications
Authors: Zuo, Chao
Chen, Qian
Yu, Yingjie
Asundi, Anand Krishna
Keywords: DRNTU::Engineering::Mechanical engineering::Motor vehicles
Issue Date: 2013
Source: Zuo, C., Chen, Q., Yu, Y., & Asundi, A. K. (2013). Transport-of-intensity phase imaging using Savitzky-Golay differentiation filter - theory and applications. Optics express, 21(5), 5346-5362.
Series/Report no.: Optics express
Abstract: Several existing strategies for estimating the axial intensity derivative in the transport-of-intensity equation (TIE) from multiple intensity measurements have been unified by the Savitzky-Golay differentiation filter - an equivalent convolution solution for differentiation estimation by least-squares polynomial fitting. The different viewpoint from the digital filter in signal processing not only provides great insight into the behaviors, the shortcomings, and the performance of these existing intensity derivative estimation algorithms, but more important, it also suggests a new way of improving solution strategies by extending the applications of Savitzky-Golay differentiation filter in TIE. Two novel methods for phase retrieval based on TIE are presented - the first by introducing adaptivedegree strategy in spatial domain and the second by selecting optimal spatial frequencies in Fourier domain. Numerical simulations and experiments verify that the second method outperforms the existing methods significantly, showing reliable retrieved phase with both overall contrast and fine phase variations well preserved.
URI: https://hdl.handle.net/10356/96550
http://hdl.handle.net/10220/9918
ISSN: 1094-4087
DOI: 10.1364/OE.21.005346
Rights: © 2013 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official DOI: http://dx.doi.org/10.1364/OE.21.005346. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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