title   
  

Differentiation method for phase recovery

Özcan, Meriç (2015) Differentiation method for phase recovery. In: Conference on Practical Holography XXIX - Materials and Applications, San Francisco, CA

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Official URL: http://dx.doi.org/10.1117/12.2078106

Abstract

Here we consider a derivative based method for phase recovery and demonstrate a numerical method that can be described as differentiate and cross multiply operation to obtain the phase gradient. This method uses quadrature phase data that is in sine and cosine form, which is a natural outcome many interferometric measurements including that of digital holographic reconstruction. Since the differentiation is performed on trigonometric functions which are discrete, it is shown that the method of differentiation and the sampling rate are important considerations especially for the noise corrupt signals. The method is initially developed for ID phase signals, and then later extended to 2D. Noise performance of the method is also investigated, and it is shown that for extremely noisy signals the method can be adapted to an iteration routine which recovers the phase successfully. We present simulations and the experimental results which show the validity of the approach.

Item Type:Papers in Conference Proceedings
Additional Information:Article Number: 938606
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1-4661 Electrical engineering. Electronics Nuclear engineering
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800-8360 Electronics
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800-8360 Electronics > TK8300-8360 Photoelectronic devices (General)
ID Code:28889
Deposited By:Meriç Özcan
Deposited On:24 Dec 2015 15:23
Last Modified:24 Dec 2015 15:23

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