Regular papers

An alternative method for phase-unwrapping of interferometric data

¹ Unidad Académica de Ingeniería Eléctrica, Universidad Autónoma de Zacatecas, Antiguo Camino a la Bufa No. 1, Col. Centro. C. P. 98000, Zacatecas, Zac. México
² Luis Enrique Erro No. 1, Santa María Tonantzintla, San Andrés Cholula, C.P. 72840, Puebla, México
³ Unidad Académica de Física, Universidad Autónoma de Zacatecas, Calzada Solidaridad Esquina con Paseo a la Bufa S\N. Col. Centro. C. P. 98000, Zacatecas, Zac. México
⁴ CIATEQ Unidad Querétaro, México, On sabbatical leave from Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México

^a gonzalez_efren@hotmail.com
^b jvillah@yahoo.com
^c berval@inaoep.mx
^d ismaelrv@yahoo.com
^e tsaucedo@fisica.uaz.edu.mx
^f meneses@unam.mx

Received: 28 March 2014
Revised: 5 June 2014
Revised: 8 August 2014

Abstract

In this paper we present a novel algorithm for phase unwrapping where only a subset of data from the wrapped phase map is used to reconstruct the unwrapped phase map as a linear combination of radial basis functions (RBF’s). For noisy phase maps this algorithm gives better results than three reference algorithms based on radial basis functions, Zernike polynomials and path dependent phase unwrapping strategies.