2026-06-27T10:26:52Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/587782023-08-25T15:33:51Zcom_20.500.14352_14col_20.500.14352_15

Quiroga Mellado, Juan Antonio Servín Guirado, Manuel Cuevas de la Rosa, Francisco Javier 2023-06-20T18:51:10Z 2023-06-20T18:51:10Z 2002-08 0740-3232 10.1364/JOSAA.19.001524 https://hdl.handle.net/20.500.14352/58778 http://dx.doi.org/10.1364/JOSAA.19.001524 http://www.opticsinfobase.org/ The fringe orientation angle provides useful information for many fringe-pattern-processing techniques. From a single normalized fringe pattern (background suppressed and modulation normalized), the fringe orientation angle can be obtained by computing the irradiance gradient and performing a further aretangent computation. Because of the 180° ambiguity of the fringe direction, the orientation angle computed from the gradient of a single fringe pattern can be determined only modulo pi. Recently, several studies have shown that a reliable determination of the fringe orientation angle modulo 2π is a key point for a robust demodulation of the phase from a single fringe pattern. We present an algorithm for the computation of the modulo 2π fringe orientation angle by unwrapping the orientation angle obtained from the gradient computation with a regularized phase tracking method. Simulated as well as experimental results are presented. eng open access Modulo 2π fringe orientation angle estimation by phase unwrapping with a regularized phase tracking algorithm journal article