Local fringe density determination by adaptive filtering

Vargas Balbuena, JavierQuiroga Mellado, Juan AntonioBelenguer Dávila, Tomás2023-06-202023-06-202011-01-010146-959210.1364/OL.36.000070https://hdl.handle.net/20.500.14352/43963© 2010 Optical Society of AmericaWe demonstrate a method to easily and quickly determine the local fringe density map of a fringe pattern. The method is based on an isotropic adaptive bandpass filter that is tuned at different frequencies. The modulation map after applying a specific bandpass frequencies filter presents a maximum response in the regions where the bandpass filter and fringe frequencies coincide. We show a set of simulations and experimental results that prove the effectiveness of the proposed method.engLocal fringe density determination by adaptive filteringjournal articlehttp://dx.doi.org/10.1364/OL.36.000070http://www.opticsinfobase.org/open access535PatternsOrientationAlgorithmÓptica (Física)2209.19 Óptica Física