**Digital Processing Techniques for Fringe Analysis** Digital Processing Techniques for Fringe Analysis

Jesús Muñoz Maciel, Francisco Javier Casillas Rodríguez, Miguel Mora González, Francisco Gerardo Peña Lecona and Víctor Manuel Duran Ramírez Jesús Muñoz Maciel, Francisco Javier Casillas Rodríguez, Miguel Mora González, Francisco Gerardo Peña Lecona and

Additional information is available at the end of the chapter Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/66474

Víctor Manuel Duran Ramírez

### Abstract

VIII Preface

Digital image processing techniques are needed in order to recover the object information encoded in fringe patterns generated in a determined interferometric setup. Main fringe analysis techniques are reviewed in order to give the reader the most fundamental insights for the interpretation of interferograms. Phase shifted, open fringe, lateral shear and other types of interferograms make use of specific procedures to correctly retrieving the searched phase. Here, algorithms are described and tested in numerical simulations and real data.

Keywords: fringe analysis, phase recovery, phase unwrapping
