One of the powerful approaches to demodulate a single fringe pattern is the regularized phase tracking (RPT) technique. Here, a new improvement in the RPT technique is presented. This new improvement consists in the addition of one term that models the fringe-pattern modulation. With this new term, the RPT technique can be used for the demodulation of nonnormalized fringe patterns. The performance of the improved RPT technique is shown on examples of various fringe patterns.
© 2002 Optical Society of America
(100.2650) Image processing : Fringe analysis
(100.5070) Image processing : Phase retrieval
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
Ricardo Legarda-Sáenz, Wolfgang Osten, and Werner Jüptner, "Improvement of the Regularized Phase Tracking Technique for the Processing of Nonnormalized Fringe Patterns," Appl. Opt. 41, 5519-5526 (2002)