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Appl Opt. 1994 Oct 10;33(29):6873-8. doi: 10.1364/AO.33.006873.

Fringe-orientation maps and fringe skeleton extraction by the two-dimensional derivative-sign binary-fringe method.


The fringe-orientation information of an interferometric fringe pattern is provided in the form of a fringe-orientation map by spin filtering. The fringe-orientation information is an important feature of fringe patterns and is helpful in many fringe-pattern processing algorithms. With the help of a fringe-orientation map the two-dimensional derivative-sign binary-fringe method is developed to extract fringe skeletons from a fringe pattern with an arbitrary fringe distribution. This fringe skeleton extraction method does not require thresholds and a thinning process. It is relatively robust and highly accurate.


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