2 DIRECTIONAL SPATIAL-CARRIER PHASE-SHIFTING METHOD FOR ANALYSIS OF CROSSED AND CLOSED FRINGE PATTERNS

Various interferometric and fringe projection techniques may result in crossed and closed fringe patterns with the information about the phe nomena tested. Recent applications require the analysis on the basis o f a single fringe pattern. Here, we address two problems: simultaneous analysis of the information about two events, and analysis of fringe pattern with high phase gradients in both x and y directions. The anal ysis of a fringe pattern is performed by the spatial-carrier phase-shi fting method used sequentially for x and y sampling directions, The er ror analysis of the method in reference to both problems is presented.