Abstract:Abstract. Several metrological applications base their measurement principle in the phase sum or difference between two patterns, one original s(r,) and another modified t(r,+). Additive or differential phase shifting algorithms directly recover the sum 2+ or the difference of phases without requiring prior calculation of the individual phases. These algorithms can be constructed, for example, from a suitable combination of known phase shifting algorithms. Little has been written on the design, analy… Show more
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