Abstract
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In a recent published work we proposed a technique to recover
the absolute phase maps of two fringe patterns with different spatial
frequencies. It is demonstrated that a number of selected frequency pairs
can be used for the proposed approach, but the published work did not
provide a guideline for frequency selection. In addition, the performance of
the proposed technique in terms of its anti-noise capability is not addressed.
In this paper, the rules for selecting the two frequencies are presented based
on theoretical analysis of the proposed technique. Also, when the two
frequencies are given, the anti-noise capability of technique is formulated
and evaluated. These theoretical conclusions are verified by experimental
results.