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- W2087352821 abstract "The vectorial shearing interferometer includes a pair of wedge prisms as a shearing system. Perfect alignment of the shearing system is crucial for the optimal detection and analysis of asymmetrical wave fronts. This paper describes a recognition algorithm for optical misalignment detection and prisms orientation based in the intensity pattern obtained in the calibration process. The key of the present algorithm is the comparison of a reference intensity pattern, against a sheared interferogram that depends on the wedge prism position. First, an optimum phase only filter is obtained from a set of reference images with the objective to discriminate between different phase changes. Then, the optimal filter is used in a digital correlator, which results in a simple and robust calibration system." @default.
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- W2087352821 date "2008-08-28" @default.
- W2087352821 modified "2023-09-26" @default.
- W2087352821 title "Alignment of vectorial shearing interferometer using a simple recognition algorithm" @default.
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- W2087352821 doi "https://doi.org/10.1117/12.795748" @default.
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