Design of phase shifting algorithms: fringe contrast maximum
نویسندگان
چکیده
منابع مشابه
Shannon information storage in fringe-patterns and fringe-data compression by phase-shifting algorithms
Standard optical phase-metrology fringe-patterns are digitized with XxY pixels and 8 bits/pixel (or higher) gray-levels. The digitized 8 bits/pixel are raw-data bits, not Shannon information bits. Here we show that noisy digital fringe-patterns store much lower amount of Shannon information than the capacity of the digitizing camera. This means that high signal-to-noise ratio (S/N) cameras may ...
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This paper describes high-speed phase-shifting method for the real-time analysis of isochromatic and isoclinic parameters in photoelasticity. By rotating an analyzer at a constant rate and an output quarter-wave plate at a double rate of the analyzer and recording images by a CCD camera continuously, sequential phase-shifted images which brightness is integrated by sensors are obtained. Then, t...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2014
ISSN: 1094-4087
DOI: 10.1364/oe.22.018203