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- W4246017856 abstract "In using particle image velocimetry to obtain quantitative velocity measurements in fluid flows, a double-exposure photograph of the seeded flow is analyzed optically to produce correlation fringes. Ultimately, it is the signal-to-noise ratio (SNR) of these fringe patterns that determines measurement accuracy. It is shown both experimentally and theoretically that the fringe SNR is significantly improved by using two-step processing. The original double-exposure negative transparency is copied onto a negative film to produce a positive transparency of the original recording. It is this positive transparency that is subsequently analyzed to produce fringes with increased SNR." @default.
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- W4246017856 date "1985-04-01" @default.
- W4246017856 modified "2023-09-26" @default.
- W4246017856 title "Particle image velocimetry: improving fringe signal-to-noise ratio with a two-step photographic process" @default.
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- W4246017856 doi "https://doi.org/10.1364/josaa.2.000610" @default.
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