Digital Fringe Reduction Techniques Applied To The Measurement Of Three-Dimensional Transonic Flow Fields

Friedhelm Becker; Yung H. Yu

doi:10.1117/12.7973502

1 June 1985 Digital Fringe Reduction Techniques Applied To The Measurement Of Three-Dimensional Transonic Flow Fields

Friedhelm Becker, Yung H. Yu

Author Affiliations +

Optical Engineering, Vol. 24, Issue 3, 243429 (June 1985). https://doi.org/10.1117/12.7973502

Abstract

A system for digital interferogram evaluation based on an image-processing system connected to a host computer has been implemented. The system supports one- and two-dimensional interferogram evaluations. Interferograms are digitized, enhanced, and segmented. The fringe coordinates are extracted, and the fringes are represented as polygon data structures. Fringe numbering and fringe interpolation modules are implemented. The system supports editing and interactive features as well as graphic visualization. An application of the system to the evaluation of double exposure interferograms from the transonic flow field around a helicopter blade and the reconstruction of the 3-D flow field are aiven.

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Friedhelm Becker and Yung H. Yu "Digital Fringe Reduction Techniques Applied To The Measurement Of Three-Dimensional Transonic Flow Fields," Optical Engineering 24(3), 243429 (1 June 1985). https://doi.org/10.1117/12.7973502

Published: 1 June 1985

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KEYWORDS

Computing systems

Visualization

Image segmentation

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