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12 January 1993 Quantitative Schlieren method using digital image processing for supersonic flow characterization
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Abstract
New analytic formulas relating the light intensity distribution from the output plane of the schlieren system to the refractive index gradients of the air flow around a model are reported. The digital processing of the schlieren image using this new algorithm and a proper calibration led to precise measurements of the refractive index (and, hence, mass density) distribution, in the error limits of 5%.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ionel Valentin Vlad, Nicholas Ionescu-Pallas, and Ion G. Apostol "Quantitative Schlieren method using digital image processing for supersonic flow characterization", Proc. SPIE 1771, Applications of Digital Image Processing XV, (12 January 1993); https://doi.org/10.1117/12.139114
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