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ISSN: 1065-3090 Print
ISSN: 1940-4336 Online
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DOI: 10.1615/JFlowVisImageProc.v15.i3
Pages: 95
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DOI: 10.1615/JFlowVisImageProc.v15.i3.10
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Article price - $35.00 |
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PIXEL QUANTIZATION INFLUENCE ON REAL-TIME CROSS-CORRELATION COMPUTATION FOR AN EMBEDDED PIV CONTROL SYSTEM
Nabila Filali
UMMFT&LHC
Taoufik Filali
Unité de Métrologie en Mécanique des fluides et Thermique, Monastir University, Tunisia; Hubert CURIEN Laboratory, Saint-Etienne University, France
Habib Ben Aissia
Unit de Metrologie en Mecanique des Fluides et Thermique, UMFT 03/UR/11-09, Ecole Nationale d'Ingnieurs de Monastir, Rue Ibn El Jazzar, 5019, Monastir, Tunisie
Jacques Jay
Laboratoire Traitement du Signal et Instrumentation, UMR CNRS 5516, 23 rue du Docteur Paul Michelon, 42023 Saint Etienne, France
ABSTRACT
The main purpose of this paper is to evaluate the measurement efficiency of the PIV (Particle Image Velocimetry) technique in real time. Thus, we propose a new approach using pixel quantization format reduction to process image cross-correlation as well as flow displacement vector validation in real time. To achieve this, two delayed images are acquired and parallely transferred to a hardware system based on FPGA and to a computer. A cross-correlation processing algorithm between the images leads to computing of the displacement vector field. The PIV data validation criteria will be detailed and some of them are selected for implementation. With this contribution hardware needs are slightly dwindled by maintaining the same performance.
pages 181-200
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