PIV camera response to high frequency signal: comparison of CCD and CMOS cameras using particle image simulation

D.G. Abdelsalam (1) , Michel Stanislas (2, 1) , Sébastien Coudert (3, 4)

1 LML - Laboratoire de Mécanique de Lille - FRE 3723
2 Centrale Lille
3 CNRS - Centre National de la Recherche Scientifique
4 PC2A - Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522

Mots clés: We present a quantitative comparison between FlowMaster3 CCD and Phantom V9.1 CMOS cameras' response in the scope of application to particle image velocimetry (PIV). First; the subpixel response is characterized using a specifically designed set-up. The crosstalk between adjacent pixels for the two cameras is then estimated and compared. Then; the camera response is experimentally characterized using particle image simulation. Based on a three-point Gaussian peak fitting; the bias and RMS errors between locations of simulated and real images for the two cameras are accurately calculated using a homemade program. The results show that; although the pixel response is not perfect; the optical crosstalk between adjacent pixels stays relatively low and the accuracy of the position determination of an ideal PIV particle image is much better than expected.

Domaines: Sciences de l'ingénieur [physics]

D.G. Abdelsalam, Michel Stanislas, Sébastien Coudert. PIV camera response to high frequency signal: comparison of CCD and CMOS cameras using particle image simulation. Measurement Science and Technology, 2014, 25, pp.084007. ⟨hal-01074695⟩