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