Calibration technique of PIV for distorted image using LCD

In implementing the PIV (Particle Image Velocimetry), the measurement accuracy is often badly influenced by the distortion caused by the refraction depending on the shape of the water tank. In this paper, we introduce a calibration method using LCD. A waterproof LCD is placed in the water and it images a dot pattern to construct a calibration table, which can be used to eliminate distortion. The technique is applied for PIV and the results of the experiment are intruded in this paper.