Research and Realization on 3D Propeller Cavitaion Reconstruction

The problem of propeller cavitation can lead to a decrease in performance or even breakage of propeller blades, and the study of propeller cavitation has significant practical significance. The use of computer vision technology for propeller cavitation experiments has always been a hot topic in the field of shipping research. However, there are many difficulties in studying the behavior of propellers in cavitation water tube experimental equipment or pressure reducing water tank environments. In response to this problem, this paper proposes a non-contact binocular stereo vision technology to reconstruct propeller cavitation. Firstly, preprocess the images collected from the experiment and separate the bubbles from blades. Then, the focus is on correcting the preprocessed image. On the basis of obtaining camera parameters based on camera calibration, polar correction is performed to obtain three-dimensional information of the bubbles and ultimately reconstruct the three-dimensional image of the bubbles. The experimental results indicate that this method can achieve good experimental results.