Application of image 3D reconstruction to pressure measurement on blade surface

PSP image reconstruction refers to a process transforming pressure distribution on PSP 2D image after processing to 3D model, which gives help to analyze the experiment results and extract the pressure information quantitatively. In this paper, a cascade PSP pressure distribution image is used for the research of the image reconstruction. Finally, the pressure distribution on 3D model surface is gotten, and the error analysis of the image reconstruction is also given. The results show that: 1) it is easier and more convenient to gain and analyze the pressure information on PSP image. 2) The quantity and location distribution of the markers have an effect on the precision of PSP image reconstruction.