Temperature-sensitive paint wind tunnel experiment image registration method

The invention provides a temperature-sensitive paint wind tunnel experiment image registration method, which comprises the following steps of: 1) acquiring a shot image of a temperature-sensitive paint experiment, and determining a reference image f (x, y) and an image g (x, y) needing to be processed; 2) determining the edge of the experimental model by using an edge detection Candy algorithm, carrying out binarization processing, and then carrying out morphological dilation operation to respectively determine mask images m1 (x, y) and m2 (x, y) of the reference image and the image to be processed; 3) clockwise rotating the to-be-processed image g (x, y) and the mask image m2 (x, y) of the to-be-processed image g (x, y) by 180 degrees to obtain new images g '(x, y) and m' 2 (x, y); 4) performing Fourier transform on the image f (x, y), the image g '(x, y), the image m1 (x, y) and the image m' 2 (x, y) to obtain F (u, v), G '(u, v), M1 (u, v) and M' 2 (u, v); and 5) defining a normalized cross-correlation fun