Image geographic positioning method and system based on street view image super-radius cube projection three-dimensional reconstruction

The invention relates to the technical field of image geographic positioning, in particular to an image geographic positioning method and system based on street view image super-radius cube projection three-dimensional reconstruction, and the method comprises the steps: correcting a distorted street view image through super-radius cube projection, and obtaining a serialized perspective image; establishing a reference image database by using the serialized perspective image; performing three-dimensional reconstruction on the image matching points in the reference image database to generate three-dimensional point clouds, and grouping the three-dimensional point clouds according to the streetscape images to establish a feature point cloud database; calculating matching scores of the query image and three-dimensional point clouds in the feature point cloud database based on the point density information of the image matching points, and selecting a group of point clouds with the highest matching score as candida