Road intersection positioning method based on triangle matching strategy

The invention discloses a road intersection positioning method based on a triangle matching strategy, and belongs to the technical field of image processing. The method comprises the following steps: inputting to-be-matched image data; extracting all intersections of the image data, and counting an intersection point set; performing statistics on triangular topological information description among points in the intersection point set; carrying out statistics on the distribution of two-dimensional distribution of all triangular interior angles of the triangular topological information of the intersection to be subjected to data matching in the basic intersection topological information base; a matching triangle of the to-be-matched data is obtained in combination with the matching limiting condition; and obtaining an intersection positioning result of the to-be-matched data by matching intersection matching results corresponding to the vertexes of the triangles. According to the method, the strong uniqueness