An unknown source image accurate positioning method, device, equipment and medium

Abstract

The application discloses an unknown source image accurate positioning method, device, equipment and medium, and the method comprises the following steps: acquiring coarse geographic location information of an unknown source image and generating an effective geographic range; acquiring a semantic feature vector from the unknown source image; acquiring a plurality of candidate images within the range according to the effective geographic range, and constructing a local candidate image library B; screening the first N images with similar degrees from the local candidate image library according to the vector similarity, and constructing a coarse screening candidate set B1; performing cosine similarity matching calculation on the semantic feature vector of the unknown source image and the standard semantic feature vector of each image in the coarse screening candidate set B1, and screening the first P optimal matching images with similar degrees; combining the standard geographic coordinates of the optimal matching images, correcting the coordinate deviation caused by the shooting angle and image distortion of the unknown source image, and fitting and solving the initial accurate geographic coordinates of the unknown source image. The application has the advantages of improving the positioning accuracy of the image and reducing the positioning complexity.