Systems and methods for estimating the geographic location at which image data was captured

摘要

In some embodiments, a system and method for estimating the geographical location at which image data was captured with a camera identifies matching feature points between the captured images, estimates a pose of the camera during the image capture from the feature points, performs geometric reconstruction of a scene in the images using the estimated pose of the camera to obtain a reconstructed scene, and compares the reconstructed scene to overhead images of known geographical origin to identify potential matches.

主权项

1. A method for estimating a geographical location at which image data was captured with a camera, the method comprising:
identifying matching feature points between images captured by the camera over a period of time, the matching feature points comprising feature point pairs identified in at least two of the images; estimating an estimated pose of the camera during capture of the images from the matching feature points, the estimated pose comprising rotation and translation of the camera during the capture of the images; generating a reconstructed scene by performing geometric reconstruction of a scene in the images using the estimated pose of the camera and a known length of a feature in the scene, wherein the reconstructed scene identifies dimensional geometries of objects in the scene and white spaces between the camera and the objects, wherein the white spaces are horizontal areas substantially free of vertically-oriented objects; and comparing the reconstructed scene to overhead images of known geographical origin to identify potential matches.