Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
G01C11/04—Interpretation of pictures
G01C11/06—Interpretation of pictures by comparison of two or more pictures of the same area
G01C11/12—Interpretation of pictures by comparison of two or more pictures of the same area the pictures being supported in the same relative position as when they were taken