Locating Abandoned Oil Wells using Historical Aerial Photos
To facilitate the location of abandoned oil wells, orthomosaic images were created from historical aerial photos acquired in 1972 and 1969. Agisoft Photoscan was used to create camera calibration files and align the 15 images from 1972 and 38 from 1969. The images were georeferenced, identifying features from the historical imagery present in current imagery. The coordinates of these features were used to create markers in Photoscan to reference the images, creating an accurate photomosaic with 2- to 4-meter error.