1. A computerized system, comprising: a computer system running image display and analysis software that when executed by the computer system causes the computer system to: display an oblique image, reference positional data for the oblique image, create a ground plane for the oblique image, the ground plane comprising a plurality of facets, the facets having a plurality of elevation data, and conforming to a topography of an area captured within the oblique image, receive a selection of at least two pixels within the oblique image and calculate a desired measurement using the selection of the at least two pixels and the ground plane, the desired measurement taking into account changes within the topography of the area captured within the oblique image.