Patent ID: 8542880

Claim:
A process for determining attributes of a roof structure of a real-world three-dimensional building, comprising the acts of: providing at least one computer input field for a user to input first location data generally corresponding to the location of the building; providing visual access to an aerial image of a region including the roof structure of the building corresponding to said first location data, the aerial image taken from a straight down overhead view with respect to the roof structure; on the aerial image of the region, providing a visual marker that is moveable on a computer monitor around said region, said visual marker initially corresponding to said first location data, wherein said visual marker may be moved to a final location on top of the building to more precisely identify the location of the building roof structure, the final location having location coordinates; providing a computer input capable of signaling user-acceptance of the final location of said marker; and, providing visual access to one or more oblique images of an aerial imagery database corresponding to location coordinates of the final location.