Patent attributes
Global positioning system (GPS) receivers, along with a user device with a camera, can be used to determine an elevation of a point of interest on or within a structure. The user device and a first GPS receiver can be located somewhere outside the structure from which the structure is clearly visible. A second GPS receiver can be located on, within, or near the structure. The user device receives location data from both GPS receivers and calculates a distance between the two. The user device then takes a digital photograph in which structure is visible and notes the photo capture angle. The user device then calculates the elevation of the point of interest trigonometrically using the calculated GPS distance and the photo angle. The user device can then automatically insert this information into associated documentation and transmit the same.