The purpose of this lab is to show the various methods used to take raw aerial images and make them so they become useful tools in the realm of spatial analysis. Each task in this lab demonstrates how useful aerial imagery and the Georeferencing tool can be. It is important that each image be given a coordinate system and then points added to both as a reference so they are able to match. The higher the resolution of the image the easier it will be to add the reference points.

In the following labs, we explore imagery from St Helena California, images on the Utah State University Campus, and points collected via GPS attached to ground-based control points. Data sources include: gis.joewheaton.org, UTAGRC, State of California, as well as Dr. Joe Wheaton and his university staff who collected the USU data with blimps. It is important to note that distortion has occurred with the georeferenced images because of the various angles they were shot at.

Credits: gis.joewheaton.org, UTAH AGRC, California GIS Data