1. One or more non-transitory computer readable media comprising computer instructions configured to cause one or more computer processors to perform actions comprising: accessing an electronic image of an area that includes a region of interest; processing the electronic image to emphasize pixels associated with at least one structure useful for identifying the region of interest; identifying a population of pixels in the electronic image associated with the at least one structure; selecting one or more image coordinates based on the population of pixels; and converting the image coordinates to world coordinates corresponding to at least a portion of the region of interest.