1. A method comprising: receiving probe data from a first period of time, wherein the probe data from a first period of time is from a plurality of probes within a predefined geographic region; generating a first image of the predefined geographic region based on the probe data from the first period of time; receiving probe data from a second period of time different from the first period of time, wherein the probe data from the second period of time is from a plurality of probes within the predefined geographic region; generating a second image of the predefined geographic region based on the probe data from the second period of time; comparing the first image to the second image; and generating a revised route geometry based on changes detected between the first image and the second image.