1. A method for guiding a number of mobile devices, the method comprising: receiving an image of a portion of an environment around a mobile device in the number of mobile devices from a sensor system associated with the mobile device; identifying a group of pixels from an array of pixels in the image for processing; determining whether a pixel in the group of pixels meets a standard, wherein the standard comprises a number of criteria for a pixel value of the pixel; incrementing a pixel counter in response to the pixel meeting the standard; incrementing a coordinate counter by a coordinate value for the pixel in response to the pixel meeting the standard; and performing the steps of determining whether the pixel in the group of pixels meets the standard, incrementing the pixel counter, and incrementing the coordinate counter for each pixel in the group of pixels; identifying a centroid for a set of pixels that meets the standard; and generating a number of commands for guiding the mobile device within the environment based on the centroid.