1. A method for operating a computing device, the method being performed by one or more processors and comprising: processing one or more images of a scene captured by an image capturing device of the computing device, the scene including an object of interest that is in motion and having a characteristic rounded shape, wherein processing the one or more images includes detecting a rounded object that corresponds to the object of interest; determining position information based on a relative position of the rounded object in the one or more images; and implementing one or more processes that utilize the position information determined from the relative position of the rounded object.