Methods and systems are disclosed for identifying waypoints. In one aspect, a method performed by an application executing on a computer system, includes receiving at least two sets of digital images including a first set of digital images for which image acquisition times are known and a second set of digital images for which image acquisition times and image acquisition locations are known. The method further includes overlaying waypoint identifiers over a map image. The waypoint identifiers correspond to geographical coordinates and to time acquisitions of one or more of the second set of images. Furthermore, the method includes receiving from a user associated with the application a waypoint selection of the overlaid waypoint identifiers and one or more image selections of the first set of images. In response to receiving the selections, the method includes associating the selected ones of the first set of images with the selected waypoint, and generating a trip-descriptor including the first set of images associated with the overlaid waypoint identifiers.