1. A method comprising: collecting photos associated with one or more objects, wherein the photos are collected from a plurality of users, and wherein one or more of the photos are captured using one or more respective devices that are operable to track a gaze of a user; collecting attention information associated with the one or more objects, wherein the attention information is based on tracking gazes of one or more of the plurality of users; generating an attention map based on the attention information, wherein the generating of the attention map comprises: receiving gaze information; identifying the one or more objects; associating the gaze information with each of the one or more objects; and determining an attention value for each of the one or more objects based on the gaze information; and guiding users to capture photos of particular objects based on the attention map.