1. An information processing system, comprising: a processor configured to: detect and track an object in moving image data, and detect a plurality of object elements from the object, each of the object elements representing an element of the object set in advance and detectable from the object; extract a feature quantity of each of the object elements from a frame image constituting the moving image data; select the frame image satisfying a frame selection criterion for each of the object elements, the frame selection criterion being set in advance for each of the object elements; and associate frame specifying information for specifying the selected frame image with the feature quantity of the object element extracted from the selected frame image.