A system for managing images obtains an image that is captured by an image capture device at an image capture position and an image capture time; and stores the image, the image capture position, and the image capture time. The system further determines a position of a subject included in the image based on the image capture position. The system further stores index information comprising a target identifier of the subject, the position of the subject, and the image capture time in association with the stored image. The system further determines index information corresponding to the search instruction when obtaining a search instruction of the image; and extracts the image corresponding to the determined index information.