An image generating device has a camerawork information extracting unit that extracts imaging information of a captured image, a composition information calculating unit that decides a cut-out frame for cutting out a new image from the imaging information and the captured image based on a constraint condition, and a composition information shaping unit that outputs, as attribute information of the captured image, the imaging information and the cut-out frame. This configuration makes it possible to obtain from a captured image a newly generated image which is a favorable image that is easy to see for a viewer, without requiring skilled imaging techniques during capturing, and to efficiently record and manage the captured image and the newly generated image.