Abstract: An electronic device (1) includes an imaging unit (10), and an extraction unit (20) that is configured to extracts rhythm information indicating a pattern of a spatial change in an image captured by the imaging unit (10). The extraction unit (20) includes a first storage unit (22), a calculation unit (24), and a selection unit (26), the first storage unit being storing rhythm information associated with a pattern of a spatial change in a unit region in an image, the calculation unit being calculating a pattern of a spatial change in a unit region in the image captured by the imaging unit (10), the selection unit being selecting the rhythm information corresponding to the pattern of the spatial change in the unit region calculated by the calculation unit (24), from the first storage unit (22).

Abstract: 11 indicates the image that is originally to be displayed; this image is displayed over the entire display area surrounded by the square frame 12. The image control part has the function of reducing and displaying this entire image centered on the center of the image. The reduced image that is reduced and displayed is indicated by 13. The image control part 9 displays the reduced image 13 in the initial stage of use of the head-mounted display; then, as the use frequency or use time of the head-mounted display (the selection of which of these is used is determined by the switch of the operating part) that is input from the input control part increases, the reduction ratio of the reduced image 13 is reduced so that the size of the image is increased, and the image 11 that is originally to be displayed is displayed after a specified use frequency or specified use time is reached.