A data storage unit collects and stores, for each user, data related to a “room-and-image” combination preferred by the user. A generation unit generates information which indicates a “room-and-image” relationship and in which a preference of the user is reflected by using the data collected for each user. In a case where a room image (second image) captured by the user is acquired, an image selection unit selects an image (third image) in which the preference of the user is reflected, from an image group registered in a content DB or an image group registered in a user image DB, based on the acquired second image and the information which indicates the “room-and-image” relationship, and suggests the selected image to the user. Thereby, it is possible to suggest an image which matches with the user's room and in which the preference of the user is reflected, as an image for decorating the user's room.