PROBLEM TO BE SOLVED : To provide an information processing device, an information processing method, and a program that can suitably provide three-dimensional property information.SOLUTION : The information processing device includes a floor plan identification unit for generating floor plan information based on a floor plan image, and a model generation unit for generating a three-dimensional model using the floor plan information. The floor plan identification unit includes a line segment detection unit for detecting line segments corresponding to the walls on the floor plan, a segmentation processing unit for specifying a room area corresponding to a room on the floor plan, a character recognition unit for recognizing a character string included in the floor plan image, an installed-object detection unit for detecting an installed object symbol included in the floor plan image, and an integration unit for specifying the type of the room in the room area, and complementing the room structure. The model generation unit includes an estimation unit for estimating a scale of the floor plan, and a generation unit for generating a three-dimensional model of a real-estate property based on the floor plan specified by the floor plan information, the scale, and an estimated ceiling height.SELECTED DRAWING : Figure 1COPYRIGHT : (C)2018, JPO&INPIT