SUPERIMPOSED DISPLAY METHOD AND SUPERIMPOSED DISPLAY APPARATUS

There is provided a superimposed display method comprising: displaying (401) a shot image (701) of a spatial structure that has been shot by an image shooting apparatus, and a model image (1201) represented by model information of the spatial structure; accepting separate change instructions for the shot image and the model image before accepting an instruction to display a superimposition image in which the model image has been superimposed onto the shot image in a manner such that a reference position (901) on the shot image and a reference position (1601) on the model image overlap each other; and accepting a common change instruction for the shot image and the model image after accepting the instruction to display the superimposition image. The separate and common change instructions indicate enlargement, reduction, movement, or rotation.