According to an embodiment of the present technology, there is provided an information processing device including an input unit, a setting unit, and a generation unit. An image information item of an image to be a projection target is input to the input unit. The setting unit sets a superimposition region at a predetermined position in the image to be the projection target. The generation unit generates, on the basis of the input image-information item, a base image that contains an image of the set superimposition region, and a superimposition image that is superimposed onto the image of the superimposition region in the base image.