To provide a display apparatus which can use a general purpose projector, has a simple structure, including a hemispherical rear projection screen, a projector for projecting an image to be displayed on the rear projection screen, and a computer system for creating an image projected from the projector and characterized in that the computer system includes a recording medium for storing image data of a plane image, creation device that corrects the image data stored in the recording medium and creating image data of a curved image, and a transmission device to transmit the image data of the curved image created by the creation device to the projector.