Patent ID: 7415167

Claim:
An image display apparatus for displaying a continuous image on a screen by joining a plurality of images projected onto a screen, comprising: a frame memory for storing image data as image signals input to the image display apparatus; an image signal correcting section for correcting the image signals stored in the frame memory to image signals to be input to each image display section; an image picking-up section for picking up a plurality of images as image data to be displayed on the screen; a correction data calculating section for calculating correction data for use by the image signal correcting section from the image data picked up by the image picking-up section; and a correction data storing section for storing the correction data calculated by the correction data calculating section, wherein the image signal correcting section corrects the image signals such that a plurality of images projected onto the screen at different regions are combined into a single continuous image on the screen, on the basis of the correction data calculated by the correction data calculating section and stored in the correction data storing section.