Patent Document ID: 20010019358
Application ID: 09797103
Patent Status: 0

Claim One:
1. An image calibration device, which calibrates images by using a plurality of image projection devices (projectors) to project a plurality of images at different positions on a screen, and using an image pick-up device to take pictures of the images thereby formed on said screen, comprising: a shielding member which shields external light, and which is provided so as to extend from said screen toward said image pick-up device and to be located outside the area enclosed by lines connecting all or part of said screen and said image pick-up device; said image pick-up device, which takes pictures of images on said screen projected by at least one of said plurality of image projection devices; and, a calibration device which calibrates the projection conditions of said image projection devices, based on the picture data obtained from the results of the picture-taking.