Patent ID: 7292252

Claim:
A projection type image display system comprising: a sensing section which senses a projection target area and outputs sensing information; a detection section which performs edge detection based on the sensing information and outputting detection information which indicates edge in a sensed image; a projectable area determination section which determines a projectable area having no obstacle in the projection target area, based on the detection information; a projection area selection section which selects a projection area from the projectable area, based on selection by a user or a predetermined criterion; an adjustment section which adjusts input image information such that an image is displayed on the projection area; an image correction data generation section which generates image correction data used to correct the image depending on viewing environment, based on the sensing information; a correction section which corrects color and brightness of the input image information, based on the image correction data; and an image projection section which projects an image onto the projection area based on the input image information corrected by the correction section.