Patent ID: 7422331

Claim:
An image processing system, comprising: an image distortion sensing section which senses an area including at least a part of a projection image projected onto a projection target area to generate image distortion sensing information; an environmental influence sensing section which senses a specific area of the projection image to generate environmental influence sensing information indicating a brightness index value in the specific area; an image distortion correction section which corrects distortion of the projection image; an environmental influence reduction section which performs processing of reducing environmental influence caused by a difference between an ideal environment and an actual environment; and a projection section which projects a single-color red image, a single-color green image, a single-color blue image, and a solid black image as the projection image at different times; the environmental influence sensing section sensing an area of the projection image always included in an image after image distortion correction as the specific area to generate the environmental influence sensing information of each of the single-color red image, the single-color green image, the single-color blue image, and the solid black image; and the environmental influence reduction section performing the processing of reducing the environmental influence based on the environmental influence sensing information.