Patent ID: 7475995

Claim:
A projector, comprising: an image projecting section that projects an image, according to an input image, to a virtual projection plane arranged in a predetermined positional relationship therewith; an imaged-information generating section that includes an output-image taking section to take an output image projected to a real projection plane and output imaged information containing lightness information, the lightness information having a correlation to a lightness of an image taken; and a distortion correcting section that corrects a distortion, in an output image for the input image, caused by an inclination between the virtual projection plane and the real projection plane, according to the imaged information, the distortion correcting section having: a correcting-image supply section that supplies, to the image projecting section, a correcting image for use in compensating for a distortion of the output image, and an image processing section that determines an amount of a peak shift from a peak in lightness on the virtual projection plane to a peak in lightness on the real projection plane, according to the imaged information using the correcting image, and previously distorts the input image in a manner compensating for a distortion in the output image, according to the peak shift amount determined, the correcting-image supply section having a correcting-image modifying section that modifies the correcting-image in a manner approximating, to an angle of the inclination, an amount of an angular change caused by the peak shift, as viewing the peak from the image projecting section.