Patent ID: 8789952

Claim:
An image processing device adapted to generate image data of a projection image, which is displayed on a projection target surface using a projection display device, having a color obtained by correcting a color of original data representing an image to be displayed so that the projection image has a desired color, the image processing device comprising: a storage section adapted to store a spectral reflectivity of the projection target surface; a designation section adapted to designate a type of an outside light in an installation environment of the projection target surface; a correction light determination section adapted to determine a correction light, a reflected light of which on the projection target surface corresponds to a light having a spectral distribution presenting an achromatic color by overlapping a reflected light of the outside light on the projection target surface, using a spectral distribution of the reflected light of the outside light obtained based on the spectral reflectivity and an exclusive measurement of a spectral distribution of the outside light; and a correction section adapted to generate the image data using the original data and data of a spectral distribution of the correction light, wherein the correction light determination section includes a light intensity measuring section provided in the projection display device, and adapted to measure a light intensity of the reflected light of the outside light entering the projection target surface, and a light intensity of the reflected light of the correction light entering the projection target surface, and a light intensity determination section adapted to determine a light intensity of the correction light so that the achromatic color is presented by overlapping the reflected light of the outside light and the reflected light of the correction light each other based on the light intensity of the reflected light of the outside light, and the light intensity of the reflected light of the correction light.