Patent ID: 7872217
Filing Date: 2011-01-18
Classification: H04N

Abstract:
1. A method of projecting an image for an image projecting apparatus that includes a lighting optical system that emits a light beam, an image processing device that processes image information of a source image, a spatial light modulator that modulates the light beam based on the image information of the source image, and a projection optical system that projects the light beam modulated by the spatial light modulator on a screen as a projection image, the method comprising: compensation operating including the image processing device performing a first compensation of highlighting a high frequency range of a spatial frequency component of the image information of the source image and a second compensation of increasing, when it is determined that average brightness of image information of the projection image is under average brightness of the image information of the source image having a single spatial frequency on which the first compensation is performed, an area having brightness above the average brightness of the image information of the source image in the image information of the projection image, and when it is determined that the average brightness of the image information of the projection image is above the average brightness of the image information of the source image, an area having brightness under the average brightness of the image information of the source image in the image information of the projection image.