Abstract: A CG image having a transparency parameter is superimposed on a shot image, which is an image picked up by an image-pickup device, to obtain a combined image. The combined image is displayed in a combined-image-display region. In the combined image, a mask region of the CG image is set based on parameter information used to extract a region of a hand. The transparency parameter of the CG image is set based on a ratio of the size of the region of the CG image excluding the mask region to the size of the shot image. By checking the combined image, which is displayed in the combined-image-display region, the user can set the parameter information by a simple operation.

Abstract: A rear projection type display apparatus, comprises an output unit that modulates a light from a light source to output a projection light; an image formation unit that has one or more optical elements, and that subjects the projection light that is output from the output unit to form an image; a Fresnel screen that displays the projection light that is subjected to form an image; a light detection unit that is disposed at a position on which a reflected light from the Fresnel screen focuses, and that detects rays; and a control unit that controls an output of the projection light by the output unit based on the rays that are detected at the light detection unit.

Abstract: In order to perform printing by using a minimum of band buffer and correcting bending/inclination in a sub-scanning direction without making optical adjustments and using special hardware, 1-band image data are stored in the band buffer, images stored in the band buffer are corrected, images lying outside a band area are stored in an intermediate buffer, and images including images stored in the intermediate buffer and corrected images of a next band that lie inside the band area are output.

Abstract: An optical scanning apparatus including a light source, deflection unit configured to deflect a light flux emitted by the light source, a first optical system configured to condense a divergent light flux emitted by the light source, a second optical system configured to focus the deflected light flux on a target scanning face, where the wavelength of the light flux is short, and the first and second optical systems include respective refractive optical elements.

Abstract: Page numbers on original document volumes that have been read are deleted from the read image information as a part of image processing, and page information sorted with the original document pages of multiple read original document volumes as a single document is superimposed onto the image information from which the page numbers have been deleted, following which the pages are printed out. The pages are thus provided with serial page numbers according to the sorting thereof, and situations wherein both original and new page numbers are present on the pages can be avoided.