Abstract: The present disclosure provides a transparent screen including two main surfaces, and out of light of which a wavelength incident on one main surface out of the two main surfaces is 532 nm, a half width of a peak observed in a distribution indicating strength with respect to a diffraction angle of a primary diffraction light emitted from the other main surface out of the two main surfaces is 2 degrees or greater.

Abstract: A method of calculating correction data for correcting display characteristic includes generating test pattern data, displaying, based on the test pattern data, a test pattern on an image display device, obtaining capture data by capturing the test pattern, and calculating, based on the capture data, correction data for correcting display characteristic of the image display device. In this case, when the capture data does not normally constitute an entire image, correction data relating to an entire image relating to the test pattern data is calculated by setting the not-normally-constituting area as the area to be complemented and complementing the area to be complemented based on the area excluding the area to be complemented.

Abstract: The present invention comprises a local multiprojection system (LMPS) which projects one image on a screen by using a plurality of projectors and a multiprojection system control server (MPSCS) connected with this LMPS through a network, the MPSCS comprises an analysis supporting section which supports analysis of a state of the LMPS and a correction data acquisition method setting section which sets a method of acquiring correction data in the LMPS. In a state that the MPSCS and the LMPS are connected with each other through the network, a state of the LMPS is analyzed by using the analysis supporting section, and a method of acquiring correction data of the LMPS is set based on an analysis result by the correction data acquisition method setting section, thereby executing automatic calibration of the LMPS.