In the manner which projects Y direction or the image which it adjoins to X and Y direction making use of the projector of the projector device and the program

摘要

PPROBLEM TO BE SOLVED: To quickly perform image processing at high speed and to cope with a screen having an arbitrary shape in a multi-image projection method of projecting images with inconspicuous joints. PSOLUTION: Mapping using a projecting frustum of one of projectors having adjacent projection ranges is preliminarily performed, and a screen shape is drawn by a viewing frustum of the projector, and obtained overlapping images are subjected to gradation, and a resultant image is stored as image data for luminance adjustment for the projector. The same processing is performed for other projectors, and resultant images are stored as image data for luminance adjustment for respective projectors. Each time storage of a one-frame portion of image data is terminated in taking input images into a frame buffer in each projector, a blending function of a graphics accelerator is set to "multiplication", and inputted image data are multiplied by image data for luminance adjustment by each pixel, and the frame buffer is updated with values resulting from multiplication. PCOPYRIGHT: (C)2004,JPO