Patent ID: 6597410
Filing Date: 2003-07-22
Classification: G09G,H04N

Abstract:
A projector system for automatically adapting projected images to the shape and position of a display screen relative to a single projector providing an undistorted image, comprising a plurality of modules; including:a) a video camera operatively connected to the projector and which obtains pictures from a screen on which images from a projector are displayed; b) an image processing module which obtains images from a source and stores said images in a random access memory (RAM); c) an adapter module for comparing the screen format with the images which are stored in said RAM and transforms said images to fit the display of images to said screen; and d) a projector displaying module of said projector for projecting said transformed images onto said screen; the fitness of the transformed images relative to the screen requiring satisfaction of selectively at least one of a plurality of the following criteria: (i) each line of an image is accommodated locally with a line on the screen where the image is displayed; (ii) orientation of each unit in an image is oriented locally in accordance with orientation of a part of the screen where said image unit is displayed; (iii) the brightness of each image unit is accommodated locally with the brightness and reflective properties of a corresponding part of the screen where said image unit is displayed; the brightness accommodation signifying that a) the image contour is respectively sharpened or softened when lighting from the environment respectively reduces or increases the perceptual clarity of displayed images at local areas; and b) the brightness of image colors is varied when different sources of lights from the environment produce different local lighting to reduce the variability effect; (iv) the content of each image unit is adapted locally to a geometric form of a local screen area where said image unit is displayed; and (v) the content of each image unit is adapted to one or several points of view from which said screen is viewed.