PROJECTION DISPLAY WITH SCREEN COMPENSATION

摘要

A control system for a projection display includes means for compensating for spatial variations or artifacts in light scattered by a projection screen. According to embodiments, a sensor produces a signal corresponding to the amount of light scattered to a viewer on a region-by-region or pixel-by-pixel basis. A screen map is created from the sensor signal. Input display data is convolved with the screen map to produce a compensated display signal. The compensated display signal drives a projection display engine. The projected light driven by the compensated display signal convolves with the display screen to produce a viewable image having reduced artifacts. According to one embodiment, a relatively fixed screen map is produced during a calibration routine. According to another embodiment the screen map is updated dynamically during a display session.