AUTOMATIC CALIBRATION OF PROJECTION SYSTEM USING NON-VISIBLE LIGHT
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United States of America Patent
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Issued Date -
Sep 8, 2011
app pub date -
Mar 3, 2010
filing date -
Mar 3, 2010
priority date (Note) -
Abandoned
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Abstract
A method and apparatus for calibration of a projection system, comprising projecting visible and non-visible images on at least one image plane, detecting said non-visible images projected on the image plane, and calibrating projection of the visible images using the non-visible images. The visible and non-visible images are simultaneously projected and the non-visible images are continually monitored for automatic calibration of composite displays, without taking the projection system off-line. In addition, calibration can be maintained through continuous automatic adjustment using invisible calibration patterns, even if the system is disturbed while it is operating.
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