Automatic keystone correction for projectors with arbitrary orientation
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United States of America Patent
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-
Feb 18, 2003
Grant Date -
Feb 21, 2002
app pub date -
Aug 15, 2001
filing date -
Aug 17, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method corrects keystoning in a projector arbitrarily oriented with respect to a display surface. An elevation angle, a roll angle, and an azimuth angle of an optical axis of the projector are measured with respect to the display surface. A planar projective transformation matrix is determined from the elevation, roll, and azimuth angles. A source image to be projected by the projector is warped according to the planar projective transformation, and then projected onto the display surface.
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