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General: |
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Our concept for automatic calibration is a
flexible, fast, and accurate system for
calibrating multi-projector systems. It also has
an integrated reference system, which does not
require extra hardware, installation, or
additional calibration. |
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Concept: |
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It does not require any special preparations to
be taken prior to or during an automatic
geometry adjustment sequence. It is inherently
self-calibrating, since sensors are physically
mounted on the screen, they are always in place,
and will stay out of the way compared to
camera-based systems that need to be at or near
the eye point.
Unlike camera based geometry
adjustment which is based on
complicated, slow and often
inaccurate picture recognition
algorithms, it actually
measures all properties of the
projection theatre very accurately.
Such measurements are made
possible by installing a number of
simple and invisible, but innovative,
warping sensors in the screen itself. The
information gathered by these sensors during the
automatic adjustment sequence is used by the
warping software to correct each channel in the
multi image projection theatre to become perfect
and seamless.
It is also
possible to retrofit existing screens
with warping sensors
and thus obtain automatic
adjustments.
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Installation: |
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Warping Sensors are small and very sensitive
light sensors which are permanently installed in
the screen and painted and they are not
at all visible on the screen surface. However,
the Warping Sensors have been fitted with green
and red LED’s which are used for verification of
the system performance. Furthermore, if the
screen is used in a nonautomatic mode, these
LED’s can be used as a normal reference grid. |
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