Robert D Feinman
Straightening Swing Lens Panorama
Here is the original of
the interior of the New York State Theater take with a Noblex
swing lens camera.
It has been reduced for the web. The original size was 600
pixels high by 1646 wide.
Notice that the parallel lines create a barrel
Using the Panoramic Tools
Adust/Extract filter with the following parameters we can adjust
the image to appear rectilinear.
The Noblex has an angle of view of 127 degrees. The width and
height are set to 1.8 times the original size.
This will create a new file whose vertical height after cropping
is the same as the original.
Here is the result of the
Since the source and destination images are different sizes a
new file is created.
After cropping out the
curved black areas at the top and bottom we get the final
Notice that it is almost twice as wide as the original and that
there is stretching of objects near the sides of the frame.
Almost all of the bowing of the original has been removed.
By adding values for Yaw, Pitch and Roll the slight off
centering of the image could be adjusted as
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© 2001 Robert D Feinman