    
John Strait
Moderator
Username: Jstrait
Post Number: 114
Registered: 5-2001
| | Posted on Friday, August 27, 2004 - 11:42 am: |   |
The Panorama Factory compensates for small amounts of camera roll angles by adjusting the the cropping rectangle. This is illustrated in the section Roll angle of the web page Setting up your camera.
To adjust the cropping rectangle, The Panorama Factory simply slants the rectangle by the same amount as the "stair stepping" effect introduced by the camera roll angle. Unfortunately, there is no simple way to find out this angle using The Panorama Factory because the actual roll angle is not computed in this process.
If the roll angle is consistent for all images in your panorama, you can compute the roll angle yourself using this procedure:
1. Note the width and height (in pixels) of your original images.
2. Stitch your panorama and note the width and height (in pixels) of the stitched image.
3. The roll angle of the camera is:
angle = arctan( (hs-hi) / (ws-wi) )
where
hs = height of the stitched image
hi = height of a single original imported image
ws = width of the stitched image
wi = width of a single original imported image I hope this helps!
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