Caleb,
Your multi-camera setup does not look too rigid. Small changes in the
positioning of a camera would cause havoc on the final result.
With a multi-camera rig there will always be some parallax error. When shooting
video with the rig moving around the sometimes the subject will be close
sometimes at infinity. If the camera is always held in the same way the ground
will most likely be closer than the rest of the pano.
The best batch script to stitch one scene might be quite different from another
if the main distance to subject changes or if the rig is held differently. If is
also possible to create a general batch script that can be used for most scenarios.
To minimize change in the pano video I would try to keep the orientation and
distance from the ground of the rig constant.
My process to create a batch stitching script is to run a control point finding
utility on many groups of images. Maybe 50 groups spread across the entire
video. So in your example every 40th set of images. Combine all the control
points from all the sets into one project. then optimize this. This gives a good
average of what the entire video needs to stitch.
The horizon is stitched with a subject distance that is maybe 10 meters away.
The ground at 1 or 2 meters away. They sky at the subject distance of 5 meters
away. But it really depends of what you are shooting.
Your basket ball hoop is too close to ever give a good stitch along with the
background. If possible in situations like this ensure a single camera can
capture close up images like this. Do not put them on a seam.
For blending the seams together I would not use a "smart" blender. They will
choose the best path for the seam for each frame and it will cause a wiggle in
the final video, especially if the camera is stationary. Use a simple feather
instead. or very narrow blending using masks to force the actual seam location.
If the camera is moving then this is less of an issue.
Jim Watters
On 2012-07-20 3:08 AM, Caleb wrote:
I have 6 1280x960 images taken from 6 corresponding videos. They're all from
within an extremely short time span of each other. The cameras they were all
configured for a 170 hfov. The cameras were attached to the inside of a 19cm
cube and it was suspended by one corner. However, they're all tilted so
horizontal is almost diagonal. See the attached image for a better understanding.
The zip file can be found at http://res0l.net/images/PanoTest.zip
Also included in the zip file is one blended-fused output which represents the
best exposure adjustments I was able to coax out of hugin.
I'm wondering if someone can do a better job of stitching and exposure
adjusting than I was able to get. If so, I'd love to see your .pto/hear your
process. I'm about to setup automation of thousands of such image sets and
would love to have them looking the best possible. For my intended purpose,
close up parallax issues won't exist except in the very rare case.
Cheers
Caleb
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Jim Watters
http://photocreations.ca
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