I recently took a pseudo-scan of an old and rather fragile
map, using a pano-head pointing straight down onto the
map assembled on the floor.
The pano is approximately 4x8.
Given the nature of the subject, I want the pano
to be exactly square, so I need to set horizontal
and vertical control points - of course, being a map, there
are grid lines, ideally suited to placing such points.
But what's best?
Consider a single row of photos 1-2-3-4-5, forming
a simple horizontal panorama.
On what photos should the control pairs be?
The obvious candidate stratgies are:
1-2, 1-3, 1-4, 1-5 (all relative to the left) (and its mirror image)
3-1, 3-2, 3-4, 3-5 (all relative to the centre)
1-2, 2-3, 3-4, 4-5 (a daisy chain)
What's best and why?
On a related note, it appears that the optimizer's
control point errors behave differently
w.r.t straight line controls, reporting large errors,
despite stitching nicely. Any know the details?
BugBear
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