[ptx] Multirow Projection / HowTo

[Bruno Postle]

On Wed 14-Jan-2004 at 08:40:09AM +0100, Fabian Betto wrote:
> 
> I'am trying Multirow Pictures to make a sperical Projection.
> 
> But i have some problems with the optimization procedures.
> Do you have any reference how the steps come in order when i have
> 3 lines with 12 Pictures like that:

There are no tutorials for this yet, but these are some thoughts:

1. With lots of images, the optimiser can get confused.  You need to
   give it an approximate idea of the positions of each photo first.
   Try stitching just part of a row (8 photos) and see how that
   works.

   The optimiser also gets confused with lots of parameters to
   optimise, try just optimising one thing at a time - Optimise the
   yaw for all the images, then the pitch, and then finally yaw,
   pitch and roll.

2. A full 360 panorama is a special case, this involves joining a
   series of pictures into a circular band around a sphere - This is
   only going to work when the field-of-view of the source photos is
   calculated accurately.

   You can calculate the field of view by trying to stitch a single
   row and optimising only yaw and fov (field-of-view).

-- 
Bruno