Stitching in Mosaic Mode

[Kai M]

Hello together,

I need some help with Hugin. I move a camera very precisely over a painting and take several pictures. I would like to stitch these pictures together with Hugin. Unfortunately, I don't get any usable results with Hugin. I have already tried several settings, like cpfind multirow, just translation optimization, etc.

Anybody got any advice for me?

[Luís Henrique Camargo Quiroz]

   Hello Kai,

   Have you seen this tutorial already, "Stitching flat scanned images"?

   Your pictures are of a flat image (the painting). I think the settings you will find in Hugin are for regular panoramas only, where the camera should only rotate or have limited, small  translations.

   Good luck,

   Luís Henrique

  

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Luis Henrique Camargo Quiroz
http://luishcq.br.tripod.com - http://www.christusrex.org/www2/cantgreg
http://panoramaslh.net/

[Bruno Postle]

Mosaic mode optimisation can be unstable, so you need to make sure there is a good spread of control points. Also it helps to optimise in stages, starting with a few parameters, and adding more at each step, the last step is to optimise all the necessary parameters at the same time.

Assuming your photos are directly facing the painting at a similar distance; you should start by optimising X and Y for all photos, except an anchor, to get approximate positions correct.

Then you can add r (roll) and Z parameters to get a better fit.

Then there are parameters that should be optimised for all photos, including the anchor, these are p (pitch), y (yaw) and b (barrel distortion).

Hopefully you should now have a stable mosaic. Add more control points to get a better fit if necessary. You can also add horizontal/vertical control points to straighten the output, but remember to add r (roll) optimisation to the anchor photo if you do.

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Bruno