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I've taken about an hundered of pictures of a large painting with an iPhone at a distance of about 40cm. For each picture I moved the camera along the painting.

I was thinking to use to build the final assembly. Unfortunately all the possible projections seems to apply only on a sphere not on a rectangle.

How can I automate the assembly of the painting I captured?

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2 Answers 2

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If you are on Windows platform, try Microsoft Image Composite Editor.
It has mode for this kind of stitching and it works quite well.

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What you are looking for is Rectilinear projection. It practice, it is usually hard to get right, since it tends to amplify mis-alignments of individual images.

See for example this tutorial or this one for an example of stitching flat images together.

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  • \$\begingroup\$ Not sure about your answer Rectilinear is a type of projection for mapping a portion of the surface of a sphere to a flat image. I would like to map a portion of a flat image into a flat image. \$\endgroup\$
    – nowox
    Aug 25, 2015 at 18:55
  • \$\begingroup\$ The description assumes that you took all your pictures from the same point. I guess you moved your phone to remain parallel to the picture. I'll add more info in my answer. \$\endgroup\$ Aug 25, 2015 at 19:46
  • \$\begingroup\$ In my Hugin version (latest), I don't have the same interface as your first tutorial. There is less tabs. \$\endgroup\$
    – nowox
    Aug 25, 2015 at 20:15
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    \$\begingroup\$ @nowox, select Interface -> Expert or Interface -> Advanced, and you should see the Control Points, Masks, Optimizer, and Stitcher tabs. \$\endgroup\$
    – inkista
    Aug 25, 2015 at 20:54

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