#759 Feature request: stitch partial scans

[lmari]

It would be very useful to be able to scan originals that are larger than the flatbed scanner area in multiple passages, and have Naps2 stitch the different images together into a larger one.

For example, to scan an A3 sheet with an A4 scanner (A3 = 2 * size of A4) one would capure 3 overlapping images: left, center, right, then select the three images in Naps2, select a merge action and have the software automatically detect the overlap, apply deskew if required and produce a single, merged image.

I don't know if it is possible to reuse here, but the technology exists in open source panorama image generators such as Hugin (front end) and pantools (library) - both projects are on SourceForge.