Adventures with old scanned photos continue

[hannu...@genzu.fi]

Adventures with old scanned photos continue. This time quite interesting case.
Three source photos, images 1 and 2 nearly identical, image 3 portrait mode.
Three pano compilers used:
1. ptgui - result not so good
2. photoshop - result nearly satisfactory
3. autopano giga -  result nearly satisfactory

This time I added vertical cp's in ptgui. And used individual lens and shift parameters all images as Joost suggested. (btw, this is a very good hint, I have used it in other panos quite succesfully.)

The main reason for ptgui's bad result is not finding control points. It found 1 cp between image1 and image3, 4 cps between image2 and image3. Autopano found 0 cps  between image2 and image3, but 44 cps between image1 and image3!

The fact that the buildings in image 3 are out of focus may have something to do this.

Autopano giga is discontinued and out of business. However it has one feature that I find useful. It can find possible panoramas within a folder. I found this pano from a folder that included more than 400 images.

I have always wondered how the control points are calculated. This case did not help it at all ;-)

Here are the images involved if you want to study it more.

https://hanu.fi/images/ptgui-panorama-es.jpg
https://hanu.fi/images/photoshop-panorama-es.jpg
https://hanu.fi/images/autopano-panorama-es.jpg
https://hanu.fi/images/autopano-controlpoints.png
https://hanu.fi/images/01-es.jpg
https://hanu.fi/images/02-es.jpg
https://hanu.fi/images/03-es.jpg

[John Houghton]

Hannu,  Here's my result from PTGui. (Project file attached):

John

[Hannu Lehto]

Very good, how did you get the control points?
/hannu

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[John Houghton]

Hannu,  I used a few manually positioned control points to roughly align the images., but most were then added using the "Generate control points here" feature. (See:  Help-> Help for this window,  for  how to do this).

John