My Autopano Pro forum

Thanks hankkarl

giving it a try, right now

C' est parfait, merci bien!

Last edited by Mitgel (2007-09-03 01:17:47)

chouette,  I  knew them before I posted.

eh bien, it says "manually stitched" on one of the sites; really??
It's clear to me that they are tricky, especilally with roofs and streets.

How much of overlapping did you used for these? 50 %

bonne nuit

Mitgel wrote:

How much of overlapping did you used for these? 50 %

What counts is the "linear distance" between shots: the lower the distance the more easy the seams placement (less parallax changes.) The distance I used for la préfecture de Grenoble was much too large. Chimneys and tiled roofs are not recommendable!

Other important points are the camera orientation (should be constant - I tested using a compass - found it don't work) and the distance between the camera and the buildings (I used the sidewalk as a reference - it was OK.)

Intersting test: which among the blenders is the best for that? (manual blending of a large amount of views is very tedious!)

APP didn't exist yet (I'm not sure about Enblend) and this is something where I had to learn how to use layers, masks and some other related PS nice tools.

The best advice: plan several attempts, not a single one.

I would recommend using small JPEG or "RAW+small JPEG" to find out where the most difficult problems are (if the red wall is the only subject and is flat, then this pano should be easy, provided camera placement and orientation are precise enough.)

/ A proof of the concept: http://www.seamlesscity.com/purchase.html
and http://www.dojoe.net/tutorials/linear-pano/

Last edited by GURL (2007-09-05 12:39:58)

How do you set the focal length to 1000 ? I could not find the option to override the Exif data.
Bernard

Thanks Bo, but I cannot find the way to change the focal length.
Could you give a more detailed procedure ?
Bernard

Nanard, see the images below. I can't think of a more detailed description Hope that helps!

Bo,
I must be missing something obvious, but I don't have that icon 'Properties' highlighted in red !
The 3 icons I have there are (translation from my french version) :
detection parameters
add
remove

Bernard

Bo, yes I am using APP 130. Is it so old ??
Usually I am not using alphas or betas or RCs, but now I think I have to..
Thanks a lot for your help !
Bernard

Here is a similar one : 70 x 6Mp images sides by side to produce a 0.37 gigapixels graffitti wall. The best is to look at it at

http://www.gigapan.org/viewGigapan.php?id=891

My big issue is (Alexandre, are you around :-) the weave , even if I used a tripod and quite a regular spacing between the shoots. I tried various optimisations without any luck and had lots of cropping issues, especially on the right side of the panorama.

Last edited by pvk (2007-10-03 23:10:42)

Great work pvk!
I'm trying to make such linear panorama, but I have some difficulties: I shoot with a fisheye, but it was impossible to stitch. So I "defish" (or "unfifsh"???) each picture, create an alpha channel to mask the black areas. Then, I open the pictures in APP and then ... the result was not better
Finally, I shoot with a rectilinear lens (a 18mm), the result is "correct" and need a lot of work in Photoshop.

Could it be possible, in the future, to make the creation of a linear panorama much easier? And could it be possible to "defish" the pictures directly in APP?

I found an article about such software:
http://research.microsoft.com/~cohen/LongThings.pdf

The same text in french (with less speling mistakes ):
------
Joli travail pvk!
Je suis en train d'essayer de réaliser un panorama linéaire, mais j'ai pas mal de problèmes: j'ai pris les photo avec un fisheye, mais l'assemblage ne donnait rien. Pour chaque photo, j'ai alors corrigé la distorsion et ajouté une couche alpha pour masquer les zones noires de chaque côté. J'ai lancé APP, et le résultat de l'assemblage n'était pas meilleurs.
J'ai fini par prendre les photos avec un 18 mm, le résultat était "correct" et avait besoin d'un gros travail sous photoshop.
Serait-il possible, dans le future, de simplifier la création de ce type de panorama et de corriger la distorsion directement dans APP?

J'ai trouvé un article qui parle du principe de fonctionnement d'un tel logiciel:
http://research.microsoft.com/~cohen/LongThings.pdf

Edge@51 wrote:

Could it be possible, in the future, to make the creation of a linear panorama much easier? And could it be possible to "defish" the pictures directly in APP?

I found an article about such software:
http://research.microsoft.com/~cohen/LongThings.pdf

I seem to recall other posts on this issue.

I believe it requires a form of projection - orthographic? - not currently supported by APP or many other stitchers.

http://www.connorphotography.net/orthographic.html

http://en.wikipedia.org/wiki/Orthographic_projection

http://www.autopano.net/wiki/Understand … ting_Modes
"Other stitching models are possible and will soon be supported by Autopano Pro. The most popular is the Orthogonal, also called Orthographic stitching. All the source images are shot orthogonally to the same plane. Instead of rotating around its center, the camera is following a linear motion path, always pointing in the same direction. This is exactly what is being done when scanning a A3 size sheet of paper with a letter size scanner. We end up with 4 or 5 files assembled using this stitching model. It is also what happens when taking pictures of building fronts in a street by walking down the street and taking a picture facing the buildings every 10 steps."

Last edited by mediavets (2008-03-23 21:15:00)