Faults with PTIGui vs Photoshop Photomerge

[Steve Galvin]

I often have to stitch just 2 aerial images together and even though they have a huge amount of overlap PTIGui cannot seem to get the stitching correct. However when I use Photoshop's Photomerge I get a perfect result. I have tried altering the control points etc but it does not seem to make any real difference, sometimes it just makes matters worse. I would have thought that PTIGui would have easily coped with such a 'simple' task given that Photomerge is a less sophisticated program.

Am I doing something wrong or is PTIGui to complex for such a small task?

I have to admit that PTIGui copes fine with many images that Photomerge gives up on.

Any thoughts would be welcomed

Many thanks Steve

[Erik Krause]

Am Donnerstag, 3. April 2014 12:14:29 UTC+2 schrieb Steve Galvin:

Am I doing something wrong or is PTIGui to complex for such a small task?

An answer has been given in https://groups.google.com/d/msg/ptgui/gh0YBm04Pnk/hbYKDNZiRboJ

Erik

[Henrik]

Great that Photoshop could do the job.

As a panographer you would have several tools to get the job done - sometimes, actual most of the time PTGui does an excellent job, mainly because it's the first program I use, if it fail for some reason, I may chance my workflow if it has multiple exposures I might do the HDR part outside of PTGUI and then take it back in.

Other times I might let photoshop try to do the job and if it does a good job at it, great

Now I guess you would like PTGui to do everything or you could wish that Photoshop would do everything but fact is that neither will 100% of what we do and want.

Sometimes we expect too much other times the program's currently can't do it and we ask for this feature - our wish may be granted and it improves our program of choice other times we just have to accept that one screwdriver just isn't enough 

Just like one camera or lens isn't going to capture it all

Best if luck, I am glad that PS could get the job for you

Henrik

Sent from my iPhone

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[PTGui Support]

Hi Steve,

The problem with aerial images is parallax, see 5.5:
http://www.ptgui.com/support.html#5_5

You might be able to get a better result in PTGui by enabling Viewpoint
correction for all images. You can do this in the Optimizer tab (switch
to Advanced mode first).

Kind regards,

New House Internet Services BV
Joost Nieuwenhuijse

-----------------------------------------------
PTGui - Photo Stitching Software

www.ptgui.com
For support see: http://www.ptgui.com/faq/
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[Erik Krause]

Am 04.04.2014 09:02, schrieb PTGui Support:
> The problem with aerial images is parallax, see 5.5:
> http://www.ptgui.com/support.html#5_5
>
> You might be able to get a better result in PTGui by enabling Viewpoint
> correction for all images. You can do this in the Optimizer tab (switch
> to Advanced mode first).

... but be aware. Viewpoint correction can cause buildings to lean over.
More info in the other thread I already linked to:
https://groups.google.com/d/msg/ptgui/gh0YBm04Pnk/MbgNbzyqdJIJ

--
Erik Krause
http://www.erik-krause.de

[Richard Gillespie]

Couldn't one take overlapping shots from a video to make a panorama to
avoid the parallax problem?

>email to ptgui+un...@googlegroups.com.

[PTGui Support]

The only way to avoid parallax is by making sure the photos are taken
from exactly the same viewpoint.

And the only way to get a perfect stitch is by avoiding all parallax..

Joost