wwp@yahoogroups.com:
Re: HELP please
Bernhard Vogl 2006-Oct-13 15:38:00
Hello Normal,
Looking at your pano (as far as this is possible to do from a ready stitched panorama) i'd suspect wrong lens parameters. The FOV seems to be too high resulting in such a "wavy" horizon.
You should consider creating a lens template from an easier to stitch panorama:
- Choose a location where you have enough verticals (e.g. a place that is surrounded by near houses).
- Carefully define your control points
- do automatic alignment ( http://www.dffe.at/pano360/pano-horizont-360_en.html ):
...
* Do a rough alignment
* Define verticals in every source image
* Do a full optimization for all lens parameters (first FOV, then FOV,a,b,c) as well as for Yaw, pitch and roll of all images.
Assuming that you have set the control points correctly, this will not only automatically align your template panorama but also find the correct lens parameters.
* If automatic alignment fails, re-check your control points
Best regards
Bernhard
-------- Original-Nachricht --------
Datum: Thu, 12 Oct 2006 23:30:51 -0000
Von: "Norman Peters" <#removed#>
An: #removed#
Betreff: HELP please
> Help - Why am I still having troubles with my panos?
>
> Shooting on a Canon 10D body, with a Canon 15mm fullframe fisheye.
>
> I usually shoot 2 rows around of 10 shots at plus & minus 30 degrees,
> plus a zenith and nadir shot. I have a panohead that is based on the
> Manfrotto spherical VR head.
>
> Problem - some horizontal (or near-horizontal) straight lines in the
> pano - such as roadways - do not stitch with smooth transitions
> between frames in the pano, particularly when the line is relatively
> near the horizon - they seem to be still straight lines where
> stitching between frames is obvious, with no morphing. This seems to
> occur near the horizontal joins at the horizon of the pano.
>
> I use Helmut Dersch's Panotools running behind PTGUI 5.8.4, I now
> shoot in RAW with the orientation tag set by the camera off and I
> convert in Photoshop CS2 to TIFFs; I set the stitching points
> manually; ! use Enblend where the light changes to soften the
> transitions as needed.
>
> In PTGUI is straighten the horizon if this is needed, and patch a
> zenith and nadir as necessary.
>
> The QTVR is created with Panocube's registered version.
>
> You can see this problem at URL
> http://geoimages.berkeley.edu/worldwidepanorama/wwp306/html/NormanPete
> rs.html and my latest WWP entry (coming soon, as its not yet made it
> off the preparation server), URL
> http://geoimages.berkeley.edu/worldwidepanorama/wwp906/html/NormanPete
> rs.html - look for the roadways. I can post this pano to my home
> space if you want to see it early - let me know.
>
> I am not looking for answers such as "switch to a circular
> fisheye", "buy another camera" type-reponses. I suppose what I really
> need to know how to set up PTGUI to stitch these properly.
>
> And while I am asking questions, I need info on using layers to paint
> in or out elements at frame transitions - the info on the PTGUI FAQ
> about this doesn't seem to work in CS2 even though i follow the
> guidance exactly.
>
> What am I doing wrong? Any help will be most appreciated.
>
> Norman Peters
> Canberra, Australia
>
> (emails - #removed# or
> #removed# but remove the 123 spam stopper first)
>
>
>
>
> ------
> The World-Wide Panorama
>
> For more information:
> -Visit the web site at http://GeoImages.Berkeley.edu/wwp.html
> Yahoo! Groups Links
>
>
>