leon33
Posts: 38
Location: Mersin - Tarsus, Turkey
Registered: 11 Feb 2010
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PTGUI stitch problem...
Posted: 6 Jun 2010 at 15:41 GMT
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My equipments... Canon Rebel XSI, Sigma 4.5mm fisheye, Manfrotto 303sph. 3 shot vertical + 1 shot UP
But When I stitch PTGUI... I live stitch problem... Maybe I shall use control points PTGUI...
What do you think about this stitch problem? How can I do? How I use control points? have u got any manuals?
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Doug Aurand
Posts: 3282
Location: Albuquerque, NM, United States
Registered: 2 Jan 2008
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Re: PTGUI stitch problem...
Posted: 6 Jun 2010 at 18:23 GMT
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leon33
If you are sure your NPP position is correct, you should manually add control points near the misalignment
But that looks like a NPP problem to me
Can you show a screen capture of the Nadir in the stitched image?
Doug Aurand
Albuquerque, NM
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leon33
Posts: 38
Location: Mersin - Tarsus, Turkey
Registered: 11 Feb 2010
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Re: PTGUI stitch problem...
Posted: 6 Jun 2010 at 19:12 GMT
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hi Doug Aurand ,
Thanx for interest... I send another stitch problem... but I dont understand NPP... what does it mean? balance?
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Doug Aurand
Posts: 3282
Location: Albuquerque, NM, United States
Registered: 2 Jan 2008
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Re: PTGUI stitch problem...
Posted: 6 Jun 2010 at 20:02 GMT
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leaon33
NPP means No Parallax Point
How did you decide the forward and back position on the camera on the 303sph?
Doug Aurand
Albuquerque, NM
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Doug Aurand
Posts: 3282
Location: Albuquerque, NM, United States
Registered: 2 Jan 2008
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Re: PTGUI stitch problem...
Posted: 6 Jun 2010 at 20:10 GMT
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Do you have the free FSPViewer?
It will let you view an Equirectangular Projection locally and look straight down at the Nadir.
You can do a Screen Capture of the Nadir, post it and I may be able to tell you the problem
Doug Aurand
Albuquerque, NM
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John Houghton
Posts: 3412
Location: Hitchin, United Kingdom
Registered: 17 Jan 2005
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Re: PTGUI stitch problem...
Posted: 7 Jun 2010 at 6:03 GMT
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Leon, you can check the setup of your panorama head using this guide: www.johnhpanos.com/epcalib.htm . As to control points, there is a tendency for the points generator to cluster the points in the centre of the overlap areas. You may need to assign points on identical features in the areas near the top and bottom of the images so that the optimizer can align those areas accurately. (With blue sky, you may not be able to find features towards the zenith. Avoid having points on moving objects like clouds). The other thing you can try is to select advanced mode using the button on the right of the Project Assistant tab and go to the Optimizer tab: in the Minimize lens distortion option, select Heavy+lens shift, and click on the Run Optimizer button. That should improve the results. Another option worth trying is the "Delete worst control points" on the Control Points menu - the re-optimize. This will get rid of any inaccurately positioned points.
John
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leon33
Posts: 38
Location: Mersin - Tarsus, Turkey
Registered: 11 Feb 2010
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Re: PTGUI stitch problem...
Posted: 7 Jun 2010 at 14:35 GMT
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Thx everthing John Houghton .... I'm really new in this business. You gave very helpful links. Heavy + lens shift also a very good clue. I'm really grateful.
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Doug Aurand
Posts: 3282
Location: Albuquerque, NM, United States
Registered: 2 Jan 2008
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Re: PTGUI stitch problem...
Posted: 7 Jun 2010 at 15:02 GMT
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leaon33
I found the thread that Smooth posted on the Easypano forum that has Nadir screen caps showing what the tripod and Nadir hole look like for various No Parallax Position problems
If you can view the tripod in your stitched images or take some with a 5-7° tilt down so you can see the tripod, his samples might send you in the right direction
Go to www.easypano.com/forum/default.asp, click on the Panoweaver forum and search for Zoning in on perfect (NPP) via Nadir view
They're really helpful
Good luck
Doug Aurand
Albuquerque, NM
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Ranjan Pano
Posts: 145
Location:
Registered: 20 Jun 2006
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leon33
Posts: 38
Location: Mersin - Tarsus, Turkey
Registered: 11 Feb 2010
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Re: PTGUI stitch problem...
Posted: 8 Jun 2010 at 4:08 GMT
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After aligment... Tarsus Konak Efsus Hotel Room ...
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John Houghton
Posts: 3412
Location: Hitchin, United Kingdom
Registered: 17 Jan 2005
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Re: PTGUI stitch problem...
Posted: 8 Jun 2010 at 6:15 GMT
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Leon, Your stitch looks ok, though it's not a large enough image to judge its technical quality adequately. One thing that can be seen is that it's in need of levelling, to get the verticals properly upright. This is a simple operation: see www.johnhpanos.com/levtut.htm.
John
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Marcello Geerts
Posts: 5
Location: Hoofddorp, Netherlands
Registered: 7 Jul 2010
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