Roberto Schembri
Posts: 4
Location: European Union
Registered: 16 May 2007
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Really need help...I do not manage to stitch those images...
Posted: 16 May 2007 at 9:46 GMT
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Hi everybody...
I really need your help...
If you can have a look at
www.glasstemptation.com/helpvt.htm
I put a couple of images I took with Nikon Coolpix 8700 - Agnos Rotator and FC-E9...
I just bought the equipment but I do not manage to stitch the images together... anyone has a good advice...
I'm curious to know if somebody manage to stitch them and can show me an example of the final result.
I will appreciate as well some advice regarding the quality of the photos... I reduced the size of the images to put them on the internet.
Really need help.
Many thanks,
Roberto
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John Houghton
Posts: 2308
Location: Hitchin, United Kingdom
Registered: 17 Jan 2005
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Re: Really need help...I do not manage to stitch those images...
Posted: 16 May 2007 at 11:21 GMT
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Roberto, I stitched the images with PTGui:
(I adjusted the colour a bit). You would find stitching easier with 3 around than with 2. The overlap is very small.
John
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zxcvbnm
Posts: 420
Location:
Registered: 3 May 2005
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Re: Really need help...I do not manage to stitch those images...
Posted: 16 May 2007 at 11:42 GMT
updated: 16 May 2007 at 11:45 GMT
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www.dreva.eclipse.co.uk/2shot/
There was not enough overlap, or the images were too small, to automatically find control points but just enough maybe to stick some on by hand.
Nice to see you have come over from the ivrpa forum. I look forward to hearing how you crack the London panorama market with a certain amount of trepidation but the best of hope. Do check out the easypano forum as well. If has lots of good stuff and if you search you will find threads by people who started with similar problems.
Basically, assuming you are using ptui, you are aren't you?
Look for the fisheye option on your camera. Then the camera will adjust its settings for the lens and tell ptgui that its a circular fisheye lens. Worth a try.
In taking pictures zoom in lots more. You should at least have the circle touching the edge of your shot.
To maximise your image quality still more mount the camera sideways in portrait position. Zoom in so the top and bottom of the circle touch the edges of the image and the sides of the circle are cut off. You will now need three shots around to complete the circle but a much better image and easier stitch. You can also be extreme to get every last bit out of it by tilting sideways and using the diagonal of your picture frame read this tinyurl.com/2zc7nu .
Ideally shoot at f8. Go to aperture priority mode set the camera to f8 and see what shutter speed it recomends the go to manual mode and enter f8 and that shutter speed, take your three pictures.
Plug into Ptgui, check the lens is set to circular, check the crop circle in the crop tab is correctly tight over the circles. Click the align images button, create your panorama and you should have an ok image.
So basically,;
put camera on side
zoom in lots cutting off sides of circle
f8
three shots around (you have click stops lucky person)
Stick into pgui and stitch,
good luck
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Seba
Posts: 19
Location: Kuala Lumpur, Malaysia
Registered: 19 Aug 2005
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Re: Really need help...I do not manage to stitch those images...
Posted: 16 May 2007 at 12:08 GMT
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Sorry to barge in but I was really intrigued by your results guys. I'm just starting to
play around with ptgui and must say I'm very impressed, even tho I'm stitching just few
photos of horizontal outdoor panoramas (still don't have panohead and fisheye lens, budgeting),
the results are great. I was wondering, if either one of you would be kind enough to screen
shot or step-by-step how did you straighten it so well ? I have been trying for last 20 minutes
and I'm no near such results :P I'm really new and this and went through the manuals but it's
rather general and the sample attached "straighten a panorama" kind of do for what I'm playing
with now but not the kind of images I see here.
Could you please spare a minute to explain how did you set the program to get it done ?
Thank you very much for your time.
regards
Sebastian
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zxcvbnm
Posts: 420
Location:
Registered: 3 May 2005
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Re: Really need help...I do not manage to stitch those images...
Posted: 16 May 2007 at 12:40 GMT
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I'd like to say I'd been clever but I think the photos were level already so I did not have to do anything...
When I have tried leveling I've followed John's tutorial here homepage.ntlworld.com/j.houghton/levtut.htm . The main thing to pay attention to is which boxes to tick on the optimizer tab and to use the panotools optimiser not ptgui. Otherwise you just add some vertical control points, you have to be in advanced mode to get the option, and optimise. So long as you have some obviously vertical details in your images.
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DorinDXN
Posts: 1692
Location: Timisoara, Romania
Registered: 14 Nov 2006
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Re: Really need help...I do not manage to stitch those images...
Posted: 16 May 2007 at 13:32 GMT
updated: 16 May 2007 at 13:41 GMT
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Just passing by to say that can almost (I've saw some distorsions) be done in Hugin
I'm curious what lens parametters did you obtained in PTGui?
Dorin
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Savak
Posts: 188
Location:
Registered: 18 Oct 2004
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Re: Really need help...I do not manage to stitch those images...
Posted: 16 May 2007 at 13:54 GMT
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I have an I**X rotator that only took two pictures but I took it to someone who had a CNC milling machine and got them to put some extra dents in the part that rotates. This gives me up to six shots around, but of course only three are required. The results improved substially. I use this setup for small size panos about 600*400 in Quicktime.
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John Houghton
Posts: 2308
Location: Hitchin, United Kingdom
Registered: 17 Jan 2005
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Re: Really need help...I do not manage to stitch those images...
Posted: 16 May 2007 at 14:17 GMT
updated: 16 May 2007 at 14:18 GMT
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DorinDXN said: I'm curious what lens parametters did you obtained in PTGui?Dorin
Dorin, Mine was a quick stitch with very few control points - not enough to evaluate lens parameters properly. I just left a=b=c=0. The hfov (of the circular cropped image) came out as 187.2 degrees. This is not directly comparable with Hugin's hfov as Hugin doesn't have a crop option (only a circular selection or mask).
John
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DorinDXN
Posts: 1692
Location: Timisoara, Romania
Registered: 14 Nov 2006
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Re: Really need help...I do not manage to stitch those images...
Posted: 16 May 2007 at 14:30 GMT
updated: 16 May 2007 at 14:31 GMT
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John Houghton said: This is not directly comparable with Hugin's hfov as Hugin doesn't have a crop option (only a circular selection or mask).
So from that comes my 311 hov, I will try to crop the image source to apply your 187.2, besides more points could be also needed for more overlap to evaluate the lens corectly?
thank you,
Dorin
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John Houghton
Posts: 2308
Location: Hitchin, United Kingdom
Registered: 17 Jan 2005
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Re: Really need help...I do not manage to stitch those images...
Posted: 16 May 2007 at 14:41 GMT
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Seba said: Could you please spare a minute to explain how did you set the program to get it done ?
I have sent you a copy of the project file in an email. Otherwise, the tutorial explains the how and whys.
John
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DorinDXN
Posts: 1692
Location: Timisoara, Romania
Registered: 14 Nov 2006
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Re: Really need help...I do not manage to stitch those images...
Posted: 16 May 2007 at 15:03 GMT
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Cropping the sources before to add images in Hugin helps a lot.
Distorsions gone
Dorin
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Midgeycity
Posts: 40
Location: Newton Stewart, United Kingdom
Registered: 6 May 2006
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Re: Really need help...I do not manage to stitch those images...
Posted: 19 May 2007 at 11:33 GMT
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zxcvbnm said: www.dreva.eclipse.co.uk/2shot
Look for the fisheye option on your camera. Then the camera will adjust its settings for the lens and tell ptgui that its a circular fisheye lens. Worth a try.
In taking pictures zoom in lots more. You should at least have the circle touching the edge of your shot.
To maximise your image quality still more mount the camera sideways in portrait position. Zoom in so the top and bottom of the circle touch the edges of the image and the sides of the circle are cut off. You will now need three shots around to complete the circle but a much better image and easier stitch. You can also be extreme to get every last bit out of it by tilting sideways and using the diagonal of your picture frame read this tinyurl.com/2zc7nu .
zxcvbnm
This is very sound advice but the problem with trying to use it with this set up is that when putting the camera in 'fisheye mode' it disables a number of things including the ability to zoom or refocus so you have to go with a full circular image.
In addition the weight of the camera is usually supported by a bracket which goes from the bottom of the MrotatorB to the bottom of the camera - so you can't turn the camera on its side unless you remove the bracket and then the full weight of the camera is borne by the FC-E9 tube.
So it is possible but fiddly - and the FC-E9 is such a soft lens (adaptor really) that there doesn't seem to me to be a huge improvement in image quality if you do tell the camera it is a standard lens and then zoom in.
Regards
Alan
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ebig
Posts: 154
Location: Haiku, Maui, Hawaii, United States
Registered: 21 May 2007
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Re: Really need help...I do not manage to stitch those images...
Posted: 21 May 2007 at 3:57 GMT
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I'm now working with a Nikon P5000 with the FC-E8 converter on a monopod. I find 3 images an absolute minimum to use the sharpest part of the lens, and < f:6.5 because the P&S camera really seems to soften up stopped down further.
I do not set for WA or fisheye, use all manual settings, and am able to zoom and get acceptable images.
After stitching, Not zooming = a 10mB file, zoom 1 step = 13mB, 2 steps (vertical) = >20mB and 3 steps (vertical) = ~22mB. The latter require 4 shots and a zenith shot or some Photoshop. So a 2-step zoom yeilds 4x data. Tonight I'll try the diagonal method.
Recent attempt (3 shots without zoom):
www.ebigfoto.com/images/hawaii/m-kapukaulua-04.ht...
Regards,
Ed
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ebig
Posts: 154
Location: Haiku, Maui, Hawaii, United States
Registered: 21 May 2007
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Re: Really need help...I do not manage to stitch those images...
Posted: 21 May 2007 at 5:35 GMT
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Ooops...aging mind slipped the math...multiply previous mB x3 for 24-bit. So the earlier 4 (vertical) stitched shot 2-step zoom = 62mB (24 bit) file - 6580x3290.
A 4 shot (diagonal) stitched 3 step zoom = 90mB file, just under 8000x4000. But working it is a little awkward.
Ed
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