Image-stitching and virtual tour solutions My account Updates
It is currently Fri Sep 19, 2014 4:53 pm

All times are UTC + 1 hour




Post new topic Reply to topic  [ 7 posts ] 
Author Message
PostPosted: Wed Sep 04, 2013 9:05 pm 
Offline
Member

Joined: Fri Jul 17, 2009 8:51 am
Posts: 29
Hi,

After having shot many GigaPixel panos with Gigapan equipment, I've replaced my (outdated and worn-out) Gigapan with a brand new PanoGear, controlled via Papywizard.

While test shooting (pitch before yaw) panos, I've noticed a tremendous drop in pitch from column to column. I thougt it's due to a non balanced weight of my camera and 300mm lens. So I've made sure the total weight of my camera equipment (1.2 kilo) is definitely at the center of the PanoGear axis.

Today I went out to shoot a "real" GigaPixel pano - this time not pitch before yaw, but vice versa without CR checked. My pano was 30 pictures horizontally and 8 pictures vertically. The shot started top left - then to the right, one row down, to the left, one row down a.s.o.

I've noticed that the yaw got an offset to the left of almost (or should I say exactly) one picture for each row shot. So the pictures of each row are moved one picture to the left, ending up with a total POV that looks like a parallelogram...

Any hints on this problem - I suppose it's just an error I made with setting up Papywizard correctly (Papywizard newbie...), but why is this and how can I prevent it?

thanks for all your input and knowledge,

Thomas


Top
 Profile  
 
 Post subject:
PostPosted: Wed Sep 04, 2013 9:31 pm 
Offline
Member

Joined: Wed Nov 14, 2007 2:12 pm
Posts: 13967
Location: Isleham, Cambridgeshire, UK.
tcgass wrote:
Any hints on this problem - I suppose it's just an error I made with setting up Papywizard correctly (Papywizard newbie...), but why is this and how can I prevent it?

thanks for all your input and knowledge,

Thomas

It's a Papywizard software 'bug'/undesirable feature which arise when using longer focal length lenses- but despite a lot of 'forensic' effort the developer was never able to find it, or work out why it happens. I think we discovered that it wasn't there in Papywizard 1.7 (as I recall) but appeared in later versions.

See: http://www.kolor.com/forum/t8952-merlin-does-not-center-correctly-when-taking-shots

As I recall you can prevent it by disabling the Alternate drive on Yaw and Pitch axes, see screenshot, but this increases the shooting time.

Or you could allow for it and crop later.

A more radical solution would be to use a T&C Touch controller.



_________________
Andrew Stephens
Many different Nodal Ninja and Agnos pano heads. Merlin/Panogear mount with Papywizard on Nokia Internet tablets.
Nikon D5100 and D40, Sigma 8mm f3.5 FE, Nikon 10.5mm FE, 35mm, 50mm, 18-55mm, 70-210mm. Promote control.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Sep 04, 2013 10:17 pm 
Offline
Member

Joined: Fri Jul 17, 2009 8:51 am
Posts: 29
Wow, thanks, that was quick! :-) I'll try to disable the alternate drive so,... thanks a lot for another worhful hint, medivets!
thomas


Top
 Profile  
 
 Post subject:
PostPosted: Thu Sep 05, 2013 11:22 am 
Offline
Member

Joined: Mon May 22, 2006 12:18 am
Posts: 7733
Location: Duesseldorf, Germany
mediavets wrote:
A more radical solution would be to use a T&C Touch controller.

Hi!

I definitely suggest to use a T&C controller. I used PW for quite a time with the Merlin and shot some gigapixels with it.

I had two issues:
1) using a 300mm lens the Merlin/PW was extremely slow.
2) it produced differences between the xml-positions and te mechanical positions. Sometimes it was almost impossible to get a good stitch without hours and hours of editing.

Switching to the T&C controller was the first big step regarding reliability/precision and speed. It´s very small, needs no adressing via BT or WLan but uses a cable from
5cm up to 15m, gets powered from the head´s accus and it´s power consumption is VERY low.

I made a short description of it´s functionality - not yet finished but containing the main items:
http://www.panoneed.com/S4.html

There´s a Merlin-version and a Panoneed-version.

best, Klaus

PS:

It´s not my intention to promote the TC and Panoneed. I just use both of them intensely for professional/commercial producing and never had any issue with one of them - and i´m again and again impressed by the consequence and ingenuity both of them provide.

_________________
Simplicity is the keynote of all true elegance. Coco Chanel


Last edited by klausesser on Thu Sep 05, 2013 12:00 pm, edited 1 time in total.

Top
 Profile  
 
PostPosted: Mon Oct 07, 2013 3:57 pm 
Offline
Member

Joined: Fri Jul 17, 2009 8:51 am
Posts: 29
Thanks Klaus for your detailed information!
So far everything runs fine for me now, fast and accurate, no stitching problems and also accu life time is perfect.

I still have the first Giga pano I shot where I didn't deactivate the alternate drive yet (set to 7 degrees), but I can't succeed in stitching it. It was shot right to left, yaw before pitch. Since I can't repeat this shooting and I would really love to have it stitched, is there a way to make it work? Is it possible to alter the Papywizzard xml file?

This would really be great - all panos I shot after that, do word perfectly,

Thomas


Top
 Profile  
 
PostPosted: Mon Oct 07, 2013 6:00 pm 
Offline
Member

Joined: Wed Nov 14, 2007 2:12 pm
Posts: 13967
Location: Isleham, Cambridgeshire, UK.
tcgass wrote:
Thanks Klaus for your detailed information!
So far everything runs fine for me now, fast and accurate, no stitching problems and also accu life time is perfect.

I still have the first Giga pano I shot where I didn't deactivate the alternate drive yet (set to 7 degrees), but I can't succeed in stitching it. It was shot right to left, yaw before pitch. Since I can't repeat this shooting and I would really love to have it stitched, is there a way to make it work? Is it possible to alter the Papywizzard xml file?

This would really be great - all panos I shot after that, do word perfectly,

Thomas


It should stitch with the XML file using the Papywizard Import filter/wizard but it will exhibit the 'stepping' you mention, and there is no way around that..


Top
 Profile  
 
PostPosted: Thu Nov 07, 2013 11:52 am 
Offline
Member

Joined: Mon May 22, 2006 12:18 am
Posts: 7733
Location: Duesseldorf, Germany
tcgass wrote:
Thanks Klaus for your detailed information!
So far everything runs fine for me now, fast and accurate, no stitching problems and also accu life time is perfect.

I still have the first Giga pano I shot where I didn't deactivate the alternate drive yet (set to 7 degrees), but I can't succeed in stitching it. It was shot right to left, yaw before pitch. Since I can't repeat this shooting and I would really love to have it stitched, is there a way to make it work? Is it possible to alter the Papywizzard xml file?

This would really be great - all panos I shot after that, do word perfectly,

Thomas


When you have an exact angle and the focal length it might be worth a try simulating the sequence . .

Did you try without PW-xml import? In the end there still is the "old school" way . . =D :cool:

Did you try other stitchers?

Can you show an example of what you achieved so far?

best, Klaus


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC + 1 hour


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group