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see animated setup [flash 1mb] click here

"Over the Edge" Horizontal Pole Panoramas (14Aug2007)
Purpose: Use a Telescoping Pole to create panoramas OVER THE EDGE.  Take 4 or more images.  

Ptgui Ver 7.2 although this can be done in earlier software versions

Dave Albright
Rodrigo Alarcon-Cielock (UK) http://www.360panoview.co.uk/
Martin Hrdlicka (CZ) http://www.panorama360.cz 
John Houghton - PanoToolsNG UK
Yuval Levy - PanoToolsNG Canada
Milko Amorth - PanoToolsNG Canada

See the final panorama.. click below:
curved horizon - curved deliberately left unchanged to show difference
straight horizon - courtesy of John Houghton  straight

Link to John Houghten "How to Level a panorama"

Equipment: Canon 5d, Sigma 8 f3.5, Agno's Telescoping HD Pole
 

1  2  3  4 The camera has an internal leveling mechanism it thinks it knows which side is UP. Picture: 1 up, 2 back, 3 Down, 4 upside down back.

 Test set of Sigma 8mm f3.5 JPEG 4 images
Download ZIP 17mb

Open Ptgui and load 4 images.  "Align Images" and this is what you will see in the panorama editor.


 

Yuval Levy suggested there are three ways to correct alignment. In order of (my) preference:

- making proper use of vertical and horizontal control points during
optimization (my favorite, though not always possible because it depends
on having vertical features or the horizon handy)

- applying a numeric transform (a quick solution that works best when
the camera's orientation was set perfectly level - not the case of a
hand held wobbling pole)

- manually fiddling the panorama editor. the worst solution as it
suffers of the lack of precision of mouse movements


Note  look in the panorama editor how the image assembly changes.  If it does not change to the desired view meaning.. Image top is really at the top.. then find on the upper right corner.. the circle rotation arrow.. click it until the image set rotates.. and the panorama editor view looks like above left.  Optional next step is to center the panorama.  On the left side find the [+] icon then click on the image the desired new center [+]

John Houghton - PTGui doesn't know the images were taken with a camera on the end of a pole. It will treat the images just the same as any images taken in a conventional way, assuming you have rotated them all into the same orientation (I rotate them into the -90 position, as indicated in the
metadata displayed by ACR). The numerical transform option does just what it is supposed to do when I use it with Nikkor 10.5 or Tokina 10-
17 images. Also the pano needs to be leveled using some t1 control points.   John

Milko Amorth - It does not matter what lenses are used in a any pitched angle shooting position. What matters is, that you pitch the "entire" (click the button for it) projection of the panorama in the PTGui editor. You could also pitch each individual image in the image parameter panel settings.....but why spend more effort than needed? You can do that manually just by dragging the projection in the editor any place or use the numerical input panel. It can also be done in PS with the PTadjust plug in with any finished rendered projection. That applies to roll, pitch and yaw angles within a sphere. Cheers Milko
 

Rodrigo provides this information when using the Tokina 10-17 at 10mm: below is as loaded and aligned. He rotated the image set [see circle arrow on upper right side] few times, in order to achieve the proper image orientation.

See panorama - he says needs stitch cleaning up  3mb
 

 

 


Martin provided this information 

  

 

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