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Perils of Watching Frisbee and Taking Hand-Held GigaPans - Version 1 (S-Shape) by David Engle

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About This Gigapan

Taken by
David Engle David Engle
Explore score
0.85 Gigapixels
Date added
Jul 18, 2009
Date taken
Jul 18, 2008

The other attempt at stitching can be seen here: www.gigapan.org/viewGigapan.php?id=28415 .

GigaPan Stitcher version 0.4.4087

Gigapan Comments (3)

Toggle Minimize gigapan_comment
  1. The Gigapanographer Currently Known as "Kilgore661"

    The Gigapanographer Currently Known as "Kilgore661" (July 20, 2009, 02:29AM )

    No, I have never seen anything like that either! Did you know that a very early version of the stitcher used to do weird things with images and a group of artists enjoyed using it so much that when the stitcher was replaced with a 'better' version they asked gigapan if they could have a copy of the original. (I think that back then you had to upload your images to be stitched.) Re photos not being level, I wasn't suggesting that one or two images are not level (which is unavoidable in the circumstances, as you say), but that the stitcher thinks that the whole gigapan is tilted at 45º or something. I am sure that you have experimented with the tilt option when geocoding? If you have an image that has a field of view of, say, 100º, and it has stitched straight enough, then tilting raises one end and drops the other - fairly obvious so far. But what if the image is a 360? You can't have one end going up and the other going down because the ends have to match up. So what happens is you get an S-shape distortion just like your gigapan, so that's why I suggested you try re-geocoding it and seeing what happens if you change the tilt. Another thought is that perhaps the bug that is responsible for the distortion manifests itself when there is (or the stitcher thinks there is) insufficient overlap. See eg gigapan.org/viewGigapan.php?id=2011 6. Have you looked at your original photos and compared the actual overlap with what the stitcher thinks the overlap is?

  2. David Engle

    David Engle (July 20, 2009, 02:19AM )

    This was a hand-held panorama (no tripod), so you are correct that there was a few photos that were not level, but I have never seen the circular structure as seen in www.gigapan.org/viewGigapan.php?id= 28415 ... that is why I stitched it with another version of the Stitcher to see what the results would be.

  3. The Gigapanographer Currently Known as "Kilgore661"

    The Gigapanographer Currently Known as "Kilgore661" (July 20, 2009, 01:47AM )

    Just a thought - this S shape is what you get when you take a 360 and for some reason the stitcher thinks the camera was not level. Have you tried altering the 'Camera Tilt' when geocoding (under Advanced Options). You may find you can straighten it out, at least when viewed in Google Earth.

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Stitcher Notes


GigaPan Stitcher version 0.4.4087 (Macintosh)
Panorama size: 847 megapixels (59944 x 14141 pixels)
Input images: 38 (38 columns by 1 rows)
Field of view: 188.1 degrees wide by 44.4 degrees high (top=22.5, bottom=-21.9)
All default settings
Original image properties:
Camera make: Canon
Camera model: Canon PowerShot SX110 IS
Image size: 2592x3456 (9.0 megapixels)
Capture time: 2008-07-18 11:26:21 - 2008-07-18 11:28:56
Aperture: f/8
Exposure time: 0.00625
ISO: 80
Focal length (35mm equiv.): unknown
White balance: unknown
Exposure mode: unknown
Horizontal overlap: 15.7 to 62.7 percent
Computer stats: 2048 MB RAM, 2 CPUs
Total time 32:49 (0:51 per picture)
Alignment: 1:26, Projection: 3:10, Blending: 28:13

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