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Braye Beach, Alderney, UK by John De Carteret

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About This Gigapan

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Taken by
John De Carteret John De Carteret
Explore score
100
Size
1.98 Gigapixels
Views
3453
Date added
May 25, 2009
Date taken
May 22, 2009
Gear

Canon S5is

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Description

A view looking south over the beautiful sandy beach, from the small jetty. But what did I do wrong to get the curve and cracks in the stitching?


Gigapan Comments (1)

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  1. The Gigapanographer Currently Known as "Kilgore661"

    The Gigapanographer Currently Known as "Kilgore661" (May 25, 2009, 10:47PM )

    I think there are two issues here. First, there are the splits in the bottom of the image. I believe the existence of splits is caused by insufficient horizontal overlap which means the stitcher has been unable to identify matching features, and this in turn has caused the right-hand end of the pano to 'flick up'. Have a look at the original images to see how much overlap there is - the stitcher notes report the overlap is a little as 0.7%. All sorts of mad things happen when there is insufficient overlap for the gigapan stitcher. Eg www.gigapan.org/viewGigapan.php?id= 20116.The second issue is the sweeping curve of the pano. I don't know what causes this but I have noticed it in some very wide panos - i.e. ones shot with a very small step size. It could be a bug in the stitcher, or it could be that in order to get the projection correct for viewing in Google Earth, all panoramas are slightly curved like this. It is only when the pano is very large that we can actually see it. I have asked the stitcher team about this but I have yet to hear back. Here is one of my recent panos with the same 'problem': www.gigapan.org/viewGigapan.php?id= 24064. And here is another with it in spades: www.gigapan.org/viewGigapan.php?id= 15901.Check out the largest panos to see similar problems (click on 'Most Popular' then click on 'sort by size' - there is at least one with splits like yours). HTH

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Where in the World is this GigaPan?

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Stitcher Notes

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GigaPan Stitcher version 0.4.3865 (Macintosh)
Panorama size: 1977 megapixels (119822 x 16505 pixels)
Input images: 234 (39 columns by 6 rows)
Field of view: 166.5 degrees wide by 22.9 degrees high (top=19.6, bottom=-3.3)
Settings:
All default settings
Original image properties:
Camera make: Canon
Camera model: Canon PowerShot S5 IS
Image size: 3264x2448 (8.0 megapixels)
Capture time: 2009-05-22 11:10:12 - 2009-05-22 11:27:59
Aperture: f/8
Exposure time: 0.008
ISO: 80
Focal length (35mm equiv.): 435.8 mm
Digital zoom: off
White balance: Fixed
Exposure mode: Manual
Horizontal overlap: 0.7 to 53.8 percent
Vertical overlap: 14.6 to 36.7 percent
Computer stats: 3072 MB RAM, 2 CPUs
Total time 2:30:07 (0:38 per picture)
Alignment: 10:33, Projection: 14:16, Blending: 2:05:16

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