Thanks for your reply. I agee I can see the power of panotools. I do find it hard to decifer the actual goings on in cylindrical panorama generation. I think it requires some getting used to.
From: Erik Krause <erik.krause@...
Sent: Tue, 27 April, 2010 16:44:08
Subject: [PanoToolsNG] Re: Cylindrical Panoramas from Fisheye
Am 27.04.2010 13:56, schrieb Larry Murray:
> I was wondering if anyone can point me to a good source on creating
> cylindrical panorama images from fisheye lenses.
If you simply want to create a cylindrical panorama of a fisheye I'd
suggest one of the panotools GUIs like PTGui, hugin or PTAssembler:
In those applications you choose fisheye as input projection,
cylindrical as output, interactively adjust field of view and your'e done.
> I had a look at
> libpanorama from sourceforge and can see the functions for
> cylindrical projection but I cannot understand the process. Does
> anyone know of a stand alone function that has the equations/code to
> go from a fisheye input to a cylindrical panorama. I understand the
> general projection...mostly...but cannot get the equations right.
I don't know much about the remapping technique used in panotools, but
one of it's strength is the usage of a transformation stack. All
necessary transformation functions are put on a stack. In your case this
would be eventually apply lens correction, remap from fisheye, remap to
cylindrical. The beauty of this technique is that interpolation occurs
only once no matter how complex the remapping is. This minimizes image
degradation but of course makes the source code hard to understand. Good
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