[ptx] HFOV, focal distance...

[Lars Schimmer]

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Terje Mathisen wrote:

> After literally days of calibration, I came up with the following
> parameters:
> 
> Max wide angle (7,5 mm, Portrait mode):
>   a: 0,006312, b: -0,028406, c: 0,011234, HFOV: 39,654
> 
> Max zoom (19,8 mm, Portrait):
>   a: -0,000391, b: -0,002956, c: 0,003308, HFOV: 15,554
> 
> 
> The tele parameters are particularly good, mosaics taken using those
> usually show very close to zero residual control point errors after
> optimization.

So, now the question: WHAT are the a,b,c parameters exactely and how did you get
those numbers?
And at least, what meanings do they have for panorma creation?
(even a link to a good site is acceptable ;-) ).
For me, making pictures with my sony and importing them with a crop factor of 4
is leading to a acceptable panorama, but if I can enhance it with these numbers,
great.
Btw, anyone has the numbers for a Sony DSC F828? :-)

> Terje

Cya
Lars
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Technische Universität Braunschweig, Institut für Computergraphik
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