Am 29.06.2016 um 14:22 schrieb Finfa811:
How do I convert my a,b,c parameters to OpenCV style "k_1, k_2, p_1, p_2[,
k_3[, k_4, k_5, k_6]]"?
The a,b,c parameters define a polynomial curve which describes the
distortion of the image. See
http://wiki.panotools.org/Lens_correction_model for deta
I've found a solution in the following link:
*http://www.panotools.org/dersch/barrel/barrel.html*
- a = k2 * (width/2)3
- b = 0
- c = k1* (width/2)
- d = 1
The minimum input that OpenCV uses for its polynomial is k1k2p1p2 (4
parameters). In my case, just the parameter c was not zero
Hallöchen!
Finfa811 writes:
> I've found a solution in the following link:
>
> *http://www.panotools.org/dersch/barrel/barrel.html*
>
>- a = k2 * (width/2)3
>- b = 0
>- c = k1* (width/2)
>- d = 1
>
> The minimum input that OpenCV uses for its polynomial is k1k2p1p2
> (4 parameters
In my case it is working, maybe it's just coincidence because I've checked
the polynomials and you are right. Probably the ccd width value is the
correct one that returns a valid solution in my case.
In any case it would be nice to try with different lenses.
El viernes, 1 de julio de 2016, 9
Hallöchen!
'Bruno Postle' via hugin and other free panoramic software writes:
> Yes, there is no direct conversion possible unless you limit the
> parameters. However given the two formulas, this is a curve fitting
> problem - it ought to be possible to get a very good approximation
> with a spre
Yes, there is no direct conversion possible unless you limit the
parameters. However given the two formulas, this is a curve fitting
problem - it ought to be possible to get a very good approximation
with a spreadsheet solver.
--
Bruno
On 1 July 2016 at 08:25, Torsten Bronger wrote:
> Hallöchen!
'Bruno Postle' via hugin and other free panoramic software wrote:
Yes, there is no direct conversion possible unless you limit the
parameters. However given the two formulas, this is a curve fitting
problem - it ought to be possible to get a very good approximation
with a spreadsheet solver.
I
