Quote:
Originally Posted by redfordxx
Sorry maybe for me being slow:
I made defish using a,b,c parameters.
Now I am asking what is the resulting projection supposed to be?
Rectangular?
Because when I am going to change the projection using the tools mentioned, I need to know what I am starting with.
That's what I've asked few posts above.
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?????
Maybe I'm the one that is slow...
It can be anything depending what your values are , and what you start with
eg. If you start with "normal" equirectangular projection, you can impose a lens distortion. Create one. If you start with a "fisheye" you can "undo" it or make it more pronounced (pincushion / barrel) . You can do whatever you want
If you cannot find your camera lens profile somewhere, if you don't know what you have - normally you would need to do a lens calibration. Essentially you shoot a grid pattern. Then measure or estimate what you have.