Hi Augustin,
The itk class used in the app are not able to do the first option as it.
However I invite you to take a look to the app code because it is no so
simple: we manage the scaling trough a modification of the spacing and
we manage also the position of the rotation center (here the center of
the image). When you do the affine formula that you indicated the center
of the rotation is the left up corner.
Best
Mickaël
Le 25/06/2015 14:23, Agustin Lobo a écrit :
Found my way through option 2.
Still interested on knowing if option 1 is currently possible.
Agus
On Thu, Jun 25, 2015 at 12:31 PM, Agustin Lobo <[email protected]> wrote:
Is there any(otbcli) way of applying a 6-parameters affine transformation?
otbcli_RigidTransformResample allows for including sx, sy, angle, dx, dy
thus in principle I should be able to apply:
X' = sx X cos(alpha) - sy Y sin(alpha) + xo
Y' = sx X sin(alpha) + sy Y cos(alpha) + yo
but my fit from homologous points results on:
X' = aX - bY + xo
Y' = cX + dY + yo
so I would need either
1. An otbcli accepting the 6 parameters
2. A way to find sx, sy and angle alpha from a, b, c and d.
Any help appreciated,
Agus
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