Guillaume is right. Origingate has been solved, but the Quicklook filter
is a decimation one, it can not preserve origin/footprint because the
sampling grid must be congruent to the original sampling grid. This is
why it works fine with RigidTransformResample.
Julien
Le 04/01/2017 à 18:15, Guillaume Pasero a écrit :
I think it is a separate problem.
The filter used in Quicklook is a "decimation" filter. There is a
"TODO" about using the center of the cell.
The fix may cause that the initial image and its quicklook don't have
exactly the same footprint.
You can fill a bug report.
Guillaume
On 01/04/2017 04:16 PM, Poughon Victor wrote:
Related but probably separate:https://bugs.orfeo-toolbox.org/view.php?id=1320
Victor Poughon
________________________________________
De :[email protected] [[email protected]] de la part de
Jordi Inglada [[email protected]]
Envoyé : mercredi 4 janvier 2017 16:09
À : otb-users
Objet : [otb-users] Quicklook application introduces a shift
Hi,
I am not sure this should be considered a bug, but here it goes :
I am using the Quicklook application to sub-sample a Sentinel-2 image
from 10 m to 30 m resolution in order to stack it over a Landsat-8
image. Both images have been ortho-rectified to the same projection
beforehand.
Having a look at the images in Monteverdi, I have found that there is a
shift of about 15 m in both X and Y (half a pixel) between the original
S2 image and the quicklook.
I remember the "origingate" controversy from some years ago when it was
discovered that ITK and gdal did not follow the same convention for the
image origin. I understand that this issue was solved. Therefore, I
don't understand what is happening here.
I have used the RigidTransformResample application instead of the
Quicklook and the shift is not present.
Thank you.
Jordi
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<www.c-s.fr> *Guillaume PASERO*
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