Ciao Just,
more thoughts, in case we needed it, would you be able to share some
sample data to replicate the issue?
Regards,
Simone Giannecchini
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@simogeo
Founder/Director
GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
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On Thu, Feb 19, 2015 at 5:14 PM, Simone Giannecchini
<simone.giannecchini@anonymised.com> wrote:
Ciao Just,
my experience says that in most cases Bicubic is simply slower than bilinear.
Regards,
Simone Giannecchini
GeoServer Professional Services from the experts! Visit
http://goo.gl/NWWaa2 for more information.
Ing. Simone Giannecchini
@simogeo
Founder/Director
GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 333 8128928
http://www.geo-solutions.it
http://twitter.com/geosolutions_it
-------------------------------------------------------
AVVERTENZE AI SENSI DEL D.Lgs. 196/2003
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nel/i file/s allegato/i sono da considerarsi strettamente riservate.
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distruzione del messaggio stesso, cancellandolo dal Vostro sistema.
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diverse, costituisce comportamento contrario ai principi dettati dal
D.Lgs. 196/2003.
The information in this message and/or attachments, is intended solely
for the attention and use of the named addressee(s) and may be
confidential or proprietary in nature or covered by the provisions of
privacy act (Legislative Decree June, 30 2003, no.196 - Italy's New
Data Protection Code).Any use not in accord with its purpose, any
disclosure, reproduction, copying, distribution, or either
dissemination, either whole or partial, is strictly forbidden except
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On Thu, Feb 19, 2015 at 11:53 AM, Just van den Broecke
<just@anonymised.com> wrote:
Hi Andrea,
Thanks. Yes I have Bilinear interpolation on. Nearest N. gave far worse
results. Hard to see a difference with Bicubic. Also before
ENABLE_ADVANCED_PROJECTION=false Bilinear gave the best results.
Best,
Just
On 19-02-15 08:50, Andrea Aime wrote:
Hi Just,
you do have bilinear interpolation on, yes?
The issue is known, we are working on a solution, here:
https://github.com/aaime/geotools/commits/warp_affine_aph
Still need to perform some checks before we merge it. The gist of it is
that currently in order to handle
difficult projections we are doing first a reprojection and then a
rescale to the desired target resolution,
which with bilinear interpolation result in a double resampling, the
patch modifies the code paths
so that we can leverage the "warp/affine" reduction, that is, a code
path that notices a reprojection
and and affine need to be performed in sequence, and merges the two in a
single operation, thus
getting us a single bilinear resample
Cheers
Andrea
On Wed, Feb 18, 2015 at 11:07 PM, Just van den Broecke
<just@anonymised.com <mailto:just@anonymised.com>> wrote:
Hi,
First of all, I appreciate the hard work you folks, in particular at
GeoSolutions, are doing, already for many years, on raster.
I noticed when upgrading from 2.4.3 to 2.6.1 that reprojected raster
images from an Image Mosaic GeoTIFF source became less sharp. I
tried many raster settings but to no avail. I noticed that in 2.6.2
"Advanced Raster Projection" could be switched off. Via the
Java-code it appeared that this can be effected by setting
ENABLE_ADVANCED_PROJECTION=__false in e.g. the Tomcat environment
settings. After upgrading to 2.6.2 and adding that setting, this
immediately gave better/sharper results. See attached image for the
differences before/after the setting. The original imagery is in
EPSG:28992 and the reprojected/warped in EPSG:900913. There are no
problems in rendering in the original projection, only when
reprojecting/warping.
I am not sure why the above worked for me, but I thought I share
this. Maybe it helps in further development. I can give more context
if needed.
Best,
--Just
Just van den Broecke
www.justobjects.nl <http://www.justobjects.nl>
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*AVVERTENZE AI SENSI DEL D.Lgs. 196/2003*
Le informazioni contenute in questo messaggio di posta elettronica e/o
nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il
loro utilizzo è consentito esclusivamente al destinatario del messaggio,
per le finalità indicate nel messaggio stesso. Qualora riceviate questo
messaggio senza esserne il destinatario, Vi preghiamo cortesemente di
darcene notizia via e-mail e di procedere alla distruzione del messaggio
stesso, cancellandolo dal Vostro sistema. Conservare il messaggio
stesso, divulgarlo anche in parte, distribuirlo ad altri soggetti,
copiarlo, od utilizzarlo per finalità diverse, costituisce comportamento
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The information in this message and/or attachments, is intended solely
for the attention and use of the named addressee(s) and may be
confidential or proprietary in nature or covered by the provisions of
privacy act (Legislative Decree June, 30 2003, no.196 - Italy's New Data
Protection Code).Any use not in accord with its purpose, any disclosure,
reproduction, copying, distribution, or either dissemination, either
whole or partial, is strictly forbidden except previous formal approval
of the named addressee(s). If you are not the intended recipient, please
contact immediately the sender by telephone, fax or e-mail and delete
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sender does not give any warranty or accept liability as the content,
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for changes made after they were sent or for other risks which arise as
a result of e-mail transmission, viruses, etc.
-------------------------------------------------------
------------------------------------------------------------------------------
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