Ciao Simone, No problem, the imagery (source) is open data from the Dutch OpenTopo project: http://opentopo.nl. Some GeoTIFFs at [1]:
The original TIFFs are generated from a QGIS project by the author JW van Aalst, and available for download, e.g. here [2]: I use GDAL recipes [3]+worldfiles [4] to generate GeoTIFFs like [1]. This script [3] transforms a source dir with original tiffs to a destination dir. There may be something there that gives some issue, like extracting just 3 bands? This encoding gave good results on GeoServer 2.4.3, blurred after 2.6.1 upgrade, and ok again in 2.6.2 only after setting ENABLE_ADVANCED_PROJECTION=false. The resulting tiff-dir gets added as an ImageMosaic source in GS. So easiest is to use these result-TIFFs [1]. Once we are sure that the encoding is "right" we will use these as a more compressed and better geotagged download format as well. Just noticed the Paul Ramsey blog on GeoTIFF compression [5]. Best, Just Links: [1] http://data.nlextract.nl/opentopo/800pixkm/tif/2014-R11-test/ [2] http://data.nlextract.nl/opentopo/800pixkm/tif/2014-R11 [3] https://github.com/opengeogroep/NLExtract/blob/master/opentopo/bin/topotrans.sh [4] https://github.com/opengeogroep/NLExtract/tree/master/opentopo/worldfiles [5] http://blog.cleverelephant.ca/2015/02/geotiff-compression-for-dummies.html On 19-02-15 17:16, Simone Giannecchini wrote: > 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 > == > 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 > 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 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 > 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 the information in this message > that has been received in error. The sender does not give any warranty > or accept liability as the content, accuracy or completeness of sent > messages and accepts no responsibility for changes made after they > were sent or for other risks which arise as a result of e-mail > transmission, viruses, etc. > > > On Thu, Feb 19, 2015 at 5:14 PM, Simone Giannecchini > <[email protected]> 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 >> 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 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 >> 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 the information in this message >> that has been received in error. The sender does not give any warranty >> or accept liability as the content, accuracy or completeness of sent >> messages and accepts no responsibility for changes made after they >> were sent or for other risks which arise as a result of e-mail >> transmission, viruses, etc. >> >> >> On Thu, Feb 19, 2015 at 11:53 AM, Just van den Broecke >> <[email protected]> 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 >>>> <[email protected] <mailto:[email protected]>> 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> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >>>> from Actuate! Instantly Supercharge Your Business Reports and >>>> Dashboards >>>> with Interactivity, Sharing, Native Excel Exports, App Integration & >>>> more >>>> Get technology previously reserved for billion-dollar corporations, >>>> FREE >>>> >>>> http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk >>>> _______________________________________________ >>>> Geoserver-users mailing list >>>> [email protected] >>>> <mailto:[email protected]> >>>> https://lists.sourceforge.net/lists/listinfo/geoserver-users >>>> >>>> >>>> >>>> >>>> -- >>>> == >>>> GeoServer Professional Services from the experts! Visit >>>> http://goo.gl/NWWaa2 for more information. >>>> == >>>> >>>> Ing. Andrea Aime >>>> @geowolf >>>> Technical Lead >>>> >>>> GeoSolutions S.A.S. >>>> Via Poggio alle Viti 1187 >>>> 55054 Massarosa (LU) >>>> Italy >>>> phone: +39 0584 962313 >>>> fax: +39 0584 1660272 >>>> mob: +39 339 8844549 >>>> >>>> http://www.geo-solutions.it >>>> http://twitter.com/geosolutions_it >>>> >>>> *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 >>>> 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 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 >>>> the information in this message that has been received in error. The >>>> sender does not give any warranty or accept liability as the content, >>>> accuracy or completeness of sent messages and accepts no responsibility >>>> for changes made after they were sent or for other risks which arise as >>>> a result of e-mail transmission, viruses, etc. >>>> >>>> >>>> ------------------------------------------------------- >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards >>> with Interactivity, Sharing, Native Excel Exports, App Integration & more >>> Get technology previously reserved for billion-dollar corporations, FREE >>> http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk >>> _______________________________________________ >>> Geoserver-users mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/geoserver-users > -- kind regards / met vriendelijke groet, --Just Just van den Broecke [email protected] Just Objects B.V. tel +31 65 4268627 Skype: justb4 The Netherlands http://www.justobjects.nl ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk _______________________________________________ Geoserver-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
