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 ------------------------------------------------------------------------------ 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
