Hi Daniele Thank you for answering. While reading my first message I realized it was incomplete. Individual layer rendering is quite good, but when I compose the layers in the aggregate they don't look interpolated
This is a snap of the 8 level layer, it is using bilinear interp. Output is quite good at level 8 in TMS: https://ibb.co/10hgtFB At level 7 the interpolation is not so good, some tiles are blurry. Maybe I will switch to bicubic, but it is acceptable https://ibb.co/2YyGkZc Now with the aggregate at level 8 and 7: https://ibb.co/WBX4xxK https://ibb.co/jhWzVLQ Is it possible to enable interpolation as the aggregate as well? To generate the overview I've adapted the script of the tutorial to increas the JPEG quality but I've kept the other parameters. I'm not sure it tiling is useful because for this dataset mosaic granules have a 500x500 dimension for %%F in (*.tif) do ( echo Processing file %%F REM translate echo Performing gdal_translate on file %%F to file %%~nF.tiff gdal_translate -b 1 -b 2 -b 3 -mask 4 -co "TILED=YES" -co "BLOCKXSIZE=512" -co "BLOCKYSIZE=512" -co "COMPRESS=JPEG" -co "PHOTOMETRIC=YCBCR" -co "jpeg_quality=100" --config GDAL_TIFF_INTERNAL_MASK YES %%F %outputdir%\%%~nF.tiff REM add overviews echo Adding overviews on file %%~nF.tiff gdaladdo -r average --config COMPRESS_OVERVIEW JPEG --config PHOTOMETRIC_OVERVIEW YCBCR --config JPEG_QUALITY_OVERVIEW 100 %outputdir%\%%~nF.tiff 2 4 8 16 32 ) Best Regards, Nicolas Le mar. 16 mars 2021 à 09:19, Daniele Romagnoli < [email protected]> a écrit : > Hi Nicolas, > > On Mon, Mar 15, 2021 at 7:57 PM Nicolas Raggueneau < > [email protected]> wrote: > >> Hi All, >> >> France Geographical Institute (IGN) is distributing some of its data >> with an Open Licence here: >> https://geoservices.ign.fr/documentation/diffusion/telechargement-donnees-libres.html#plan-ign >> In particular there is a pack with zoom levels 8-12. >> I've loaded them in Geoserver, each level in its own ImageMosaic >> store/layer, and I've created an aggregate with all the layers and SLD >> sheet to switch from one layer to another in the TMS. >> I've added tile blocks, overviews and masks according to geosolutions' >> tutorial (awesome) >> >> Problem is the output is not very good looking, in particular the place >> names are not very readable. >> > > Can you share a couple of images showing the rendered output? > > >> So here are the two options that we have in mind to improve the rendering >> but so far it's not very effective: >> - Increase tile dimensions to 1024x1024 - problem is that it messes with >> the gridset tile footprint without much improvement on quality >> - enable interpolation on layers - no visible improvement >> - adding overviews - no visible improvement >> >> > Which resampling are you using to generate overviews? > > Regards, > Daniele > > >> Is there any other option? With the same tile size if i use mapnik >> rendered tiles i don't have this issue so there may be another way... >> >> regards, >> >> Nicolas >> >> >> >> >> _______________________________________________ >> Geoserver-users mailing list >> >> Please make sure you read the following two resources before posting to >> this list: >> - Earning your support instead of buying it, but Ian Turton: >> http://www.ianturton.com/talks/foss4g.html#/ >> - The GeoServer user list posting guidelines: >> http://geoserver.org/comm/userlist-guidelines.html >> >> If you want to request a feature or an improvement, also see this: >> https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer >> >> >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/geoserver-users >> > > > -- > Regards, > Daniele Romagnoli > == > GeoServer Professional Services from the experts! Visit > http://goo.gl/it488V for more information. > == > > Ing. Daniele Romagnoli > Senior Software Engineer > > GeoSolutions S.A.S. > Via di Montramito 3/A > 55054 Massarosa (LU) > Italy > phone: +39 0584 962313 > fax: +39 0584 1660272 > > http://www.geo-solutions.it > http://twitter.com/geosolutions_it > > ------------------------------------------------------- > > Con riferimento alla normativa sul trattamento dei dati personali (Reg. UE > 2016/679 - Regolamento generale sulla protezione dei dati “GDPR”), si > precisa che ogni circostanza inerente alla presente email (il suo > contenuto, gli eventuali allegati, etc.) è un dato la cui conoscenza è > riservata al/i solo/i destinatario/i indicati dallo scrivente. Se il > messaggio Le è giunto per errore, è tenuta/o a cancellarlo, ogni altra > operazione è illecita. Le sarei comunque grato se potesse darmene notizia. > > This email is intended only for the person or entity to which it is > addressed and may contain information that is privileged, confidential or > otherwise protected from disclosure. We remind that - as provided by > European Regulation 2016/679 “GDPR” - copying, dissemination or use of this > e-mail or the information herein by anyone other than the intended > recipient is prohibited. If you have received this email by mistake, please > notify us immediately by telephone or e-mail. >
_______________________________________________ Geoserver-users mailing list Please make sure you read the following two resources before posting to this list: - Earning your support instead of buying it, but Ian Turton: http://www.ianturton.com/talks/foss4g.html#/ - The GeoServer user list posting guidelines: http://geoserver.org/comm/userlist-guidelines.html If you want to request a feature or an improvement, also see this: https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
