Ciao Andrea, you are perfectly right, I did not think about this use case. We can do this, I can resurrect my tests again, but if we then want to make the quantization algorithm pluggable, I'd need your help for the integration. Do we have a deal?
Simone. ------------------------------------------------------- Eng. Simone Giannecchini GeoSolutions S.A.S. Owner - Software Engineer Via Carignoni 51 55041 Camaiore (LU) Italy phone: +39 0584983027 fax: +39 0584983027 mob: +39 333 8128928 http://www.geo-solutions.it http://simboss.blogspot.com/ http://www.linkedin.com/in/simonegiannecchini ------------------------------------------------------- On Fri, Nov 14, 2008 at 10:16 AM, Andrea Aime <[EMAIL PROTECTED]> wrote: > Simone Giannecchini ha scritto: >> been there than that :-) >> >> The algorithm we use is a (super) optimized version of the octtree >> algorithm. Notice this sentence in the documents pointed out in the >> blog post: >> "The quantizer is fairly slow compared to median cut or octree methods". >> NeuQuant gives good quality but if you want to use it in place like we >> do (the guy is doing offline preprocessing) ou'd give up a lot in >> terms of speed. >> >> I should still have around the speed tests I had made with the various >> algorithms, I could put them somewhere (I have a blog as well! :-) ). >> Anyway, there are others novel algorithms that we could try and >> implement but I wonder if ATM it is worth the effort, I think there >> are many other things that we could optimize with a similar effort. >> Mmmmmmhhh, probably topic for an intern. > > I agree that for the use case of online data serving having a slow > encoder is not the best option. Yet, for a tile cached set, provided > you have enough processing power to handle either the pre-seeding > or the on line tile generation, it makes sense to offset lower > performance for good quality, as the cost of producing the > tiles becomes a one time only one. > > Cheers > Andrea > > -- > Andrea Aime > OpenGeo - http://opengeo.org > Expert service straight from the developers. > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Geoserver-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/geoserver-devel > ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Geoserver-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-devel
